APRELIMINARY TECHNOLOGY ASSESSMENTQF .. LARGE FAR-M TRACTORS AND COM-BlNES i , J * Dissefiation for théyDeg‘ree ofPth, I: MICHIGAN STATE UNIVERSITY FRANCIS KENT WALTON 1977 ’ ' .yrzlf; Llnnfl n'n \ Mich} Universrty This is to certify that the thesis entitled A Preliminary Technology Assessment of Large Farm Tractors and Combines presented by Francis Kent Walton has been accepted towards fulfillment of the requirements for Ph. D . degree in _Agr_i_cu_l_tural Mechanization Science L Major professor / Date April 20, l977 07 639 Ill/sillll/II/l’llllllllll'lflllllll/I/Il/lll/l ABSTRACT A PRELIMINARY TECHNOLOGY ASSESSMENT OF LARGE FARM TRAC?ORS AND COMBINES by Francis Kent Walton Present governmentally influenced economic policies and conditions make the purchase of large machines attrac- tive on an individual enterprise basis: however. when considered from an overall societal standpoint. many secondary and higher-order consequences must be evaluated to determine if society has actually benefited from increased size of farm machines. Externality costs may exceed by many times the total economic benefit derived from the technology modification of the current high-horse- power farm tractor and combine. In the research study, externality costs became manifest in farm structural changes which were measured by levels of structural differentiation for each of the five farm structural characteristics investigated. High levels of farm structural differentiation have been shown. by sociologists and economists. to be socially and economically undesirable for society. Farm structural data associated with large tractors and combines were obtained from computer records of the Michigan State University CoOperative Extension Service's Francis Kent Walton TelFarm record service and an investigation was completed of selected structural changes associated with the technol- ogy modification of the purchase of highest-cost tractors and combines. Farms which purchased highest-cost tractors decreased family labor participation and increased hired labor differentiation over twice the amount of the other farms in the study from 1974 to 1975. The increase in capital differentiation on highest-cost tractor purchase farms was twice that of all other farms over the same time period. Land and machinery differentiation increased significantly on the all-farms category; however. a decrease was found for highest—cost tractor purchase farms thus indicating a possible concentration in land ownership and a decreased need for leased machines or hired-machine work on those farms which purchased large tractors. The second part of the research study deve10ped the nucleus for a comprehensive technology assessment relating alternative agricultural technologies to major societal problems. Techniques of inquiry of problem-driven technology assessment led to controversial issues. Educa- tional aids and inquiry into professionalism.were additional subject areas where problem-oriented technology-assessment techniques could likely prove useful. Approved fiW Approved M M Jor Professor (57 De rtment Ch irman A PRELIMINARY TECHNOLOGY ASSESSMENT OF LARGE FARM TRACTORS AND COMBINES by Francis Kent walton A DISSERTATION Submitted to Michigan State University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Department of Agricultural Engineering 1977 © Copyright by FRANCIS KENT WALTON 1977 ABLE OF COE‘ITENTS INTRODUCTION . . . . . . . . . . . . . . . . Statement of the Societal Problem . . . . Statement of the Research Problem . . . . REVIEW OF LITERATURE . . . . . . . . . . . . Purpose of Technology Assessment . . . . . An aid to decision makers . . . . . . . Preliminary ASpects of Technology Assessment Technology Assessment Methodology . . . . Related Studies which Used Technology Assessment Methodology . . . . . . . Statement of the Current Status of the Art Conceptualizations and Definitions . . . . Farms . . . . . . . . . . . . . . . . . Family farms . . . . . . . . . . . . . . Other farm types . . . . . . . . . . . . Structure and structural differentiation TeChnOIOgy seleCtion e e o e e o e e e 0 ii PAGE (n -q x: «a Kn A» 10 la 24 26 26 27 30 32 37 PAGE PRELIMINARY TECHNOLOGY ASSESSMENT . . . . . . . . . 46 Methodologies Followed in Research . . . . . . . . 46 Technology-Driven Assessment . . . . . . . . . . . 49 Research procedure . . . . . . . . . . . . . . . “9 Technology and structural methodology . . . . . 57 Computer-aided selection of farm structural characteristics . . . . . . . . 60 Results of investigation . . . . . . . . . . . . 66 Results and discussion . . . . . . . . . . . . . 57 Preliminary Problem-Driven Assessment . . . . . . 97 Research procedure 0 o e e e e e e e o e e e e e 97 Preliminary results of investigation. societal problems . . . . . . . . . . . . . 99 Discussion of preliminary results . . . . . . . 11h Technology assessment as an educational aid . . 115 Technology assessment as an inquiry into professionalism . . . . . . . . . . . 118 SUMMARY 0 o e e o o o o e e o e e e o e e e o e e o 121 CONCLUSIONS 0 e o e e e e e e e e o e e o e o o e e 127 SUGGESTIONS FOR FUTURE RESEARCH . . . . . . . . . . 130 REFERENCES 0 o o o e o e o e o o e e o e o e e e e e 132 iii LIST OF TABLES TABLE PAGE I. FAMILY LABOR PARTICIPATION RATIOS . . . . . . 69 II. HIRED LABOR DIFFERENTIATION RATIOS . . . . . 72 III. CAPITAL DIFFERENTIATION RATIOS . . . . . . . 75 IV. LAND DIFFERENTIATION RATIOS . . . . . . . . . ~78 V. NACRINERI DIFFERENTIATION RATIOS . . . . . . 82 VI. TOTAL TILLARLE ACRES FARMED . . . . . . . . . 85 VII. HIGHEST-COST TRACTOR PURCHASES . . . . . . . 86 VIII. FARM STRUCTURAL DIFFERENTIATION RATIOS . . . 122 IX. FARM STRUCTURAL CHANGE . . . . . . . . . . . 123 iv LIST OF FIGURES FIGURE PAGE 1. FAMILY LABOR PARTICIPATION, 1968-1975. ON ALL FARMS. CROP FARMS. AND BIG TRACTOR PURCHASEFARMSO00000000000000. 7O 2. HIRED LABOR DIFFERENTIATION, 1968-19759 ON ALL FARMS, CROP FARMS, AND BIG TRACTOR PURCIi-ASE FARMS O O O O O O O O O O O O O O O O 73 3. CAPITAL DIFFERENTIATION. 1968-1975. ON ALL FARMS. CROP FARMS AND BIG TRACTOR PURCHASE FARMS . . . . . . . . . . . . . . . . 76 u. LAND DIFFERENTIATION. 1968-1975. ON ALL FARMS AND CROP FARMS AND BIG TRACTOR. PURCPAASE FA—RMS O O O I O C 0 O O O O O o O O O 79 5. MACHINERY DIFFERENTIATION, 1968-1975. ON ALL FARMS AND CROP FARMS AND BIG TRACTOR PURCHASE FARMS o o I o o o o o o o o o o o o c 83 .(\ -7. I Ce 0 (I. by 3 k “In. +U 1 PG ”U +.U CV had INTRODUCTION Within the last century, the technology of mechanical power has revolutionized agricultural food production in the United States. Petroleum products coupled with innovations in metallurgy in conjunction with automotive assembly-line techniques created an agribusiness industrial complex unsurpassed in labor-efficient primary food produc- tion. The change from the vast surplus of land with a scarcity of labor during the 1800's to the present adequacy of land with high rates of unemployment. illus- trates the need for evaluation of the labor-resource supply in relation to the appropriate application of technology for farm production. The technological change from animal draft power to mechanical power. derived from cheap fossil fuels, was accentuated only slightly by the wars and slowed only temporarily by the depression of the thirties. Few would argue that the agricultural technological transition from draft power to fossil fuel power was detrimental to the evolving industrializing society up to 1950: however. the adaption of labor-efficient technologies has not been without a large number of associated externality costs. Since 1950 there has been no significant technological 1 c} C! 131:1 «him 0).. change in mobile farm power sources of the farm tractor and combine, but there has been a twenty-fold increase in the availability of technological modification through increased tractor size. The availability and utilization of large-scale tractors and combines may be of much greater total cost to society as a whole than the economic benefits derived by a select few. Buchele (1975) emphasized that the primary reason for the utilization of high levels of technology was the reward of individual economic gain. Buchele further pointed out that individual gains from the use of the technology have been shown to rapidly diminish as the majority of possible users acquire use of the technology. The economic gain of the early adopter was then lost, but the technology remained. The possibility of returning to a previous intermediate level of technology was financially nonviable and the externality costs remained. With the decline in the number of workers involved in direct farm production of food and fiber. there has been an associated increase in the capital requirements necessary for viable commercial agricultural production units. Gulley (197a) considered large capital requirements to be among causal factors which created structural changes that required large measures of agricultural adjustment for those individuals involved with agricultural production. In addition to Gulley, Harris (1974) indicated that traditional family-farm functions have been. in many reSpects. absorbed by agribusiness in varying degrees depending upon type of enterprise and location. Recent vertical integration in the southern poultry industry illustrates structural change from low to high levels of differentiation. Such differentiation has been researched by sociologists such as Rodefeld (1975). Stockdale (1976). and Goldschmidt (1972). The sociologists found Specific farm structure with high levels of structural differentiation to be detrimental to the social institutions of society. The economist. Heady (1975). illustrated the economic decline of rural areas associated with large increases in farm size. Statement of the Societal Problem For various reasons. Specific individuals and clientele groups in the United States value or desire commercial agricultural production farm structure to be similar to one of the following: traditional family farm. current family farm. larger-than-family farm. other-than- family farm. or agribusiness-factory farm. Such farms differ significantly in farm structure. thereby providing a widely varying environment for the individuals associated with each farm structure. and imparting distinctive character- istics upon the communities in which they are located. It is known that technology change and modification have played a key role in the creation of distinctive farm structure. Yet the exact impact imposed upon farm structure (n by the technology modification of the large tractor and combine is not known. The change from draft horses to total tractorization was a giant shift for agricultural production in the United States. Technology modification in the size of the farm tractor and combine has likely created an even greater change in the structure of farms in the United States than the shift from horses to tractors. The transition from a large hitch of horses to a two-bottom size tractor likely had only a small effect on farm structure compared with the modification from a two-plow tractor to a tractor capable of pulling more than twenty plows. The available technologies for agricultural produc- tion are becoming increasingly capital intensive. Power units required to maintain viable agricultural production enterprises are being manufactured and placed into service in ever-increasing size. The economic viability of purchasing larger machines under present economic policies and conditions makes such purchases financially attractive on an individual enterprise basis. When viewed from an overall societal standpoint. in place of the individual standpoint. many secondary and higher-order consequences of the increasing size of agricultural production technology must be evaluated in order to determine to what extent society has benefited from increased machine size. Externalities or shadow costs may exceed manyfold the initial purchase price of the largest machines. Some r 3‘. (D 1 '1 ‘c kg 4- "va secondary costs can be evaluated by economic measures. Other secondary costs to individuals and to society such as losses of components of Freedom. Justice. Environment. and Quality of Life are not measurable by standard Specific economic measures: however. they may be systematically identified. evaluated. and estimated. The problem then. at the societal level. is to determine which technologies and technology modifications best serve the needs of society when all costs and benefits are considered. Statement of the Research Problem The first part of the research problem consisted of the need for information regarding the relationship between increased size of farm machines and sociologically relevant farm structural changes. The research approach used in the technology-driven part of the study was to investigate the impacts of the technology modification of size of tractor and combine purchases upon the sociologically relevant farm structural characteristics of family-labor participation. hired-labor differentiation. capital differentiation. land differentiation. and machinery differentiation. The second part of the study utilized technology assessment which was defined by Coates (1975) as ”the systematic study of the effects upon society that may CO‘. dri inc occur when a technology is introduced. extended. or modified with emphasis on the impacts that are unintended. indirect and delayed." The establishment of an analytical framework for a comprehensive technology assessment related to agri- cultural technologies and societal problems was the second part of the research problem. Agricultural technologies. societal problems. clientele groups. and references which could be used as the initiation of a comprehensive problem- driven technology assessment were elements selected for inclusion in the research study. deve Q. 07! t h 39 m .11 k. REVIEW OF LITERATURE Purpose of Technology Assessment An aid to decision makers Technology assessment was develOped as an aid to decision makers at the congressional level by Congressman Daddario in 1966. Government funding and interest continued the political orientation of technology assessment until a wider array of interest groups began utilizing the metho- dology for different types of investigations with the results being used to educate a Spectrum of decision makers. The George Washington University assessment group headed by Coates (1975) carried significant impact on the early development of technology-assessment methodology. The technology-assessment process was not to make decisions. but to illuminate and expand associated information so the decision makers could make a decision based on as much accurate information as possible. Secondary consequences and externalities were the major considerations of technology assessments. and stress was placed upon the fact that information was to be made freely available to decision makers and interested members of the public. In accordance with the definitional nature 7 of technology assessment. this research study gave little attention to the primary economic considerations associated with the technologies in question. Preliminary Aspects of Technology Assessment Black (1975) wrote. "Orientation to the future is the major attribute distinguishing technology assessment from research. Technology assessment entails development of hypotheses or statements of prospective future conditions arising from new technology. which could be considered a stage of research. but it does not allow for completion of the research process by testing the validity of such statements of hypotheses which have to be considered plausible possibilities. not certainties or even prob- abilities. Policy decisions necessarily reflect a subjec- tive or Judgmental weighting of the set of hypotheses. or possible consequences of new technology. To have this much illumination of the future is better than no analysis of future consequences of technology. or an analysis restricted to the intended beneficial effects.” Black later wrote. ”All technology assessments. however sophisticated and detailed. must remain “preliminary.” Knowledge of complex social processes and interactions. eSpecially of the future. will forever remain incomplete." In Justification for technology assessment. he also wrote. "These estimates are based upon scanty and inadequate data. and must be cc: 2101 ll] of considered rough approximations at this time. but they do not need to be highly accurate for the purpose of illuminating potentially significant long-run consequences.” Back (1975). in referring to the technology assessment of minimum tillage wrote. ”This study was undertaken by the Office of Planning and Evaluation as a part of a continuing effort to provide better information for USDA policy officials on significant agricultural and related issues of national importance.“ Back further wrote. "Knowledge of the past is not useful to policy officials unless it provides foresight of (l) likely future consequences of continuing technological advance. and (2) Opportunities to influence the nature. magnitude and direction of future technology. Analysis intended to give a future perspective to policy officials on technology-related decision options and consequences is a part of a recently emerging type of policy analysis called technology assessment." ”The purpose of technology assessment is to assist in the management of technological processes including research and development as well as technology transfer and application. not to hamper these processes.” Mayo (l975)wrote. ”The purpose of technology assessment is to clarify policy and project options in terms of their full social implications in order that intelligent choices can be made by responsible public and private-sector decision makers." Black (1975). in describing technology assessment wrote, "The function of technology assessment 8: wk! m A \ U iol: 10 is not advocacy. but to give decision makers a larger and better hand from which they can select their trump card." Coates. according to Chen and Zissis (1975). also emphasized the preliminary nature of technology assessment when she wrote. ”after the initial effort. a monitoring and surveillance program must be set up to update and implement the results of technology assessment on a continuing basis." Technology Assessment Methodology Some practitioners of technology assessment have made statements which relate only to a specific type of metho- dology and would tend. upon interpretation. to be in conflict with an alternative methodology. Black (1975) wrote. ”Technology assessment must not attempt impossible precision." Yet Finsterbusch (1975) includes technical feasibility. economic feasibility. and profitability as segments in his complex methodological assessment procedure. Several of Finsterbusch's assessment components did not appear consistent with the definitional characteristics of the secondary effects of technology assessment as defined by Coates which was previously quoted in this paper. Determination as to whether a Specific rigorous assessment technique or a generalized assessment methodology would be appropriate for a given assessment would be influenced by factors such as the type of problem to be addressed, the Special interests of clientele groups. and the personal ch: in; ll characteristics of the decision makers. Chen and Zissis (1975) characterized the most important part of technology assessment as "policy-and- action-oriented. The results of technology assessment are expected to change or influence policy decisions.” ”The effort of technology assessment in the near future should be focused on those technologies which are likely to exert very significant impacts on society and which are in a sufficiently early stage of development still subject to effective control." Chen and Zissis divided the technology assessment methods into those which were "technology-drivenf and those which were ”problem-driven” as previously used by the Committee on Public Engineering Policy of the national Academy of Engineering and presented to the U.S. House of Representatives in 1969. In further describing technology assessment methodology. Chen wrote. "technology assessment is policyband-action- oriented. This makes technology assessment itself more a technology than a science, with all the implications of the difference between science and technology. The conclusions of recent methodological studies are similar and congruent in terms of the general steps taken and the general considerations to be included. However. the specific methods for determining the unintended. indirect. and delayed social effects of a given technology are diverse. unrigorous and judgmental." Tracing methods were described by Chen as a chain of 12 events or identified impacts. Each impact was made eXplicit. Tracing methods included the impact-tree method of ’ assessment in which each branch represents a course of events or an alternative for policy decisions. Such a method may be considered a technology-driven method of assessment. Chen described scanning methods as having possible components of: apparently enormous impacts. major societal problems. major social values. disciplinary aspects. and checklists. Such components were characteristic of problem- driven assessment. In describing one methodology for technology assess- ment. Mayo (1975) listed the following steps: Step 1 - ngine the Assessment Task Establish scope (breadth and depth) of inquiry Develop project ground rules Step 2 Describe Relevant Technologies Describe major technology being assessed Describe technologies competitive to the major and supporting technologies Step 3 Develop State-of-Society Assumptions Identify and describe major factors influenc- ing the application of the relevant technologies Step # - Identify Impact Areas Step 5 - Make Preliminary Impact Analysis Step 6 - Identify Possible Action thions 13 Step 7 - complete Impact Analysis Analyze the degree to which each action option would alter the specific societal impacts of the assessed technology discussed in Step 5 Black (1975) wrote. “it has often been observed that there are linkages between many current social problems and the rapidly advancing agricultural technology of the past three decades.“ This statement gave a direct aware- ness of the relationship between social problems and agricultural technology. Many studies such as cargill (1972) and Hightower (1973) have shown the labor or work diaplacement aspects of technology. Nest such technology- labor substitution aspects were of first-order consequences and were the desired goal of the technology implementation. Such labor-substitution studies are not material for inclusion as principal components of technology assessment until such components are or become second or higher-order consequences. Problem-driven assessments which were initiated from a list of commonly accepted societal problems were described by Chen and Zissis (1975). The technology or alternative technologies were then evaluated to find whether the societal problem was alleviated or aggravated because of the technology or technologies in question. various schemes such as that described by Montgomery (1975) have been used to quantify the desirability of the various technologies with respect to goal variables. 14 Montgomery and the Michigan State University Group for the Analysis and Assessment of Technology develOped the components of provision of physical necessities (P). environment (E). freedom (F). and justice (J) as all- encompassing components for technology assessment. In making the quality of life concept operational. the compo- nents were placed in a matrix array or cross-tabulation table against technological alternatives. An estimated value judgment ranging from +2 to -2 for each matrix Space was then determined. The rows or columns were then summed for the various technologies and an aggregate value obtained for each. It was the opinion of the author that in the United States. the commercial agriculture production sector of the economy has maintained a relatively steady condition during the past two decades and that the provision of physical necessities. (P). with respect to food and fiber through agricultural production in the United States. has not been a major issue. Therefore. with the provision component (P) satisfactorily fulfilled from the agricultural sector. components of environment (E). freedom (F). and justice (J) were emphasized for the latter part of the research study. Related Studies Which Used Technology Assessment Methodology Back (1975). along with others in the Office of Planning and Evaluation of USDA. published Minimum Tillage: A C17 15 Preliminary Technology Assessment. in September. 1975. This was one of the first technology assessments dealing specifically with a technology within the area of agriculture mechanization and will be reviewed in methodological detail. Back prefaced the study with technology assessment definitions. A page of "highlights“ followed containing the following material. ”The purpose is to provide policy officials and program managers with information useful for managing the process of technological change in ways to enhance beneficial effects while avoiding potentially adverse effects." Projections were prepared through the year 2.000 and summarized as follows: annual harvested acreage up 20 million. crop production up 5 percent. labor savings of 350 thousand man years at an estimated value of $1.6 billion. energy savings of 850 million gallons of fuel or $275 million per year. increased use of chemicals with a cost of $300 million per year. soil losses reduced by 50 percent. environmental pollution from pesticides and herbicides may become a major social concern. and the impact on numbers and sizes of farms remains in doubt. More research is required to accelerate beneficial impacts or reduce adverse consequences. Beck's ”Introduction" provided a definition of the technology within a conceptual framework rather than specific typological farm practices. The technology under study was then related to the complementary technology of chemical weed control. 16 The previously stated conceptualization as to content was then listed as principal variables or “impacts" related to production increasing conditions (yield. multiple cropping. etc.): conservation and environmental quality: energy. machinery. labor requirements: and farm size. Implications for public policy and recommendations also followed in the report and were presented as follows: 1. The extent of the technology adoption was given. (Acres covered by the technology. 1963-1974). 2. Factors affecting the technological concept "Each farmer makes these kinds of production decisions on the basis of the agronomic and economic information available to him.” Market and price factors were assumed not to be major constraints. Yields and multicrops may increase due to the enhancement of timeliness and moisture considerations. Lower machinery and labor costs enhanced adoption. Conserva- tion tillage relates to the environmental factors. 3. Projected expansion of the technology to the year 2.010 was divided into levels of the technological concept and crop specific estimates. The adoption of the pure technology of zero tillage was compared to reduced tillage. Adoption curves were estimated. 4. Impacts: farm labor estimates for the year 2,000 were estimated at 2 percent of the national workforce. The impact of the technology in question on national labor is negligible. "However. reduced tillage may be a major contributor to further significant reductions in farm-labor re; pro 32H 5081 039! 5203 1? requirements." Feed grains. wheat. rye and soybeans produced with the new technology could save 200 thousand man years of labor by year 2.000 or a 7 percent reduction in labor. "Fer some farms. labor saved may encourage expansion in crop acreages and farm operations.” "Because most of the pre-harvest operations are performed by farm- Operator families rather than hired labor. a substantial amount of this saving could be diverted to increased leisure time of members of farm families.” In production costs. labor was valued at $3 per hour and minimum tillage saved 52-58 percent of preharvest labor. Machine costs were expected to decrease as the minimump A tillage technology was adopted over a long time span: however. immediate cost reductions were not expected. Concerning energy costs. future supplies of fuel were in question. With higher energy prices. farm costs and consumer prices for food could rise. Conservation tillage could save 50 percent of total production of energy requirements. By 1980 a 20 percent reduction in tillage could save #25 million gallons of fuel per year. Twice this much could be saved by the year 2.000. Pesticide use would increase 2 1b/acre by 2.000 and would be equivalent in energy requirements to an additional 0.6 gallon of fuel per acre. As to number and sizes of farms. Back wrote. ”available data are inadequate for fully assessing the impacts of further reductions in tillage on numbers and sizes of farms." 18 Soil losses due to erosion can be cut 50 percent by the adoption of the technology. Pesticide pollution of the environment would likely increase with the adoption of the technology. Back's summary was adequately covered in the preceding comments. Research implications which followed the summary included Specific technology research needs and monitoring requirements to follow the developing technology. Policy and Program Implications included the USDA'S promotion of the technology based upon conservation. environmental. and production impacts. The technology assessment was ended by a list of needed monitoring functions to make the assessment more useful in future years. Back's technology assessment was written within the institutional framework of the USDA and therefore did not deal with controversial issues. Most issues considered were of primary consequence rather than the investigation of second-order consequences which was the material consid- ered by most technology assessments. As an example. Back listed the savings of 350.000 man years at a value of $1.6 billion. He did not list the possible societal costs attached to that savings such as displacement. relocation. unemployment. and decline of community institutions. In considering relevancy. Guy Black (1975) wrote, "In short. technology assessment directed to mission- oriented agencies must be restricted to the scope of agency interest and responsibility: otherwise it loses relevance to that agency. But from a public point of view. assessment in 19 these terms is too narrow.” Cargill and Rossmiller (1970) recommended studies be undertaken of a technology-assessment-like nature. They recommended that “Studies be undertaken to develop appro- priate policies whereby the losers who are required to make substantial social and economic adjustments due to technological change can be compensated. out of the rewards flowing to the gainers from those changes.” They also recommended the development of a parallel system of social accounts in which measurements of the non-market costs and benefits of alternative programs and policies may be assessed. The following study which used methodology similar to technology assessment was included even though the words technology assessment were not used by the authors. Fridley and Holtman (1974) in Predicting the Socio-Eccnomic Implications of Mechanization by Systems Analysis used confidence levels to compute an expected value of system merit. A rating of from h to 10 was used. The value of 4 represented marginal acceptability and 10 represented high achievement of desired outputs. various technologies and clientele groups were selected. A realized output index was also introduced into the calculation as a measure of technology performance. Summation techniques were used to find composite desirability indexes. Fridley and Holtman concluded. ”Engineers are responsible for dramatic changes in our way of life. and agricultural engineers will 20 continue to have a very important impact on farmers. farm workers. and consumers of farm products. It is our responsibility to do all we can to ensure that our efforts provide the best possible overall benefits. This goal can be met best by a systematic effort at clearly defining the real need and identifying both the positive and negative aSpects of proposed changes." Gill (1971) in Economic Assessment of Soil Compaction wrote. ”This physical. compactible soil system. however. is not an isolated entity since it interacts with the social and economic components of the agricultural system. The importance of soil compaction as a physical phenomenon must be evaluated in relation to the complete system. and the cost of compaction must be established to provide a basis for national as well as individual decisions." ”Intuitively we may believe that compaction induced by mechanization may reduce crop yields. but that these reduced yields may be offset by more economical forms of cultural operations. As a result. viewing the practical system in terms of ”net" costs may provide a means of ”living with" an agricultural system which has an inherent controlled compacting capability.” Gill assumed a 1 percent loss in crop value due to compaction for freeze depths of over 25 cm and a 10 percent loss for depths of freeze less than 25 cm. With the previous assumptions. Gill estimated crop value loss at $1.18 billion annually for the 0.8. Gill also wrote. ”the economics of the agricultural 21 system appear to dictate the adoption of equipment that has a greater compaction potential rather than less.” Donaldson and McInerney (1973) examined unanticipated structural and societal changes which were due to the tractorization of sectors of India. They found enlarged land holdings: tenants had been eliminated. and there was no increase in production intensity. McMillan (19b9) found a .97 correlation between tractors per 100 farms and the average value of farm machinery and implements per farm in Oklahoma. McMillan determined the tractors per 100 farms to be a valid and reliable measure of farm mechanization. In the study. he found population decreases greatest in counties with the greatest number of tractors per 100 farms. 'From 1925 to 1945. McMillan found a 3 to h rural-farm-person decrease for each tractor added. Also for each tractor added there was a decrease of 0.5 farm. Bertrand (1951) found mechanization to be the Significant change factor in rural Louisiana. An increase in tractors was correlated with an increase in cropland per farm. a decrease in the number of farms. and a decrease in rural farm population. Bertrand and others (1956) researched mechanization and social consequences in the Southwestern United States. Finch (1951) related the United States economic. farm. and social structural problems associated with farm produc- tion to the advance of mechanization. Overproduction 22 through mechanization and subsidization were the factors which diSplaced many farm enterprises. Esmay (1973) considered the social costs of reduced employment to be a major consequence of most large-scale mechanization efforts in deve10ping countries. Appropriate or intermediate technology was considered the desirable alternative for a wide-based income distribution. The President of Yale. Griswold (l9h8). in Farming (and Democracy wrote. "meanwhile agricultural machinery and technology. applied on a constantly eXpanding scale. increased the productive capacity of agriculture. depressing prices and wages. creating a labor surplus. and accelerating the flight from the land." "These were the true causes of distress of agriculture.” Griswold went on to illustrate the total cost of food purchased by American consumers to be the price paid by the consumers plus that paid by the taxpayers in subvention of existing methods of producing it and the social institutions surrounding them. Culley (197“). in Beliefs and values in American Farming. described freedom by encapsulating it in terms of presocial freedom. He wrote. "The concept of freedom that has been a part of an agrarian view of agriculture is inadequate for farming in the present and future." "Freedom for the farmer in the latter part of the 20th century will not square with the concept of independence of the Agrarian Ideal." "The rugged individualist has been 23 given his due credit. but perhaps it is time to lay his weary bones to rest.” ”The type of structure desired for agriculture is one that is capable of achieving society's goals." "There will be fewer farmers in the traditional sense of the word: that is. owner-operators.” ”Of necessity. the farmer must increase his output in order to increase his income.” ”He is not able to improve his income appreciably but finds it necessary to expand his Operation simply to stay even.” Schwarzweller (1975) portrayed the changes which occurred in a German village due to tractorization. Schwarzweller indicated a high degree of over-mechanization had occurred in recent years in the German village which he studied. } Buchele (1975). in Social Costs of Large Machines/Farms. assessed a variety of societal problems such as unemployment costs and conservation. The temporary advantages. gained. by early adopters of technology. were discussed along with the long-term benefits gained by society. Limitation of farm size was considered as a control measure to counter the effects of technological change. Buchele develOped a concept of ”A new view of rural America” and described ”A plan for rural America" based on a long-range plan for U.S. agricultural conservation. 24 Statement of the Current Status of the Art Technology assessment is a relatively new area of study: the topic was placed in a position of national view in 1966 by Congressman Daddario in a report to the Subcom- mittee on Science. Research and Development. A.wide variety of methodology has developed from the detailed technology-specific outline listed by Finsterbusch (1975) to the broad conceptualization developed by the Michigan State University Group for the Analysis and Assessment of Technology as described by Montgomery (1975). Each methodology has its Specific advantages and limitations. Such advantages and limitations depend upon the objectives of the individual or individuals who are to carry out the assessment and the clientele groups who will be served by the assessment. Time and cost limitations may also enter into the methodology selected for the study. The previously considered definitional papers and related studies gave insight into the topics considered and methodologies used in this study. considerable time passed since studies were completed which related mechanization to various sociological consequences at the onset and after completion of tractorization in the United States. The technology-driven assessment part of this research was an inquiry into sociologically relevant components of farm structure as affected by the technological modification of the large farm tractor and combine. 25 Approximately thirty years has passed since the completion of tractorization. Although many sociological studies have been completed over this time period and it has been known that tractor and combine size has been increasing. no major attempts have been made to interrelate the technology modifications considered in this study with sociological components of farm structure and changes in farm structure which have been shown by Rodefeld (l97h). Goldsmith (1972). Ready (1975). and others to be sociologically relevant. The diversity of techniques and variety of approaches to problems used by practitioners in the field of technology assessment. illustrate the newness and diversity of the field of technology assessment. With the characteristic of technology assessment being investigative toward second and higher-order consequences of technology. the methodology was quite appropriate for studying sociologically-related variables. Reese (1973) in Candidates and Priorities for Technology .Assessment found. from a survey of Federal Executive Agency Professionals. mechanization of farming and the resultant displacement of people from the land to be considered as a candidate technology for assessment. Although several components of labor were considered in this research study. such components were evaluated from sociologically-related structural relationships rather than from an economic- displacement viewpoint. This research study was undertaken 26 from a broad holistic approach rather than from myopic. Special-interest considerations. Conceptualizations and Definitions m The explicit definition of farm types was of critical importance in understanding the various structural concepts presented by the different authors in previous studies. The general definition of a farm as a land-based unit producing food and fiber was a beginning point for many authors. This definition.gave little indication of any structural or classification-type information. and.most authors could agree thus far on the definition of a farm. Traditional legal definitions of land ownership were proprietary in the definitions of farms. Such definitions rapidly became incomplete as new land-use and ownership patterns developed. Such traditional definitions were considered only as they applied to Specific issues in this research study. As enumerated elsewhere in the study. the Agricultural Stabilization and Conservation Service (1973) set explicit land ownership and use categories in establishing equitable and generally acceptable just distributions of government funds toward land owners and tenants who maintained farm operations upon land owned by others. Such definitions ”were based upon parcel ownership or on farm operatorship. 27 This type of farm definition was based on ownership of the land resource. and there could have been as many farms as there were owner parcels. plus the additional category of farms as operational units which were operated by tenants upon land owned by individuals other than the tenant. The primary measurement used in classification was the physical dimension of size in acres. The Census of Agriculture adopted classifications foré farms based on acres operated, acres of land owned. acres of land rented. and legal status of corporations. As economic trends and political objectives changed. so changed the definition of a farm. As explained in detail by Rodefeld (1974). such definitions were inappropriate for the study of changes in structural differentiation. I Larson (l97fi) wrote. in Economic Class of Farm: and the Farm-Family welfare Myth. of the inadequacy of using size of farm business and other economic measures as indicators of farm and family well-being. Traditional definitions of a farm were covered in additional detail in the section which conceptualized farm structural differentiation. Family farms Much rhetoric. considerable popular writing. and some economic writing has been devoted to the idealization of the family-farm concept. Most authors agreed that there were elements beyond economic considerations associated with the concept of the family farm. The agreement that there were associated elements was as far as the authors agreed. am 28 Nikolitch (1972) contributed significantly over recent years toward adding elements of farm structure. both economic and elemental such as labor. into the definitions of farm types. Nikolitch defined the family farm as ”a primary agricultural business in which the operator is a risk-taking manager. who with his family does most of the farm.work and performs most of the managerial activities." The remaining farms which failed to meet the preceding conditions were then called ”other-than-family farms." Gulley (197“) in Beliefs and values in American Farming develOped historical perSpectives into definitional frameworks. Such definitional frameworks were.covered in detail elsewhere in the study. Nair (1969) traveled the world searching for common elements of farm characteristics and compiled the findings in the book entitled. The Lonely Furrow. Definitional elements were found throughout the writing. The invisible ladder. the national dream. farm indebtedness and the work ethic were considered with reSpect to technology and other related factors. Slack (1970) was one of the initiates in recent agribusiness farm-type definitional writing. In Defense Against Famine: The Role of the Fertilizer Industry. Slack wrote. ”In the early days of agriculture--the manure and ashes era--the cost of farming was not given much thought. There was little or no outlay of cash: the farmer grew his own seed. supplied his own fertilizer. and provided 29 motive power in the form of horses (or bullocks) and his own muscles. The farm was a family Operation. a self-contained enterprise.“ "In some areas Of the world this is still the rural way of life. but it is fast passing away. even in the less-developed countries. In the more advanced areas. much of the crop production is on large farms Operated on a ”food-factory" basis. Seed is bought from Specialty growers: tractors. combines. and other machines make it possible fpm one or two men to farm hundreds Of acres. and large amounts of fertilizer are bought and used to give high yields per acre.” Other agribusiness elements. particularly the machinery manufacturers. have entered writings and other media as definitional interpreters of what should be considered family farms. Henkes (1976) and Nelson (1975) illustrated the concepts desired by the machinery industry. Another agribusiness. the largest so-called “farm organization”. Farm Bureau. which claims to represent the largest block Of farmers. avoids using the words family farm for reasons described by Olson (1973). Olson showed that such a vast conglomerate as Farm Bureau could not justly represent the conflicting interests of the family farmer and agribusiness. Paarlberg (1974) defined the family farm as "one on 'which the majority Of the labor and decisionemaking are supplied by the farmer and his family.” Kyle (1973) wrote. “It is still going to be a long time. 25 to 50 years. before public corporations control much of our agriculture. but it 30 doesn't mean that commercial farms will be the "family farm” in the old sense of the word." Ottoson (1963) wrote. "The family farm still dominates the rural scene but the Old definitions are outmoded." From such statements it was evident that the definition was an evolving definition which required more than the two words "family farm" to convey a Specific meaning. Harris (1974). in Entrepreneurial Control in Farming. wrote. "About l/2 of selected elements of entrepreneurship have been shifted to off-farm firms. The overall trend is toward acceleration of such Shifts brought about by the quickening of change in agricultural technology.“ Such elements of current definitional nature add complexity to an operational definition needed for the reSearch study. Other farm types wunderlich in Ottoson (1963) suggested farming has "moved through the Domestic Stage characterized by largely self-sufficient units and motivated by self preservation: and through the Commercial Stage characterized by off-farm contact with the product markets and motivated by family income. We have now entered the Industrial Stage charac- terized by close interdependence with both resource and product markets and motivated by firm profits." Nikolitch (1972) used the concept of other-than-family farms. This concept was effective as long as the defini- tional characteristics did not require further elaboration for the study at hand. Factory farms as used by pOpular WI“ :3 on 31 writers carry significant connotations but very little definitional characteristics useful for research type classification. Rodefeld's (1975) classification of farm types was useful. as his conceptualizations were explicitly based on various farm structural characteristics. Rodefeld's defin- itions of family. tenant. larger-than-family. and large- scale-industrial type farms were useful in that the farm legal organization (proprietorship. partnership. corporation) was viewed separately from structural type. Rodefeld's research findings on the present and changing status of family and nonfamily type farms have been markedly different from those of the United States Department of Agriculture. These latter studies have classified farms according to their legal organization or in terms of other census definitions. Thompson (1976) added dimensions of rural resident. supplemental-income farmers. senior-citizen farmers and full-time small-farm Operators in his research work concerning small farms in Michigan. Thompson's dimensions were further categorized by off-farm employment. farmer age. and level of farm income. Consistency with census classifications was maintained. For purposes of this study. Michigan TelFarm farm type classifications were unified under the three categories of crop. livestock. and Specialty as shown in the following list. 32 CrOp: Saginaw valley Cash Crop Cash Grain ' Livestock: Cattle Feeding Hog Beef-Hog Beef-Cow Southern Dairy Northern Dairy Southern Dairy Mixed Southern Mixed Northern Mixed Specialty: Unclassified Fruit Vegetable Potato Poultry Forest Products Flower Nursery Mushroom AS stipulated by definition. TelFarm crop farms received less than five percent of their income from livestock or livestock product sales. Spgucture and stpuctural differentiation As was previously noted under the definitions of farm and family farm. structure became a component in the definition as the definitions were eXpanded and conceptual- ized into modern terminology. Nikolitch (1972) included labor and management in the definition of the family farm. Paarlberg's (1974) definition also contained the resources of labor and management. In the study and writing of Structural Changes in West European Agriculture 1950-1970. Breitenlohner (1975) used macro-level structural character- istics of: agriculture in the economy. agricultural labor force. agricultural productivity. agricultural output value. 33 land utilization. average farm size. distribution of agricultural holding by Size. fragmentation. land tenure. mechanization inputs. chemical inputs, and irrigation inputs. The United Nations. Economic Commission for EurOpe (1967) also used macro-level structural characteristics of: labor-force decline. management resources. vocational education of Operator. capital investment. income. part-time farming. type of institution. tenure. type of ownership. sales. output-input. gross sales. pattern of farming. level of technique or mechanization. costs. level of yield. return to capital. family farm income. labor requirement and rent. Donaldson and McInerney. (1973) (2) wrote. "The primary impact of mechanization on agriculture can be seen through the changes in its input structure." ”Certainly mechanization has been the critical enabling factor in the process of farm amalgamation." Weelock (1969) related structural differentiation to sectors of the national economy and suggested that structural differentiation could be used as a predictor of productivity. Ball and Heady (1971) described the traditional family farm as a farm where all of the factors of production were owned and provided for by the farm family. The North Central Public Policy Education Committee (1972) in Who Will Control U.S. Agriculture described structural compo- 34 nents of hired labor and hired management along with rented land and rented machines (capital) noting that they have recently entered into the farming economy in large scale. Harris (1974) analyzed entrepreneurial control in agriculture by describing the traditional family farm in the United States whereby the Operating manager and his family owned and controlled all of the factors Of production. In such a traditional family-farm structure there would have been no differentiation. The direct contrast to such a traditional family farm was the totally differentiated factory-type farm in which hired management had no structural connection with land. capital. or management: land owners had no structural connection with labor. capital. or management. And finally. the Owners of the capital would have no structural connection with land. labor. or management. Rodefeld (1974) labeled these farms with the highest levels of differentiation on all dimensions as the "corporate/industrial type." Gulley (1974) went to considerable detail in describing and diagramming differences in the traditional farm struc- ture and the current commercial farm structure. Difficul- ties were encountered with conceptualizing farm structure as Harris and Gulley's definitions lead from a traditional family-farm structure to the current factory-type commercial farm structure. Their definitions were not at the true endpoints but in the middle of the definitional structural continuum between the two pure endpoints. 35 Nickolitch (1972) gave some insights into structural definitions by his explanation of the current commercial family farm. By his definition. if a farm employed a hired non-owning manager or if more than 50 percent of the total labor was hired. the farm was classified in the other-than- family farm category. This type of conceptualization. however. gave little understanding of farm structure between the exact definitional points on the continuum. Rodefeld (1974) overcame the structural definitional problem by using a differentiation scale which was suitable for mathematical analysis. After analysis the scale was divided into high. medium. and low levels of structural differentiation. and was used by Rodefeld to classify farms according to structural type and investigate the relationship between farm type and rural community characteristics and change. Structural differentiation as defined by Rodefeld was used as the Starting concept for the independent variables of farm structure employed in this study. This differentiation concept may be thought of as losses Of parts of entrepreneuership of the farming operation. (Harris. 1974) Differentiation may be considered as a loss of entrepreneuership functions from the totally owned and managed traditional subsistence type family farm as described by Culley (1974). 3 In the present research. the level of farm structural differentiation will be defined as the extent to which the farm manager is separated from the ownership and/or 36 provision of the remaining factors of production (land. labor. and capital). The level of differentiation between the factors of production may be thought of as the level of non-ownership and/or non-provision of the production factors. Structural differentiation concepts were used to describe the interrelatedness of the traditional produc- tion factors of land. labor. capital. and management. The definition of family farm as defined by Nickolitch (1972) was combined with the conceptualization of farm structure and structural differentiation as used by Rodefeld (1974). The family-farm structural base. where the Operator provided most of the management and the Operator and family provided the majority of the labor for the farm operation. gave a starting point for farm structural consideration which was consistent with current commercial farm Operations in the midwestern United States. In current commercial farm operations structural differentiation may be thought of as infringements between measures of concern. associations. or ownership between the farm Operating manager and the other factors of production. Putting it simply. differen- tiation was used as a measure of who Owns and who controls the factors of production on a farm Operation. High levels of differentiation between the factors of production of a farm enterprise may be considered as either desirable or undesirable depending upon the Specific party at interest. For example, the interests of absentee owners 37 wishing to extract maximum immediate monetary returns from a given farm enterprise with high levels Of structural differentiation would likely be opposed to local area residents who have economic interests which would be best served by low levels of structural differentiation of the given farm enterprise as described by Heady (1975). The Objectives Of the technology-driven part of the research were to empirically determine the types and levels of farm structural differentiation and determine if levels Of structural differentiation were increasing or decreasing. and determine if changes in technology might be responsible for changes observed in levels of structural differentiation. The differentiation variables were designed to range from zero to one. In unique cases. however. differentiation could become greater than one due to unusual farm structural characteristics. Tephnology selection From James Watts' early experiments in England through the steam-power era of mobile power devices to modern tractors of current production. the unit of power has been horsepower. The Nebraska Tractor Test Law of 1919 was the first significant large-scale effort at establishing uniform tractor-test procedures. The test was based on various performance horsepower output measurements and has proved useful from 1920 to present. with very little change. Owing to the various homestead acts and settlement 38 patterns. the large farms which could utilize large equip- ment did not predominate in most areas of the United States. The manufacture of small gas-powered tractors provided an alternative to draft animal power for small farmers. Gray (1956) illustrated in his history of the develop- ment of the agricultural tractor in the United States that very large tractors were in use as early as 1909. Gray stated that by 1925. the low-priced Fordson represented 60-75 percent of the total domestic tractor production. The Fordson and other mass-produced two-plow tractors initiated a two-plow tractor-size era in U.S. agricultural production history. By the mid-thirties most companies had introduced three-plow tractors. Four-plow tractors were introduced in the 40's and 50's. The 60's saw the five- and Six-plow Sizes and by the 70's the horsepower race was full Speed ahead. Early large tractors described by Gray were the Reeves 40-horsepower steam tractor which pulled sixteen 14-inch plows and broke 160 acres in 24 hours. the Gaar-Scott steamer of 25 horsepower which plowed at the rate Of 1 acre in 7 minutes 58 seconds. and the largest Best tractor which weighed 41 tons and had drive wheels each 15 feet wide by 9 feet diameter. The horsepower ratings reported by Gray were likely not based on current methods of calculating horsepower. Gray also illustrated the close association between mobile power sources and plowing. To many individuals the 39 concept of tractor size was based on the number of plows a tractor could pull in a satisfactory manner. The general acceptance Of the plow Size classification was illustrated by Farm Equipment Red Book as late as 1959. Farm Equipment Red Book listed the number and size of plows as the first Specification for each type of tractor. Back (1975) referenced Rask's use of two-plow and four-plow size tractors in labor-utilization studies. With the recent advent of the chisel plow and the introduction Of the adjustable-width moldboard plow. which adjusts from 12-inch cut to 22-inch cut. hydraulically on the go. the concept of number of plows a tractor can pull will likely disappear as a measure of size in the larger tractors. From the standpoint of the present technology assessment. the tractor-size categories were selected and classified as (1). the two-to three-plow-era Size. (2). the four-to Six-plow-era size. and (3). the current trend of tractors sized by 100's of horsepower. The Farm and Industrial Equipment Institute (1976) utilized one-size breakdown in power-take-off (PTO) horse- power for two-wheel-drive farm tractors. and another for four-wheel-drive farm tractors. The two-wheel-drive small tractors were size-categorized as under 35. and 35 and under 40. PTO horsepower. From 40 to 100 horsepower. the interval was in increments of 10 horsepower. Higher horsepower categories were 100 to 120. 120 to 130. 130 to 140. 140 to 150. and 150 and over. The four-wheel-drive 40 categories were under 170. 170 to 200. and 200 and over horsepower. Sohne (1975) graphically illustrated the trends in tractor size by graphing sales of various sizes of tractors over time for the U.S. and the Federal Republic of Germany. The graph illustrated a loss in sales of from 60 percent to 8 percent of tractors of less than thirty-four horsepower in only 11 years from 1953 to 1964. In contrast. tractors of over 100 horsepower in 1964 had only 3 percent of the market. and 11 years later had 54 percent of the market. From Schne's graphic data. the new tractors sold appeared to double in horsepower every 11 years. In contrasting this technology modification with the decline in farm workers, it must be considered that the numbers of tractors used or tractor use per year may have changed significantly. The same interpretation was made from Schne's graph of the Federal Republic of Germany of tractor size doubling twice over the last 20 to 22 years. Implement and Tractor (1976) reported a 7.1-horsepower increase from 1974 to 1975 for the average new tractor sold. This represented an increase of 7.9 percent over the year or over twice the mean increase over the past 10 years. The annual sales of tractors over 100 horsepower increased 2.036 percent over the past 10 years. During the same 10 years, the horse- power sold in size units over 100 horsepower increased 2.798 percent. Bowers (1975) indicated 10 years to be the useful life 41 of a tractor. when this use period was connected with the size of tractor sold. it appeared as though each new tractor sold had the Size capability of accomplishing twice the amount of work of the tractor which it replaced. From the labor standpoint. such would be the case only if the number of tractors remained the same. Implement & Tractor (1976) reported that the number Of new-tractor sales declined from 196,994 in 1973 to 173,801 in 1974 and to 161.147 in 1975. The total horsepower sold over the time period remained relatively consistent. the values being 16,839,000: 15,706,400: and 15,704,900. reSpectively. A great deal of the increased tractor horsepower was used to improve timeliness of field Operations according to Bowers (1975). Harrington (1975) graphically illustrated the use Of increased horsepower per given unit of land in the United States: the horsepower increase was nearly linear over the period of his study. Back (1975) referenced the Ohio study in 1967 by Norman Rask (Cost-Analysis of NO-Tillage Corn". Ohio Report January-February. 1967. p. 14-15). Preharvest labor for two-plow equipment was reported to equal 3.47 hours per acre of corn produced. and for the four-plow size equipment. the labor reported was 1.86 hours. The same figures for no-till were .70 and .50 reSpectively. The study was interesting in that the labor would have been eXpected to have been cut in half when the tractor size was doubled. In the case of nO-till. only a 28 percent 42 reduction in labor was given for a doubled tractor Size. In considering multiples of a technology and tractor purchases. the purchase of smaller tractors was likely to have been Of a replacement nature on a one-to-one basis. Medium-size tractors may have been purchases for a one-to- one replacement basis. or may have been purchased to replace several small tractors. It was unlikely but entirely possible that a medium-size tractor of 100 horsepower was purchased to replace four tractors of the 25-horsepower size. Such a replacement as the hypothetical one-for-four technology modification would likely have had a large effect on farm structure. especially the farm-labor structure. If this trend were carried further to include the largest tractors of 300 to 600 horsepower. then it would have been possible to conceptualize a technology modification of a tractor purchase where one tractor purchased replaced at least twelve smaller tractors. It was highly unlikely that a change Of this order of magni- tude had occurred on any one farm at any one time. In relating the tractor to farm production. Gill (1971) wrote. "Even though many Special-purpose machines are self- powered. a large number of machines draw auxiliary power from the tractor: hence the power of the farm tractor determines the capacity of the entire crop-production system." Combine technology selection was Similar to tractors with reSpect to size and time. Several large combines were 43 constructed and pulled by horses or mules in the late 1800's. Holbrook (1955) reported a 42-foot-wide cutting header on a combine drawn by 40 horses in the year 1828. The combine had an auxiliary engine powered by a steam hose. The Furrow (1975). in its Bicentennial issue. pictorially illustrated a similar combine pulled by over 30 horses and mules. Gasoline-powered combines (requiring three men in place of the 20 to 30 for steam threshing) appeared as early as 1912. according to Holbrook. Steam threshing machines predominated in harvesting until the late 1930's and early 1940's. when small combines of 5 to 6-foot-cut width harvested the majority of sown grain crOps. The small mass-produced combines were power-takeOff-driven and required only one operator. By the late thirties a self- prOpelled combine was manufactured and p0pularized through use by the harvest brigades running from south to north with the ripening grain during the war years. After the war. the size or capacity of these machines began the same increase as tractors. The combines became a multipurpose harvesting machine in the midwest as corn heads were added. Capacity or size was measured in the number of rows of corn that the Specific machine would handle. Combines were usually manufactured in multiples of two rows. With the advent of the 6-row. 30-inch planter, however. many 3-row corn heads were manufactured for the smaller model machines. Row models of 2. 3. 4. 6, and 8-row sizes dominated the 44 market. Official Guide. Tractors and Farm Equipment. (1976 and earlier) listed the four basic sizes of combines offered by most full-line companies. The sizes were based not on the grain-platform head width. but on the corn head carrying capacity. The Official Guide (1976) listed only one power-take-Off combine capable of multipurpose harvest- ing. and it required a 1.000 RPM power-take-off. The size capacity on the machine was equivalent to a six-row corn head which placed the available power-take-off combine in the next-to-largest size category. The company manufac- tured two smaller size models in the self-propelled line. but no smaller power-take-Off model. The conclusion was that no multipurpose least-cost machine alternatives are available today to fulfill the needs of the small farmer. Since the framework of agricultural structural thought has Shifted from an individual-human concept (the self- sufficient family farm) to a business-oriented commercial- production (agribusiness) concept. it seems relevant to base a study of farm structure on economic technological capacity rather than on individual farm-machine size. It was decided to use the level of investment in the machines as a continuous variable to study farm structure. The disadvantages. such as inflation. in using the price paid for various technologies are considered elsewhere in the paper. This study was not one of what technology modification had occurred on the farms. It was a study of the technology 45 modification of tractor and combine purchases and the effects of such purchases on the structure of the farms studied. There was the possibility that a tractor or combine purchase was not a technology modification but a direct machine replacement. This would seem unlikely as the number of years of useful machine life is relatively Short and the rapidity with which new models of tractors and combines were introduced. These and other factors (such as repair down time and average tractor size of purchases and number of trade-ins). taken in aggregate. illustrate how few tractor purchases were made to replace a tractor with the identical tractor technology. Even if a tractor purchase resulted in the same technological replacement as would a trade-in for an identical tractor. then the technological effect from the purchase would have been a null effect from the standpoint of farm structure excepting any Secondary causal forces upon farm structure due to the economic considerations from the purchase. Without investigation. here. it would appear that such economic impact would cause very little if any effect on the farm structure due to secondary infrastructural changes resulting from economic forces. PBELIMIHARY TECHNOLOGY AEZESSMENT Methodologies Followed in Research Two major methodologies were followed in the research. The first was the technology-driven assessment: the second was the problem-driven assessment. The technology-driven assessment part of the research study was initiated by a demographic search of possible areas where sufficient numbers of the technology for study would be located. Potential areas were then narrowed by limitations imposed by financial resources available for the study. Various information sources were investigated which linked the technology for study with components of societal structure. The information source which provided the largest amount of data of types required for the study. at the least cost. was found to be the Michigan State University COOperative Extension Service. TelFarm records. AS the TelFarm record-system data were structured for tax and economic analysis. a large number of procedures were necessary to arrange data into forms useful for the study of various technologies and agricultural structural characteristics. The second methodology followed in the research was 46 47 that of the problem-driven assessment. Several of the techniques used. such as the analysis matrix and quality- of-life components. were develOped by Montgomery (1975) and the Michigan State University Group for the Analysis and Assessment of Technology. The author developed technolog- ical alternatives and technological modifications associated with the agricultural-production technologies in question. Also develOped were societal problems. clientele groups. and reference lists which connected and associated the technological alternatives and modifications with the societal problems. An example was given using technology-assessment techniques as an educational aid.and an inquiry into professionalism was developed. The application of assessment methodologies was preceded by the author's selection of clientele for research findings as suggested by Montgomery (1975). As indicated earlier. the primary objective of technology assessment was to provide information as an aid to decision makers. The first requirement would therefore follow that the decision makers or clientele must be first identified in order that data could be structured to produce maximum educational impact on the decision makers. The clientele list follows. 48 Clientele for Research Findings 1. 2. 3. 4. Farm Machinery Industry Management Design Engineers Labor Sales - in-house industry. advertising, retail Primary Consumers (farmers) Food Policy Makers (generalists) Congressional members Congressional hearings Consumer protection groups Individuals Educational Institutions Agricultural Engineering and Physical Systems in Agriculture Agricultural Education - College level Agricultural Education - High School Vocational Agriculture Extension Rural Sociologists Groups Organic farmers Jeffersonian Agricultural Idealists Farm Organizations Public Interest 49 Technology-Driven Assessment Research procedure Information sources-~The technology-driven part of this technology-assessment investigation was initiated by exam- ining demographically the agricultural crop-producing areas of Hichigan. Indiana, and northern Ohio. Concentric circles were drawn in less-densely pOpulated areas on state highway maps in order to determine farming areas with the least amount of urban influence. Several areas were found with no papulating centers larger than 20,000 persons. Crop- production areas were found in Indiana with 50. 60. 80, and 86-mile diameter cpen areas without major population centers. Michigan areas of low population density were found with diameters of #6. 54, 56, 68. and loo-miles. One Indiana-Michigan non-urban area was found with a 96-mile diameter. As alternative research techniques were examined for viability. the questionnaire survey technique for any of the above selected areas was discarded owing to the distances and time requirements needed to research the subject adequately. Areas closer to urban centers were then considered. Several Lansing-area farm-implement dealers were contacted with regard to locating farms having the technologies to be studied, and with regard to the content of information collected and sent to the company's main office for warranty registration. It was anticipated 50 that warranty registration information for new-tractor and combine owners would supply the necessary leads to find farms which were using increments of the technologies to be assessed. Some reluctance to allowing access to records was encountered. and incomplete warranty records soon proved the technique of inquiry to be of questionable value. Sales personnel turned out to be a good source of information as to owners and locations of the technologies for study. Tony Narnke. Agricultural Sales Representative for Case Power and Equipment. Holt. Michigan. cOOperated by providing model numbers. owner's names. and locations for Case large-tractor owners within the area covered by his company. This information was plotted and coded for tractor size and location. In addition. tractor-owner locations were marked on detailed county road maps which were obtained from the Michigan State Highway Commission. Department of State Highways. The owner list plus the county road maps would allow for efficient follow-up of personal interviews if the method of inquiry was to be followed. The Agricultural Stabilization and Conservation Service was investigated as a potential information source for farm structural data. Specific types of data were available at individual farm, township. county, district. and state levels of aggregation. Number of farms. acreages of farmland. crOpland, various crops, subsidy payments. farm transfers. farm divisions, and farm combinations were 51 the major statistics available. Problems associated with the various data sets were accessibility to longitudinal data. time lag, and incompleteness of farm transfer. combination. and division data. Significant measures of farm structural change could have been obtained: however. the incompleteness and therefore. accuracy of the data would not have been desirable for a comprehensive research study. The reason that the data were not complete was that in recent years very few farmers had participated in any government farm programs. and that data were updated by farmers voluntarily visiting the local Agricultural Stabilization Office to change farm records. Recently. there has been no incentive nor requirement for any farm record updating. It was significant to note that farms in. the USDA governmental institution were defined on an owner- ship-and-producer (tenant) basis and that a land area as small as one-tenth of an acre could have been called a farm. The statistics of farm numbers with this type of ownership definition could not be compared with farm- numbers data from the Agricultural Census. which used a Idifferent economic definition of a farm. A similar method to obtain land ownership and transfer data was found in public legal records maintained by each county property-taxation unit. These records were accurate and maintained up-to-date; however. contractual obligations regarding ownership and future transfer of land would have necessitated an.individua1 search for each record from a 52 different location. Measures of value of farmland. improve- ments. and personal prOperty were available. but they were not in aggregate form. These types of governmental legal data would have been valuable in case-study research for land farm-structure determinations. Each of the previously listed data collection techniques would have necessitated personal follow-up questionnaires. The major source of data for the technology-driven part of this research study was obtained from Michigan State University Cooperative Extension Service. TelFarm records with cOOperation from William Dexter and James Mulvany. An initial investigation was undertaken to determine if sufficient data were available to Justify TelFarms use as a primary data source for the technology assessment. Farm structural and depreciation data were found to be available for approximately 1600 Michigan farms. A change in the computer-tape data-storage system used for storing previous years' data made older data of certain types accessible only by expensive tape-conversion processes. The preliminary study to determine the feasibility of using TelFarm data was initiated by a hand search of the hard cepy of summaries compiled from the first nine-months reports of depreciation schedule transactions which were returned to TelFarm by the participating farmers. The reports were a noncomplete set of data for two reasons. First, all participating farmers did not turn in the specific reports. and second. of those farmers who did turn 53 in the reports. there was no assurance that actual purchases were all included. A list was compiled from the depreciation schedule transactions of new and used tractor and combine purchases amounting to $10,000 or more. The items which were compiled were: county number. farm number. farm type. cost. new or used machine purchased. and machine description. ’From the data set of 89 purchase entries. two types of information were generated. The first was a listing of tractors and the second a listing of combines. The listing of tractors having power-take-off (PTO) horsepower exceeding 130 was compiled by eliminating smaller tractors as listed in the depreciation-schedule description received from the farmers. This information was then used to determine the horsepower from the model identification given and to find the model's horsepower in Implement and Tractor (1976). "Farm Wheel Tractors on the U.S. Market." This technique identified the make and model of 33 tractors. leaving only one tractor which cost $19.30? unidentified. From the price and horsepower data and Official Guide: Tractor and Farm Equipment (1975). it was possible to determine that a tractor at that price was over 130 PTO horsepower. The tractors were then plotted by tractorbmanufacture make by use of coded map tacks on a Michigan county-outline map. The largest number of TelFarm.large tractor purchases per county was four in both Lenawee and Lapeer Counties. Missaukee and Isabella counties had three purchases each. 54 St. Clair. Monroe. Jackson. Ionia. and Saginaw had two each. One purchase each was accorded the counties of Emmet. Clare. Ottawa. Sanilac. Montcalm. Gratiot. Ingham, Kalamazoo. Calhoun, and Hillsdale. The number and make of tractors were 3 Allis Chalmers, a Case. 12 John Deere. 1 Ford. 5 International. 3 Massey Ferguson. 2 Steiger. and 3 White. One make was unknown from the description. TRACTOR. Approximately the same procedure was followed to determine the two largest models of each make of combine with the exception that only the Tractor and Implement Blue Book was used in size determinations. Of the 9 combines identified. 2 were Allis Chalmers. 3 John Deere. 2 Inter- national and 2 Massey Ferguson. Lenawee county had 2 purchases; Monroe. Kalamazoo. Ingham. Allegan. Ionia. Bay. and Schoolcraft had 1 purchase each. From the above information. which covered part of the purchases for nine months. it was determined that the TelFarm record system contained many farms which had purchased large tractors and combines, and that the TelFarm information source should be investigated further as a data source. Computer-aided selection of technologies for study-- The 1975 TelFarm depreciation schedules were selected as a technological data base for this part of the study. The 1975 depreciation schedules carried tractors of various ages. The oldest tractor which had been purchased new. was a 1935 International F-ZO. The data were collected from depreciation summary 55 tapes by selecting all machine categories associated with tractors and combines, and by recording information perti- nent to the depreciation purchase entry. The information recorded included: county number. farm number. farm type, farmers item entry number, machine description. trade-in value. cost. year of purchase, new or used. and machine classification. The columns containing this information were placed on the left of the print-out page for tractors, and the columns for combines were placed on the right-hand side of the page for ease of identifying machine type. Even though the machine classification column contained a further breakdown or description of the technologies. the data were unusable owing to the number of incorrect entries in the machine-classification breakdown. As an example. diesel tractors were entered indiscriminately between the tractor entry code and the diesel-tractor entry code. The purpose of obtaining the information was to enable the location of farms using large tractor and combine technology. Several problems were encountered with reSpect to the full accomplishment of this goal from the raw data. It was evident from examining the data that a large number of partnership purchases were made where the cost indicated only a fractional share of the total cost of the machine purchase for the farm. From the sociological standpoint. the author considered partnerships to be extended family-type arrangements where decisions were entered by mutual agreement. In using a 56 sociological approach to this technology assessment. it was not of significance whether the large machine was owned in partnership but whether the machine was available for use on the farm or farms. Along with the above. an assumption was made that if an item was listed in the TelFarm record for tax purposes that it would likely be used. Machines purchased through partnership were increased in cost to reflect the fractional share paid by the farmer. The computer was able to identify identical entries for approximately 225 machines and make corrections in the cost. Manual corrections and deletions were made on 280 entries which the computer could not discriminate as being partnerships. In addition. several semi-trailer truck tractors were deleted from the data. Several unisystem tractor units were also deleted from the tractor section. Used tractor and combine entries under $500 were deleted. New tractor and combine entries under $1,000 were deleted. Plots were then made of the tractor and combine purchases in new and used categories for 1955 through 1975. The purchase price or cost was plotted against the year of purchase. The plots clearly illustrated the increasing costs of machinery due to inflation and the availability of larger machines. Machine-size groupings were evident in the new-combine plot where the cost distribution was between $1,000 and $#6.000. Combine headers were also distinguish- able from the combines in latter years. The highest machine-cost values for each year were checked for validity 57 by using Official Guide; Tractors and Farm Equipment for various years. From the plots. only one value was found to be outside the expected price range. That value of $23,000 was in New Tractors 1968 and was approximately twice the price of any new conventional farm tractor. The value could have easily been a crawler tractor of large size. waever. since the second highest-cost tractor for that farm was $7,000, the $23,000 entry was deleted. The highest-cost tractor and highest-cost combine for each farm having made a tractor or combine purchase for a given year was selected by computer. From 6.831 tractor entries. 1.526 were selected as the highest-cost tractor entries. From the 1.u41 combine entries. 870 were selected as the highest-cost combine entries on each farm. Although there were 6.831 tractor entries. it would have been incorrect to have assumed that all entries were tractors. as some farmers had entered major repairs and tire purchases which were higher than the $500 and $1,000 minimum for entry classification. A similar situation occurred in the combines. as farmers entered combine crawler tracks ($8,000 in one case) and combine headers in the combine category. Since the highest-cost technology farm-number selection was based on highest single-purchase cost. the non-combine and non-tractor items were eliminated from the new listings. Technglogy and structural methodology If all machine purchases per farm were included as a method of diSpersion for analysis of farm structures. then 58 the structure associated with the small machine purchased by the owner of another large machine would have been weighted equally against the structure where a small machine was the only machine on a given farm. This type of analysis would have been valid: however. it would not have isolated the structural differences as vividly as a system designed to bring out the structural differences associated with the given technology. To find and illustrate the structural differences and changes due to the technologies it was necessary to identify the highest- purchase cost of each type machine which had been purchased on each farm at a Specified point in time. This was accomplished by selecting a subset of farms which purchased a new or used highest-cost machine in 1975 and measuring farm-structure change from 197“ to 1975. This would have given structural change due to the addition of the technology if the effects of the technology were isolated. If the structure were plotted or correlated for each year against the purchase price of the machine. the structure relative to purchase price would have been identified and compared with other structures at different purchase price levels. Structure at various time periods could have been compared; the difference in structure having been made up of structural change due to the technology modification or change plus other factors. If structural change due to other factors was assumed on all farms to have been equal. 59 then total structural change minus structural change due to other factors would have left remaining the amount of structural change due to the purchase of the technology in question. Owing to the structural makeup of the TelFarm depre- ciation schedule. the most accurate information concerning exact tractor and combine technologies in service on the TelFarm farms were for the year 1975. For this reason. machine purchases made during 1975 (those entered onto the TelFarm depreciation schedules) were used in the study of the effect of machine purchases on farm structure and structural differentiation. ‘ The method which TelFarm used to allocate labor to crOp enterprises was consistent over the time of the study. The TelFarm labor allocation system was develOped by using information from different university departmental and farm record sources to establish mean time requirements for the production of each unit of each farm product. On farms which reported a variety of products or enterprises. the labor was divided proportionally according to the prepared computer program. The validity of the allocation system and the variables involved could have added possible errors to the labor data reported: however. the continuity of the allocation system remained the same for the entire study. The labor reported in the study was the labor allocated to crops owing to the primary use of tractors and combines in crOp production functions. sf. 60 A case study of ten farms with highest-cost tractor purchases was completed for 1969 and 1975. Farms were selected on the basis of descending order of highest-cost tractor purchase and those which had reported records sufficient for structural study over the l968-to-l969 and the 1974-to-1975 time intervals. Five farms were eliminated out of the first fifteen in order to obtain sufficient records for analysis. The structural change over the one- year time period was determined by taking the latter-year structure and subtracting the similar earlier-year structure for each selected variable. Computer-aided selection of farm structural characteristics Farm stggctural conceptualization--The farm structural characteristics for the farms for this study were obtained from TelFarm Business-Analysis Summary Tapes. The farm- structural data-information system was conceptualized in a manner similar to that used by Rodefeld (1979). The concepts of farm structural differentiation (as applied to farm structure related to management function. ownership. and labor) were the primary relationships measured. The concept of differentiation may be thought of as a measure of non-ownership or non-provision of the resources needed for assured farm production and continued enterprise viability. A detailed description of the concept of differentiation was covered elsewhere in the study. under "Structure and structural differentiation." 61 Conversion of raw data to fa£m_structural indicators-- TelFarm business analysis summary tapes were used as a data base for the indicators of farm structure. Tapes for the years 1968 through 1972. as originally used with the CDC 3600 computer. were searched by one program. Tapes of the years 1973 through 1975. designed for use with the current CDC 6500 computer. were searched by a separate program. Information was extracted sequentially beginning with the individual farm number. The first part of each farm 3 number was the standard reference code number for the Michigan county where the farm was located. The county code system.was a list of alphabetically arranged Michigan counties coded with number 1 for the first county and progressively numbering each county. The farm number was used as the common element for combining information from the depreciation tapes concerning technologies with farm structural information from the business analysis summary tapes. Thus. the Specific technologies were connected with specific farm structural information on an individual farm basis. Tractor and combine purchases were then arranged according to increasing year of purchase and decreasing cost. The farm structural data were filed by year for each farm for which it was available. To the structural data. which were two rows deep on hard cepy. were added the highest and next-to-highest-cost tractor and combine purchase. for each year. if any such purchases were made 62 during that year. The structural data were then combined with the largest tractor and combine purchase data for each year. Several of the largest tractor and combine purchase farms were then evaluated for structural change with respect to time of major tractor or combine purchases by using hand compu- tation methods. The year of major purchase and the preced- ing year were selected as the years to be considered for determining the structural changes associated with the machine purchase. Differences in structure were determined for each farm that had reported sufficient data to make the calculation. If values were missing. no entry was made in the statistical compilation for analysis. Family-Labor Participgtion-~Family-labor participation was considered as family labor involvement (other than the Operator) in the farm enterprise. The ratio measure was actually a measure of differentiation between the operating manager and total labor control: however. to most individ- uals considering differentiation, the concept of family farm or extended family farm would place family labor differen- tiation in a Special category separate from other differen- tiation types. The cOOperative family decision-making characteristics of the family farm placed the family labor input in a unique relationship with the operating manager. Such a relationship would add measures of control over family labor which would not exist for hired labor. When considered from the family enterprise viewpoint. 63 the family labor involvement was a measure Of family labor efforts Of integration or the bringing together Of individual family labor efforts toward the common family goal of an adequate. least-cost labor supply for the farm enterprise. The family-labor involvement indicator Of differentia- tion was derived by taking the hours of labor reported in the non-paid family-labor category (other than Operator) of Tethrm records and dividing that amount by the total labor utilized in the farm Operation. The previous calculation gave an indicator of family-labor involvement. other than Operator. which varied from zero to one. A zero (0) was an indication that there was no family-labor involvement reported. other than Operator. and a one (1) was an indication that family members (other than operator) did all Of the work. and that the Operator reported no labor for self or hired labor. In such a case. the Operator would have been serving a management function only. Even though the actual number of hours of different types Of labor was considered as a measure of farm structure. the ratio was required to remove the effect Of the component of size. The same method of removing the component Of size was used in calculating the other differentiation ratio indicators. The concept of size (in hours Of labor) was used as a variable in another part of the study. Hired-labor differentiation--Hired-labor differentia- tion was calculated as the ratio of hours of hired labor 64 divided by the total hours of labor reported on TelFarm records. This variable was similar in respect to size when compared to the family-labor involvement variable as it varied from O to 1. However. the concept of structural differentiation was applied to this ratio value because of the wider acceptance of the structural definition of a farm with reSpect to hired labor than with the structural definition of a farm with reSpect to family-labor involve- ment. The concept of labor differentiation. as used by Rodefeld (1974), and developed here by the above ratio. could have been considered as any possible Operational barriers or restrictions which could infringe upon the enterprise between the operating manager and the full accomplishment of the labor factor Of production. The ratio could have been considered a measure Of the non- control which the owning manager had over the labor inputs into the farm enterprise. The ratio was set up as a measure of non-provision (not provided by manager) rather than provision (provided by manager) so that the measurement Of differentiation could be cumulated into sociologically relevant terms as used by Rodefeld (197“). and to allow individuals not familiar with farm structural termininology a more clear understanding Of the concept of infringement upon total entrepreneurial function. Capital differentiation-~Capital differentiation was calculated as the ratio of cash interest paid divided by 65 the sum Of cash interest plus non-cash interest for each individual farm in the TelFarm accounting system. The non-cash interest was a measure of interest which might have been paid to the owner-Operator if the owner-Operator had his assets invested elsewhere than his Own farm enter- prise. The non-cash interest data were used by TelFarm as a means of determining enterprise accounting returns to the management function of the farm enterprise. as contrasted to the returns to equity reserve within the farm enterprise. The differentiation ratio Of capital used in this study was the same as the differentiation between owner-Operator and capital as used by Rodefeld (1974). Capital differen- tiation as viewed by the author was a measure Of non-control Of the capital resources of the farm enterprise. Capital differentiation could have been viewed as equity differen- tiation. Land differentiation--The land differentiation ratio was Obtained by dividing rented acres farmed by total acres farmed. If all land farmed was rented land. then the land differentiation would have been 1. If no land was rented. the land differentiation ratio would have been 0 divided by the total land farmed or 0. The land differentiation ratio was designed as a measure of the non-control (non-ownership) which the farm Operator maintained over the land used in the farm enterprise. Machinery differentiation--Machinery differentiation was calculated by dividing the expenditures for custom- 66 hired services plus eXpenditures for the leasing of equip- ment. for the year, by the farm's reported machine depreciation for the year. If the farm Operation hired and leased a large amount of services and machinery and had a low investment in owned machinery. then the machinery differentiation ratio could have gone above 1. Results Of investigation Two important criteria of measurement were considered when farm structure was analyzed. The first criterion was the absolute value of each of the various types Of farm structural differentiation. The second criterion of measurement was the rate of change. on a year to year basis. Of the various structural differentiation components. The analysis included all farms. crop farms only and subsets Of the first two groups. One major subset of farms selected consisted of the group of farms which. in 1975. had purchased the highest-cost tractor ever purchased by that farm. These farms were designated highest-cost tractor purchase farms. The structural differentiation analysis was based on the 1975 structural data minus that for 197“. The subset included 122 tractor cases. A similar subset involved 10h highest-cost combine purchase farms. The theoretical base for the analysis Of these subsets was develOped in the section of this study entitled Technology and structural methodology. The result Of the above analysis was placed with each appropriate structural characteristic. 67 The results of two separate case studies Of ten farms with highest-cost tractor purchases for 1969 and 1975 were placed with the results of the different structural charac- teristics. For 1969. the highest-cost tractor purchases varied from a high of 315.000 to $9.000 for the ten farms selected. The 1975 highest-tractor costs varied from $97,000 to $30,000. Owing to computer-storage costs for the quantity Of data processed. the longitudinal components Of the research study were handled by hand-computation methods. Tables I through VII were prepared on a single-variable basis from the computer run for each year. The mean structural values were determined for all farms. crop farms only. and other subsets of these two groups. The 1968 data were prepared by conversion Of a previous data-base system. Several Of the 1968 variable values which were reported in the tables were not used in further anal- ysis owing to a large error found in the computer conversion of labor information on one farm in the all-farm category. NO error was found in the crop-farm category. Results and discussion Family-labor pgrticipgtion--Family labor participation was the ratio Of family labor (other than Operator) divided by the total labor input to the farm enterprise. From Table I a structural decrease of 35 percent for crOp farms over the seven-year period. and a u.5 percent decrease for all farms over the 1969-tO-1975 time period was calculated. 68 Figure 1 illustrates the structural changes. For the respective farm types. family-labor participation decreased 12 and 4.“ percent from 1974 to 1975. From the set of all farms. a subset of highest-cost tractor purchase farms was computer selected as described previously. This subset of farms (Big Tractor PurchaSe Farms in the Figures) decreased mean family-labor partici— pation .028 with a standard deviation (SD) Of .0942 and cases (c) which numbered 122 from 197h to 1975. A mean decrease of .0132 (SD .1176) (c 1175) was found for the subset Of all other farms. Mean ratio values were evaluated to have a significance (3) of .01. The reSpec- tive decrease for the subset Of highest-cost combine purchase farms was .012 (SD .099h) (c 104).' In the ten-case study subset Of farms. which was described in a previous section. the computer was not used in the selection of the farms. The mean family-labor participation for this group Of 10 farms decreased .03 between 1968 and 1969 and .06 between 197“ and 1975. Figure 1 illustrates the overall and Specific decreases in family-labor participation on all farms and on crOp farms. From Figure 1 it is evident that Big Tractor Purchase Farms decreased family-labor participation over twice as much as all other farms when the decrease was plotted from the all-farms mean for 197a. 69 TABLE I FAMILY LABOR PARTICIPATION RATIOS Standard Year Mean Deviation Cases All Farms 1968 .1651 .2018 1.781 1969 .1985 .2036 1.544 1970 .1995 .207 1.382 1971 .1962 .205 1.273 1972 .1939 .2092 1.281 197 .1916 .2075 1. 89 197 .1979 .2113 l. 1 1975 .1896 .2117 1.42 Crop Farms 1968 .1849 .2182 141 1969 .1786 .2177 168 1970 .1804 .2110 7142 1971 .1593 .1877 128 1972 .1 30 .2101 117 197 .1 26 .1982 147 197 .1375 .2026 183 1975 .1206 .1898 201 fl 70 .20 ~ 019 "" a) 9. E“! 018 )- «t a: g \ H Big Tractor 53 .17 _ Purchase fl Farms 0 H E: g .16 D ‘5 m :5 >4 '15 ' .4 H E 0117’ " 013 " .12 " ' I 1 1 i I l L Lg 1968 69 7o 71 72 73 74 75 FIGURE 1 FAMILY LABOR PARTICIPATION. 1968-1975. ON ALL FARMS. CROP FARMS. AND BIG TRACTOR PURCHASE FARMS. 71 Hired-Labor Differentiatlggy-Hired-labor differentia- tion was calculated as the ratio of hours of hired labor divided by the total hours of labor used in the farm enter- prise. From Table II the mean hired-labor differentiation increase was calculated to be 29 percent from 1969 to 1975. and 8 percent from 1974 to 1975 on all farms. The mean crop farms labor differentiation increased 53 percent over the 7 years from 1968 to 1975 and 15 percent from 1974 to 1975. From 1974 to 1975. hired-labor differentiation increased .072 (SD .1756) (c 107) on highest-cost tractor purchase farms and .048 (SD .1705) (c 92) on highest-cost combine purchase farms. The mean ratio values were evaluated to have a significance of .02. The data would. at first appearance. seem contrary to the traditional concept that large machines replace hired labor. When considering the concept of labor displacement by machine. it must be kept in mind that the differentiation ratio indicator was designed to remove components Of farm size. The hired-labor differentiation ratio measured the farm structure of the reported labor and was not an indicator of the Specific quantity of labor used. Several reasons for the large increases in hired-labor differentia- tion found by this study were explained in detail by Rodefeld (1974). The mean hired-labor differentiation in the ten-case study Of highest-cost tractor purchase farms increased .13 from 1968 to 1969 and .15 from 1974 to 1975. This 72 TABLE II HIRED LABOR DIFFERENTIATION RATIOS Standard Year Mean Deviation Cases All Farms 1968 .3302 .2949 1.352 1969 .3127 .2892 1.374 1970 .3182 .2799 1.243 1971 .3298 .2769 1.147 1972 .3370 .2826 1.146 197 .3588 .2972 1.206 197 . 7 0 .2995 1.262 1975 . 0 9 .3075 1.264 Crop Farms 1968 .2944 .2736 105 1969 .3328 .3075 13 1970 .3718 .2890 ,12 1971 .3947 .2888 107 1972 .35 3 .3009 98 197 .38 7 .3020 123 197 . 917 .3163 150 1975 . 93 .3400 161 HIRED LABOR DIFFERENTIATION RATIOS 73 Big Tractor Purchase 1 Farms . / .38 r .37 ~ .36 r .35 - .34 - .33 r .32 b .31 - I‘i Ll 41, 1 ’L 1 1, 1 1968 69 70 71 72 73 74 75 FIGURE 2 HIRED LABOR DIFFERENTIATION. 1968-1975. ON ALL FARMS. CROP FARMS. AND BIG TRACTOR PURCHASE FARMS. (Big Tractor Purchase Farms represented by ----) 74 increase was twice that of the mean of the subset of highest-cost tractor purchase farms. The two-fold increase in differentiation between the groups was coincident with a two-fold greater mean tractor cost in the ten-case study farm subset over the mean of the subset Of highest-cost tractor purchase farms. The large decrease in hired-labor differentiation on crop farms from 1971 to 1972 (illustrated in Figure 2) was undoubtedly affected by the decrease in farm labor income in 1971. In that year the farm labor income drOpped to $2.700 for the mean TelFarm farm according to 1971 TelFarm record statistics. Capital Differentiation--Capital differentiation was calculated as the ratio Of cash interest paid divided by the sum Of cash interest plus non-cash interest for each farm enterprise. The increase in capital differentiation on all farms was 17 percent over the seven-year time period. From 1974 to 1975 the increase was 9.3 percent. On crOp farms. capital differentiation decreased 18 percent from 1968 to 1971. and then increased 61 percent from 1971 to 1975. The mean increase for 1974 to 1975 was 18 percent. The highest-cost tractor purchase farms increased capital differentiation .0127 (so .2407) (c 116) from 1974 to 1975. The significance level was .02. Highest-cost combine purchase farms increased differentiation .0029 (SD .1725) (c 97) during the same period. mum... 75 TABLE III CAPITAL DIFFERENTIATION RATIOS Standard Year Mean Deviation Cases All Farms 1968 .3099 .2018 1.781 1969 .3011 .4666 1.324 1970 .3068 .505 1.16 1971 .3077 . 1 1.09 1972 .3509 . 892 1.091 197 .3122 .3446 1.155 197 .3320 .2874 1.206 1975 .3630 . 725 1.214 Crop s 68 31 a 3040 119 19 . . 1969 .2935 .2501 146 1970 .2788 .2101 119 1971 .2625 .2670 113 1972 .3 62 .4840 91 197 .3 38 .3763 117 197 . 578 .4922 148 1975 . 216 .5150 164 WOHB