AUSTRALIAN ISSN 1442-2697 RRP$6.00 MANAGEMENT ADELAIDE CONFERENCE Program and Floor plan FERTIGA TION Maximizing the Value of Your Irrigation Management dV e yours! Jume WHEN YOU'RE RESPONSIBLE FOR THE MOST IMPORTANT ASSET ON THE COURSE, You NEED A PARTNER YOU CAN COUNT ON. LwwCmw, ' .- - Ł . Ł . -Ł ' For every job on your course, there's a John Deere made especially for it. A full-line of quality equipment, born out of the suggestions and critiques of thousands of superintendents and technicians. From quality mowers and tractors to aerators and utility vehicles. But it doesn't end there. We supply you with the industry's best operator manuals and tech literature and we offer the JDCŽ Masterlease*, the most cost-effective way to acquire golf and turf equipment. To see how John Deere can make a difference on your course, call your local John Deere Golf & Turf dealer, or freecall 1800 800 981. h JOHN DEERE CREDIT MG-GOLFATURF-AUST TURFGRASS MANAGEMENT 01-03 ABN 21 008 671 725. ' J0C Masterlease not yet available In New Zealand. WWW.JOHNDEERE.COM NOTHING RUNS LIKE A DEERE^ JOHN DEERE Torrential rain forced pitch preparations undercover for the 2002 VB One Day Series Final Names like Bradman, Benaud, Taylor and Waugh are part of the essence of cricket history at the SCG and in recent years, famous AFL names like Lockett, Roos and Kelly have also become synonymous with this great ground. But the man that makes it all possible is SCG curator, Tom Parker. Since joining the SCG in 1997, Tom has seen many great sporting moments during his time. He has had the privilege of watching milestones such as Shane Warne capture his 300th test wicket on Tom's very first SCG pitch, Tony Lockett's record breaking 1300th AFL goal and most recently, Steve Waugh's century from the last ball of the second day's play against England in the recent test series. "The SCG is such a special place," says Tom. "I still get a buzz every time I walk out on to the ground". The SCG plays host to a wide variety of events including domestic and international cricket, AFL, rock concerts and corporate launches and events. With such a broad range of events to accommodate, Tom has to vary his maintenance program accordingly. During the cricket season, Tom's main focus is on preparing and protecting the centre square area, which contains nine pitches, with up to three of them being in use at any one time. One of the main factors with preparing wickets is the weather and Tom has faced his share of meteorological challenges. "In February last year we suffered torrential rain and hail which impacted on our preparation of the wicket for the One Day finals. As a final resort we constructed a marquee over Once the cricket season is finished, Tom then turns his attention to football and the different maintenance techniques that will be required to prepare the ground for the Sydney Swans home games. During the AFL season, Tom reduces the mowing routine from daily during the summer to twice weekly and he oversews the centre square area and outfield with Rye Grass Caravel. "By oversewing the square, we are able to disguise the wicket area for AFL matches, and also offer a bit more cushioning for the players. We also pay very close attention to the condition of the entire ground by taking regular Penetrometer readings and submitting them to the AFL to ensure that they meet their standards," says Tom. The SCG also plays host to various events like rock concerts and corporate launches during the year as well. "Most of our work takes place once the event has been packed up. After the recent Bruce Springsteen concert, we had to vacuum the surface to remove any debris, and then sweep the ground with a magnet to pick up any screws, bolts or pieces of metal. Then we aerated the surface and replaced the turf in any worn areas. The whole process takes about 7 days to get it back to its playing condition," states Tom. In order to maintain the Legend couch surface of the SCG in first class condition, Tom uses a fleet of equipment that includes John Deere 3235B Light Weight Reel Mowers, 2653A Utility Reel Mowers, 6x4 Gator Utility Vehicles and 4 x 2 Turf Gator Utility Vehicles. "The John Deere equipment has been excellent, but the biggest thing for us has been the excellent service that we have received from our local dealer. Cess Hill Industries. Downtime is something that we can't afford, especially during the summer with our daily mowing routine, and Cess Hill certainly helps us out there. We had an instance on New Year's Eve where there was a split in one of the unit's radiator and it was crucial that we got the unit running to prepare for the upcoming test match. Even though the dealership was closed for the holidays, they opened up especially for us and had the part delivered to us within hours", explains Tom. John Deere salutes Tom Parker and his team at the Sydney Cricket Ground and looks forward to continuing its partnership long into the future. is Ml w&PWst ~ "^iT nrrr 1 in i T r n The SCG in all its glory for the first day of the Fifth Test between Australia and England UMAXX fi Simplot Often It's What You Don't See That Makes Your Turf Better Than The Rest Simplot Signature Series is the first & only liquid range of fertilizers dedicated to the turf industry. Controlled release nitrogen, organics and specialty trace elements provide the Control, Flexibility and Quality demanded by Turfgrass Managers UMAXX stabilized nitrogen is uniquely formulated with a urease inhibitor to stop leaching and denitrification. Compared to other urea-based products, UMAXX delivers more nitrogen per unit at a lower cost. You'll love what it will do for your budget, but you'll really love what it can do for your turf. Polyon controlled release fertilizers utilize advanced Polyurethane coating technology, specifically designed to meet the nutritional requirements of turfgrass without the risk of premature or excessive release that is common to other fertilizers. TriKote coated products are tougher, more dependable and consistently deliver more Nitrogen per ton than any other Polymer Coated Sulfur Coated Urea (PCSCU) on the market today. This means you get more fertilizer for your dollar. VIC -NSW Ł Qld -SA -WA -Simplot Partners (03) 9587 4993 - email: simplotpartners@optusnet.com.au Turfcare NSW (02) 9684 6611 - email: turfcare@bigpond.com.au Northern Rivers Rural Buying (07) 5537 7323 - email: mullally@gc.quik.com.au T-Link (08) 8374 3077 - email: t-link@bigpond.net.au Total Turf (08) 9448 5263 - email: totalturf@upnaway.com When you reputation is on the line, don't settle for anything less than the BEST MANAGEMENT Australian Turfgrass Management Published by: Australian Golf Course Superintendents Association ABN 960 532 058 88 Suite 1, Monash Corporate Centre 752 Blackburn Road Clayton North, 3168 Vic Ph: (03) 9548 8600 Fax: (03) 9548 8622 Email: info@agcsa.com.au Website: www.agcsa.com.au President: Directors: Mr. Mark Couchman Mr. Jeff Gambin Mr. David Warwick Mr. Rob Macdonald CEO: Mr. Steven Potts Editorial/Advertising: Ph:(03) 9548 8600 info@agcsa.com.au Administration Manager: Fiona McPadden Design & Production: Publicity Press Art Direction & Design: Andy Cumming Design Studio: Tiffany Loftus-Hills Kristie Stewart Luke Foley Accounts/Subscriptions: AGCSA Suite 1, Monash Corporate Centre 752 Blackburn Road Clayton North, 3168 Vic Ph: (03) 9548 8600 Fax: (03) 9548 8622 ^^ fc AGCSA m Ä m k A e n í n o n n Nr WW membership application form Secure your career in the 7 jrf Industry..... Ł enhance your job security Ł promote your professionalism Ł receive peer support and free legal advice Ł gain access to a range of educational opportunities and AGCSA publications AGCSA Membership Classes A Course Superintendent/Course Manager $310 B Assistant Superintendent/Allied Turf Manager $277 C Trade Members/Individuals $277 C2 Retired Member $134 C3 Certificate 1-3 Student $134 C4 Foreman/Leading Hands/Ground Staff $244 C5 Company Members 1-3 Individuals $277 4-6 Individuals $233 >6 Individuals $211 AI International Class A Members $360 Membership Application Form Surname: First Name: Preferred Mailing Address: City/Suburb: Postcode: Position: Club/Organisation: Club Postal Address: City/Suburb: Phone: Work: Mobile: Email Postcode: Home: Fax: Member Class: To join the associations your application must be signed by two current Golf Course Superintendent members of the association. Signed: Date: Name: Signed Date: Name: Membership Payment Membership payments for any of the above associations are to be sent to the AGCSA. Ł Please charge this purchase to my credit card account Horticulture Australia Ł Bankcard Card Number: Ł MasterCard Ł Visa Expiry Date: / Proudly supported by Copyright © 1999 AGCSA believes that material sourced and produced for Australian Turfgrass Management is accurate, but give no warranty in relation thereto, and disclaim liability for all claims against the AGCSA, Publicity Press, their subsidiary companies, their employees, agents or any other person which may arise from any person acting on the materials contained within. No portion, in whole or part, may be reproduced without the written permission of the publishers. Cardholder Name: Address: Signature: Send completed application form and payment t AGCSA: Suite 1r Monash Corporate Centre, 752 Blackburn Rd, Clayton North, 3168, Vic Phone: 03 9548 8600 Fax: 03 9548 8622 Email: info@agcsa.com.au A T M 3| cover Main Image, Adelaide Convention Centre. National Turf Industry Census promotion, photography by Robert Johnson Model is Karri from Scene Model Management special features Why we need to understand herbicides' 'mode of action' James Royal recaps a familiar topic that will be useful revision for most. Fertigation - Maximizing the Value of Your Irrigation 1A Management As turf managers up-date and improve the uniformity of their irrigation systems, fertigation is becoming a real option! Charles Burt from the Irrigation Training and Research Center (ITRC) is a world leader in the field and this is essential reading. 19th Australian Conference and Trade Exhibition, 20 Conference Floorplan and Program FEGGA International Summit 30 Following the BIGGA Conference (see page 12), John Neylan attended the International Summit 2003, organized by the Federation of European Golf Greenkeepers Association (FEEGA) and return with some interesting global perspectives on the turf industry. Surviving Cardiac Arrest If someone has a sudden cardiac arrest at your facility, do you know what to do? Do you know how long an ambulance will take to arrive and do you know what chance the patient has of surviving? Special Report - BIGGA Conference In January, John Neylan from AGCSATech formed part of the educational program. This is his report on what was a great week. vilume. I Program and Floor plan TOTA! TURF ¡Łlililí Geoff Kirk Tel & Fax: (08) 9448 5263 Mobile: 0418 941 784 For all your Turf needs... Email: totaltur@upnaway.com |4 A T M This is Big! ( research D Spring Dead Spot: A Major Bermudagrass Disease Researchers at Oklahoma State University and Kansas State University are using molecular techniques to investigate the causes of Spring Dead Spot, a serious disease of couchgrass. 26 ( in every edition ) Presidents Pen 6 AGCSATech Update 24 NEWS 38 AGCSA Bookshop 42 NEW PRODUCTS 44 STATE REPORTS 46 ADVERTISERS INDEX 48 If you haven't already realised, this edition of ATM launches the NATIONAL TURF INDUSTRY CENSUS. This is the biggest project of its type ever conducted for the turf industry and with your support the benefits will be huge. As the industry grows in size and significance, so to does the level of responsibility and expectation. To meet these challenges and to protect its future the industry requires a much greater understanding of exactly how it is made up and how it functions. With these challenges in mind the Australian Golf Course Superintendents Association (AGCSA) with support from the Australian Golf Union (AGU) and Golf Management Australia (Secretary Managers Association), has partnered industry to launch the 'National Turf Industry Census'. The information will assist companies to research and develop products more suited to Australian conditions and requirements but the industries supporting bodies will be much better placed to encourage industry development and to generate funding for turf research and education. Not only that, but by simply completing and returning this form as requested, you will received two (2) free tickets to see a movie of you choice at any Village Cinema. You also go into the draw to win one of five all expenses paid trips to the 20th Australian Turfgrass Conference that will be held in Melbourne in June 2004. The success of the 'National Turf Industry Census' relies completely on your support so please take the time to contribute. You will be doing something for yourself and for your industry. On another note, this will be my final edition as Editor of Australian Turfgrass Management (ATM) magazine. To leave behind the best job in turf wasn't an easy decision but I have given my best and feel that I need new challenges. I am very proud of the magazine we have created and I would like to thank everyone connected with its success. The trade have supported ATM from day one and to them I will be forever grateful but the real strength lies with you the readers. Thank you very much for your support, I hope the magazine has in some way helped you become better. Best regards Phil George Editor PHIL GEORGE EDITOR L¿ J IAN CHIVERS RACING SOLUTIONS JOHN NEY LAN AGCSA a LES BURDETT S.A.C.A I"-WARREN WILLIAMS DOOMBEN RACING CLUB National Turf Industry Census! To receive your 2 free tickets to the movies, simply complete and return the National Turf Industry Census enclosed in this edition. A T M P/r ¿¿Je/it ¿ Pen As I sit to pen this report Australia has just gone to war. Unfortunately, this is not a war of the sporting kind that involves in some way, shape or form a battle of wits to overcome an opponent in the pursuit of pleasure or one upmanship on the green expanse of sports turf that we become accustomed to over the sporting calendar of each year. The ramifications and outcomes of this contest will only come in the fullness of time. As I mentioned in my last report the AGCSA are undertaking an upgrading of the constitution to bring it into line with current times and wordings/legislation. At our board meeting in February the board looked at the membership structure and fee structure and these are being worked through at present for presentation to the members at the AGM to be held in Adelaide in June during the 19th Australian Turfgrass Conference. The state presidents and the board have just met in Adelaide to discuss and review the programme for the Conference and the feelings amongst all in attendance was one of anticipation for the team building day that is being held on the Tuesday of the week. A brief update was presented to all of us, and without giving too much away, I am sure that there will be some stories to tell at the Cocktail Party on the Monday evening. Also discussed was the educational workshop that is planned whilst in Adelaide at the conference to clearly define the educational pathway for the turf industry in conjunction with the recently endorsed National Training Package. The AGCSA Accreditation programme will also now be reviewed to align with the new Package as well. For our South Australian readers in particular, there is to be a one day workshop held at the conference that will be run by the South Australian Golf Association that will encompass some great educational presentations for Club Managers, Greens Chairpersons, Presidents and/or Captains, so make sure that the people that need to know are "in the loop" and don't miss out on this great day. Last year in Brisbane the same format/day was a huge success. Everyone should by now have received their registration package, so take the time to fill it out and get it back ASAP so as to get the early bird registration discount. The AGCSA Award nominations are also out and I am sure that there are many worthy nominees out there, so certainly don't be shy in nominating one of your peers for these most prestigious awards. Also, it is with much regret that I announce that Phil George has decided to resign from his position with the Australian Golf Course 4 i r Superintendents Association (AGCSA) as the Editor of Australian Turfgrass Management (ATM) magazine. The magazine has become well known for the outstanding quality of its presentation and content and is held up as an example to other related industries. As of 31st March, Phil will be employed as a Stock Broker specializing in international (US in particular) equities with Melbourne based Fortrend Securities. On behalf of AGCSA Members and the Board, I thank Phil for the tremendous contribution he has made to the turf industry and wish him all the best in his new career. Yours in Golf, Mark K Couchman AGCSA President Superintendent Tewantin-Noosa Golf Club m, J TURF TALES WITH SCOTTY - Drv Patch Dramas' SCOTTY- WE VE GOT SOME DRY PATCM ON TME 4th -TUE TURF IS DISCOLOURED AND SEEMS TO BE WILTING^.. V ^Tlli SToP BY TUE SUED AND PICK UP TME SOIL PROBE. SEE YOU IN FIVE, RICK. GEEZ - SUES DRY I TMIS SOIL ISN'T WETTING EVENLY. WE NEED TO GET UYDRAFl0 H ON QUICKLY, To GET TWE WATER BACK INTO TME ROOT ZONE. LET'S DO TME OTWER GREENS WWILE WE'RE AT IT. WYDRAFLO ]j is GREAT / - IT'S SO EASY TO APPLY, EVEN WMEN GOLFERS ARE AROUND. WE'LL JUST IRRIGATE IN CYCLES NOW SO WE DON'T GET^ PUDDLES ON rue riPPPN/ i ONE WEEK LATER .. NO DRY PATCM NOW RICK . NEXT YEAR WELL PUT UYDRAFLO ON IN SPRING BEFORE TME DRY PATCM GETS A Too EASY SCOTTY I Brought to you by Sierra*.. .Professional Ttirf Products by Scotts' |6 A T M TEXTRON EXPANDS DISTRIBUTION CANBERRA TRACTORS & TURF MACHINERY 32 Stanford Street Mitchell, ACT 2911 Ph: (02) 6241 4806 Fax: (02) 6241 5880 Contact: Garry Callaghan BH TURF MACHINERY PTY LTD 22 Brunsdon Street Bayswater, VIC 3153 Ph: (03) 9738 2433 Fax: (03) 9738 2455 Email: bsfgolf@bigpond.com Contact: Bryan Harper - 0419 524 088 Brian Hall - 0408 397 508 GODINGS MACHINERY Cnr Yea & Forest Street Whittlesea, VIC 3757 Ph: (03) 9716 2468 Fax: (03) 9716 1121 Email: godings@godings.com.au Contact: Ian Goding - 0408 066 412 Les Harrison - 0438 681 168 Charlie Payne -0418 363 909 or Western Highway Rockbank VIC 3335 Ph: (03) 9747 1584 Fax: (03) 9716 1121 SQUIERS SALES & SERVICE PTY LTD 1069 Greenhill Road Summertown, SA 5141 Ph: (08) 8390 3017 Fax: (08) 8390 3404 Email: squiers@senet.com.au Contact: Darryl Squiers Ł 0408 877 177 MCINTOSH & SON 547 Great Eastern Highway Redcliff, WA 6104 Ph: (08) 9478 2400 Fax: (08) 9479 1475 Contact: Ian Symington, Mike Foster KBE MACHINERY 90 Connector Road Kings Meadows, TAS 7249 Ph: (03) 6343 5971 Fax: (03) 6343 5975 AGRIMOW 307 Pacific Highway Coffs Harbour, NSW 2450 Ph: (02) 6652 9893 Fax: (07) 6652 8958 Contact: Steve CAIRNS TRUCKS & TRACTORS PTY LTD 680 Bruce Highway Cairns, OLD 4868 Ph: (07) 4054 1717 Fax: (07) 4054 7300 Contact: Terry Noy, Kym Gordon, Mark Llewellyn 37 Arkwright Crescent Taree, NSW 2430 Ph: (02) 6552 6888 Fax: (02) 6551 0307 Contact: Brett Trengrove, Tim McCormick BLACK KUBOTA I 123 Beatty Road Archerfield, OLD 4108 Ph: (07) 3277 7599 Fax: (03) 3875 1575 Email: \eg@blackkubota.com.au Contact: Terry griffiths, Murray Scells, Murray Swindles TURFLINK AUSTRALIA PTY LTD 2/37 William Street North Richmond, NSW 2754 Ph: (02)4571 1198 Fax: (02)4571 1138 Email: mpauna@turflink.com.au Contact: Mike Pauna MCDONALD MURPHY MACHINERY PTY LTD Peak Downs Highway Mackay, OLD 4740 Ph: (07) 4952 4550 Fax: (07) 4952 4366 Contact: Bruce Schnitzering, Jason De Marco COUNTRYWIDE FARM SERVICES PTY LTD 18 Cheshire Street Wagga Wagga, NSW 2650 Ph: (02) 6925 1106 Fax: (02) 6925 3699 Contact: Tony Amos We have expanded our distribution network to increase and improve customer service. There used to be three Textron outlets but now, there are 12 dealers, with no less than 17 outlets to service your machinery requirements. We are committed to supporting and training these dealers, and through them, you our customer, will reap the benefits. For the name and location of your nearest Textron Golf, Turf & Specialty Products dealer call... ...(03) 9720 7622 www. textronsolutions. com Textron Turfcare and Speciality Products (Australia) 29 Gatwick Road, Bayswater, Victoria, 3153 Ph: (03) 9720 7622, Fax: (03) 9720 6801 TEXTRON GOLF AND TURF PRODUCTS Why we need to understand herbicides' 'mode of action' Introduction Similarly to farmers over recent decades, turf managers are facing growing community concerns, as well as pressures from environmentalists and regulatory bodies about the way they use pesticides. In response to these concerns and recently introduced regulations, turf managers have been putting more effort into maximising both the efficiency and environmental safety of their inputs, of which herbicides form a large part. Clearly, any changes to input usage requires something of a balancing act, especially if the needs of an increasingly discerning and demanding playing public are also to be met. While this balance can be achieved, at least in part, through better management practices (ie. encouraging healthy, pest and disease resistant turf), major effort needs to be applied to reducing pesticide volumes by reducing or eliminating the need for repeat applications. Understanding how herbicides work (herbicide activity) often makes it easier to find ways to limit their usage. However, herbicide activity is driven by many different factors. One of the most important of these is herbicide 'mode of action'. 'Mode of action' is a term which describes how herbicides interfere with specific physiological processes within target plants (Turgeon, 1994). Understanding 'mode of action' can give valuable clues to working out optimal herbicide timings, spray placement, and pre- and post-application management. Understanding 'mode of action' also gives important clues about herbicide selectivity (ie. turf safety) and resistance development. The aim of this discussion is to stimulate interest in how the major groups of turf management herbicides function and how turf managers can relate and use this knowledge to improving the way they apply and use these important products. Different types of herbicides have different 'modes of action'. These are driven, in large part, by the chemical make up of their active ingredients and, for convenience, different products have been 'grouped' according to the ways in which they affect target plants. In this discussion, we will look at each of the main groups of herbicides and how they work. Within some groups, there are different sub sets or 'families' which share common chemical makeups which, in turn, can affect the way we can best use the products that contain them. Importantly, the degree of 'family chemical commonality' is greater in some groups than in others, and this needs to be taken into account. More importantly than that, however, is the fact that the similarity of 'modes of action' within each group mean weeds which may develop resistance to one member of a group will, almost inevitably, be resistant to other members of the group as well! Disrupters of plant cell growth Often termed 'growth regulator herbicides', this group contains the active ingredients most widely used for control of broadleaf weeds, both in turf and agricultural cereal crops. Plant cell disrupters work by changing the normal hormonal balance in plants which, in turn, disrupts processes such as cell division and protein synthesis (Hall et al, 1999). This is why treated plants generally display easily recognisable malformed growth, such as stem twisting and leaf curling, because their cell growth and division have gone haywire. Active ingredients in this group come from three main chemical families: the phenoxies (eg. MCPA and 2,4-D); benzoic acids (eg. Dicamba); and carboxylic acids (eg. Clopyralid). While there are some slight differences between the modes of action of the different 'plant cell disruptor families', these are generally too specialised to consider from a practical viewpoint. More important is the impact on the performance and environmental characteristics of the individual herbicides. For example, the active ingredients contained in the carboxylic acid family tend to have greater soil residual activity than phenoxy actives (Turgeon, 1994). Inhibitors of photosynthesis This 'mode of action' group contains active ingredients from nine different chemical families, of which only three contain actives registered for turf use. These are: bromoxynil, bentazone and siduron. Interestingly (and importantly) these three actives alone demonstrate the huge variability amongst the chemical families in this group. Bromoxynil and bentazone are both foliar (absorbed through the leaf) and act on contact (ie, mainly affect the parts of the plant onto which they are sprayed, as opposed to 'systemics' which are carried around to and affect other parts of the plant). Both are primarily active against broadleaf weeds. Siduron (present in the product Tupersan), on the other hand, is absorbed mainly through the |8 A T M Sand, Soil & Stone Building, Hardware & Garden Supplies EXCLUSIVE VICTORIAN SUPPLIER OF LOKANDT Proudly owned and run Australian company MCCLELLAND DRIVE FRANKSTON VIC 3199 PH: 9789 8266 5 lines FAX: 9789 8810 WEB: www.burdetts.com.au EMAIL: pearl@burdetts.com.au ally Responsible JAMES ROYAL roots and is mainly active against warm-season grasses such as summer grass, couch and kikuyu. By inhibiting photosynthesis, herbicides in this group affect the target weeds' ability to produce carbohydrate. Interestingly, they do this by blocking the physical transfer of electrons which have been 'energised' by light falling on exposed plant cells in leaves and green stems (Hall et al, 1999). This is relevant because it helps explain how resistance has occurred to Atrazine and Simazine (both from the 'triazine' family) which belong to the same group (photosynthesis inhibitors). Resistant plants have developed a way to shield their cells from the effects of triazines and continue to allow light-energised electrons to pass through to activate the photosynthesis process. Another point of interest is that the symptoms that develop following application of some of the photosynthesis inhibitors are too rapid to be caused purely by the blocking of carbohydrate production. A case in point is bromoxynil which, depending on weather conditions around the time of spraying, usually produces noticeable symptoms within 24 hours). What happens in this case is that the disruption to photosynthesis causes the build-up of toxic radicals in the plant cells. These toxins, in turn, attack proteins and membranes, leading to the loss of membrane structure and cell functioning (Hall et al, 1999). Inhibitors of cell division A number of the soil applied, pre-emergent herbicides act on germinating weeds by inhibiting cell division (mitosis). The dinitroaniline herbicides (DNAs) Š the family to which pendimethalin belongs Š act by stopping the synthesis of tubulin, which is crucial in separation of dividing cells (Hall et al, 1999). Indeed, pendimethalin is effective as a pre-emergent herbicide because it acts against the root development (cell division within the emerging roots) of newly germinating seedlings. As with all pre-emergent herbicides however, cell division inhibitors must not only be biochemically active but also have all the necessary physical attributes. This includes having the ability to bind to the soil, thereby providing a zone that acts as a barrier to germinating weeds. Unique to this group of herbicides is the fact that their selectivity is not based on metabolism (ie. ability of tolerant plants to metabolise the active ingredient to a non-harmful form). Instead, their selectivity relies on their inability to actually translocate into plants (ie, they cannot get into the plants' systems). Instead, they remain trapped outside the meristematic (active growth) zone of the roots of established plants. Major Australian producer of high quality sands, and aggregates, available for maintenance, renovation and construction to the building sports and recreation industries for the past 25 years. MAJOR SPECIALISED USES Ł SPORTSFIELDS Ł RACETRACKS Ł GOLF COURSES Ł OVALS ŁTENNIS COURTS Ł BOWLING GREENS Ł LANDSCAPING USE ONLY THE BEST FOR YOUR MAJOR PROJECT 18th Island green at Hidden Valley G&CC Building Golf Dreams Client focussed: We build to plans, budgets, desires and dreams! Specialists: All construction methods and styles. Experienced: Large and small projects and budgets Total construction packages through to individual plant hire rates Experienced in Golf Course landscape constructions. Previous construction experience includes: Heritage G&CC Hidden Valley G&CC Eastwood GC Medway GC Drouin G&CC Patawalonga GC If your dub s thinking o1 undertaking any course improvements please uxtfad Densal to arrange an obhgatxxi FREE appraisal ot your reouirements DENSAL Phone: (03) 5966 6251 Fax: (03) 5966 6451 36 Hazeldene Rd. Gladysdale. Victoria 3797 Email: chrisyotpg.com.au Key Contacts: Chris Young: 0417 380 298Paul Reeves: 0419 895 939 or Mick O'Shannessy 0409 231 385 A T M 11| Why we need to understand herbicides' 'mode of action' Understanding this important fact helps explains why pendimethalin should only be used on established turf with a well-established root system. While the herbicide does damage some of the newly emerging the roots of well established plants within the 'herbicidal zone', these plants have sufficient additional roots to enable them to tolerate this effect. On the other hand, germinating weeds, with all their fresh new roots trying to enter the herbicidal zone are unable to grow. Dithiopyr (a 'pyridine' and the active ingredient in Dimension), also acts by inhibiting mitosis. Dithiopyr causes the 'microtubules' Š responsible for forming the 'spindle fibres' that separate chromosomes during mitosis Š to shorten and become ineffective during this important phase of cell development (Turgeon, 1994). This is what makes dithiopyr effective as a pre-emergent herbicide. However, dithiopyr can also act as a post-emergent on very young weeds, also by affecting root growth. Propyzamide (Kerb) is another herbicide believed to cause a shortening of the microtubules, which gives it a similar pre-emergent effectiveness (Ware, 2000). Propyzamide (an amide) is present in the group of herbicides listed as having multiple sites of action. The amides as a group also exhibit an effect on photosynthesis (Turgeon, 1994). Propyzamide is absorbed by the roots of plants and translocated throughout, acting as both a pre-emergent and an early post-emergent (Ware, 2000). Inhibitors of amino acid biosynthesis A. Inhibitors of acetolactate synthase (ALS) ALS inhibitors include the 'sulfonyl ureas' (SUs). While SUs were first developed some decades ago and been used in agriculture over many years, chemical companies have recently developed a number of new active constituents which belong to the same family. Some of these have recently been registered for turf in the United States. At present, the only SU active registered for turf use in Australia is halosulfuron-methyl, the active in Sempra herbicide. By inhibiting the ALS enzyme, these herbicides reduce the production and availability of a number of 'essential' branched chain amino acids, including leucine, valine and isoleucine (Hall et al, 1999). As a result of these resultant deficiencies, cell division and plant growth is stopped. While symptoms such as a cessation of plant growth can occur quite soon after application, plant death is usually a slow process. Adsorption of these herbicides can be via the leaves and roots, with translocation in the plant both via the phloem and the xylem (plant 'arteries' and 'veins'). Many of the SU herbicides persist in soil, providing a residual effect against newly germinating weeds. Tolerant plants are able to withstand application of SU herbicides by rapidly metabolising the active ingredient before they become toxic (Hall et al, 1999). B. Inhibitors of EPSP synthase This group contains glyphosate, one of the best-known herbicides in the world. It is different from the SUs because it effects the enzyme 5-enolpyruvylshikimate acid-3-phosphate synthase. This enzyme is used by plants in the production of aromatic amino acids (Hall et al, 1999). Glyphosate is a non-selective herbicide because plants are not readily able to degrade glyphosate to a non-toxic form. Variation in the control of plants by glyphosate is usually caused by an inability of the herbicide to penetrate the waxy cuticular layer on these plants (Hall et al, 1999). The use of an adjuvant therefore becomes most important in these situations. Inhibitors of fat (lipid) synthesis Another major group of herbicides is the lipid inhibitors or, more specifically, inhibitors of acetyl co-enzyme A carboxylase (ACCase). Fatty acids have several vital functions in plants, including the storing of energy, and the formation of cuticles. The ACCase enzyme fires up the initial stages of fatty acid synthesis. (Hall et al, 1999). Two herbicides from the family called aryloxyphenoxypropionates (known widely as 'Fops') are used in turf. One is diclofop-methyl (llloxan) and fluazifop-p-butyl (Fusilade). Herbicides in this group only have activity on grasses. Fusilade is used as a non-selective grass herbicide, while diclofop is used to selectively control crowsfoot in warm-season turf. Both these herbicides are absorbed through leaves, and are translocated to the meristematic (growing point) regions of grasses found in the leaf bases and crowns. It is there that most of the plant's ACCase is also found (Hall et al, 1999). Translocation of Fops is relatively slow, and along with the fact that the effect on cell division is not immediately deadly, symptoms and eventual death of susceptible plants is usually very slow (Hall et al, 1999). Because herbicide mode of action is a very complex topic, this discussion has only touched on the major factors within the main herbicide groups. These days, understanding of the major issues of herbicide action is fast becoming knowledge that is crucial to the progressive turf manager. Obviously, a more in-depth understanding will be of even greater use in helping turf managers make the best possible decisions about what herbicides to use where and, importantly, how to use as little herbicide as possible under a wide range of conditions. James Royal is a plant protection Product Manager with Nuturf P/L A Reference list is available from author. ho A T M Keep The Course Green and Playable ... Even on Service Days ROTORS Efficient Water Management Ł Faster Field Servicing Ł Easily Accessible Components Hunter's new TTS Rotors are the industry's most popular new upgrade. Why? Because superintendents can now achieve efficient water management and "hassle-free" service days. All Hunter TTS Rotors are fully accessible from the top. The unique flange compartment contains the solenoid, solenoid connections, pilot valve and adjustable pressure regulator. The unitized inlet valve features one-step removal of the snap ring, valve, valve seat and rock screen. Routine service is fast and easy, and leaves the turf green and playable. See how Hunter can upgrade your course in affordable stages. Talk to your local Hunter distributor today about a free on-site consultation. Total Top Servicing Authorised Hunter Golf Distributor ^ NUTURF Contact: Alain Dupuis, NuTurf Mobile: 0412 151922 Ł Telephone: 1800 631 008 Email: alain.dupuis@nuturf.com.au Ł www.nuturf.com.au G800 TTS Rotor Hunter Golf Ł 8 The Parade West, Kent Town, South Australia 5067 Toll free: 1800 811 370 Ł Toll free fax: 1800 801 737 Ł www.HunterIndustries.com Hunter GOLF SPECIAL REPORT BIGGA CONFERENCE JOHN NEYLAN ^ ***** or N« NTSR OR THE FINEST W Š' iuSSl \fwm fSE In January I was privileged to represent the AGCSA at the British and International Golf Greenkeepers Association (BIGGA) conference. The AGCSA has had a long association with BIGGA with the exchange of speakers to the respective conferences. In most recent times, Elliot Small and Martin Gunn from BIGGA have attended our conferences. Second only in size to the Golf Course Superintendents Association of America (GCSAA), BIGGA has a membership of about 7000 in 3 - 4 dasses of membership. BIGGA has an administration staff of 15 (has been greater), with departments covering education, membership, marketing and publications. The BIGGA Conference week is always held at Harrogate, about a 1 hour flight north of London, in North Yorkshire. Harrogate specialises in conferences and exhibitions. The education program is provided in several different formats including the: The National Education Conference programme is similar to the AGCSA conference and consisted of a series of technical presentations on Personnel Management and Golf Course Management. The topics covered were typical of those that are of interest to Australian Superintendents including; Staff Recruitment, Staff Discipline, Interviewing, Woodland Management, Foliar fertility, Drainage Design and Tournament Course Preparation. The workshop programme consisted of three workshop topics and coincided with the conference programme. The workshop topics were as follows; 1. Soil Science (1 day workshop) 2. Environmental Management (2 day workshop) 3. Golf Course Design (2 day workshop) Workshops are restricted to about 20 delegates. The Golf Course Design workshop was run by BIGGA and the British Institute of Golf Course Architects. You needed to have attended a Golf Course Design 1 workshop to attend. The Environmental workshop was conducted by Bob Taylor, Senior Ecologist, STRI and repres-entatives from the Scottish Golf Environment Group. Bob Taylor will be attending and presenting workshops at the AGCSA conference in Adelaide. The seminar programme is part of the exhibition and takes place at the conference halls where delegates can elect to attend (and pay for) up to nine seminars. The seminar topics vary widely including tree management, OHS, course preparation, professional development and the rules of golf. I made a presentation on Integrated Pest Management during the seminar series. The venue was very interesting in that it was a very old (100 years old) theatre that required a lot of refurbishment (_10million) and the sound technicians had to enter their area wearing hard hats. As with the AGCSA, BIGGA have award presentations. There are environmental awards and green keeping awards. The environmental awards give prizes (_500 and a plaque) for the regional winners and _2000 for the overall winner. The winner this year had won the award previously. There was also a Master Greenkeeper award presented (like the GCSAA Certified Superintendent Award) of which there are only 32 in the world (including at least one American). They receive a jacket with a logo that proclaims that they are a Master Greenkeeper. Immediately after the awards, there was a keynote address by Debra Veal, MBE, a young lady that rowed across the Atlantic Ocean. It was a 60 minute spell binding presentation that left the audience stunned and amazed. If the UK was not so far away she would be at the top of my list of guest speakers! (i) National Education Conference (ii) Workshop Programme (iii) Seminar Programme (iv) A three day trade show (BIGGA Turf Management Exhibition). I attended the soil science workshop and the most interesting aspect was discussing the soil issues that affect Superintendents from the UK, Ireland, USA and Scandinavia such as ground freezing, frost heave etc. John Neylan Manager, ACCSATech ****** ll I I H ' iJr Chairman: Ken Richard; ,L f John Neylon presents a discussion on IPM Ł Environmental Awards Presentation lAGCSATech Ph: (03) 9548 8600 A T M R iverdale Quality, Convenience & NO KLOGS Ì Kerb provides Australian turf managers with the reliability and convenience they require when chasing effective control of Wintergrass (Poa annua). Application reliability is the key to uniform and effective winter grass control. The new, Riverdale Kerb formulation has a lower bulk density, meaning it is lighter and mixes much more effectively with water. As a result Riverdale Kerb provides much lower risk of nozzle clogging. What does this mean? No extra chemical expenses or labour costs associated with re-application to 'missed areas'. Importantly, by applying uniformly, you ensure the highest level of turf safety. Riverdale Kerb utilises high quality water-soluble packaging. The high quality WSP technology utilised Ł New and Improved Formulation H Lower risk of nozzle clogging Ł The convenience, reliability and safety of water-soluble packaging Ł No measuring, no dust or spillage, no bother! in Riverdale Kerb can be relied on to give even mixing in the spray tank. The 170g WSP size in Riverdale Kerb is the most convenient size available. It allows highly specific application rates, without the need to split bags. The quality water-soluble packaging of Riverdale Kerb means less OH&S concerns. Using Riverdale Kerb means no measuring, no dust or spillage and no bother. When turf managers use Riverdale Kerb, they can be assured they are using a product that is of the highest quality. Effective wintergrass control demands a high quality product. Kerb is the brand Australian turf managers can trust. For more information contact your Nuturf territory manager or local supplier. > Kerb is a registered trademark of Dow Agrosciences LLC. m> ' . Ł Ł Fertígatíon - Maximizing the Value of Your Irrigation Management We now have excellent irrigation hardware, with even better features to come in the future. With the proper design, installation, and maintenance, irrigation systems are now capable of applying the correct amounts of water with a very high degree of uniformity. We are able to monitor the weather and soil moisture with precision, and new advances in irrigation scheduling theory allow us to predict the vegetation water requirements quite well. Fertigation is the application of fertilizers through the irrigation water. Although fertigation is widely practiced today, it should be noted that the fact that it is practiced does not mean that it is fine-tuned. Irrigation was practiced several thousand years ago in the Middle East; just as irrigation practices have recently advanced, fertigation practices will also become much more sophisticated in the future. The next revolution in irrigation will occur with improvements in fertigation. Precision fertigation will provide next major improvements in turf quality and appearance per unit of water consumed. This article will provide the reader with some basic rules on how to get started properly. LOWI/ANDS LAWN; TURF % ^Lld Ł«m, co»»** www.lowlandsturf.com.au All varieties of high quality nursery grown turf Ł 25 Years Experience Ł Complete Laying Service Ł Max-Roll Specialist Ł Unequalled in Turf Production Ł Largest Specialised Delivery Fleet with Transportable Forklifts Ł "Legend" and "Bosker" Couch Ł Patented ST85 + ST91 Soft Leafed Buffalo Ł Patented CT2 Couch Ł Santa Ana Couch Ł "BAyr Root" Turf LOWI/ANDS LAWN; TURF % ^Lld Ł«m, co»»** www.lowlandsturf.com.au (02)4578 1013 Ł FAX (02) 4578 2364 Ł 532 CORNWALLS ROAD, WINDSOR IH A T M CHARLES M. BURT, P.E., PH.D. Why Use Fertigation The correct question is: Why NOT use fertigation? It is easy to automate, plants can be spoon-fed, and fertilizer bills generally decrease when fertigation is used in contrast to mechanical spreading. Turf, in particular, shows an outstanding response to spoonfeeding -resulting in uniform color, vigor, and stand health. A real plus is that with proper fertigation, turf can be maintained green and healthy with less water. Almost all plant growth is governed by a combination of water and fertilizer; fertilizer deficits require more water to achieve the same turf appearance as properly irrigated and fertigated turf. Differences between Turf and Agricultural Fertigation Most fertigation references have been written for agricultural applications. There are several notable differences with turf. These include: 1. Turf is almost always irrigated with permanent, solid-set sprinkler systems. This makes fertigation much easier with turf than with many agricultural applications. 2. The turf "crop" is not usually harvested and removed from the field, as with agricultural crops. With agricultural crops, the fertigation applications must compensate for leaching and volatilization of nitrogen, plus harvested crop removal of N, P, K, and other nutrients. 3. Because phosphorus (P) and potassium (K) are not easily leached from soils with irrigation and rainfall, once a turf field has sufficient levels of P and K subsequent fertilizer needs consist mainly of nitrogen (N) and micro-nutrients. Irrigation System Uniformity Fertigation can apply the fertilizers as evenly as the water is applied to plants. We have measures of irrigation water uniformity -typically we use a ratio called the " Distribution Uniformity", or "DU". DU is defined in the table shown below. A DUk, of 1.0 means that all "elements" or plants in the field receive the same amount of water. A DUk, of 0.80 means that compared to the average of all the plants, the 25% of the plants that receive the least amount of water AVG. LOW QUARTER DEPTH DUlq = AVERAGE DEPTH OF WATER ACCUMULATED IN ALL ELEMENTS (i.e., average of the low quarter) only get 0.8 times as much water. New drip/micro irrigation systems should have a DUK, of greater than .88 - 0.90, as a rule of thumb. For turf sprinkler systems it is not uncommon to have DUK, values of 0.50 or less - meaning that there is very bad uniformity of water application. Rule # 1: When purchasing a new turf sprinkler system, extract a written guarantee of DUk, from the irrigation contractor. The DUk, is not just the "overlap uniformity" in non-wind conditions. It must consider flow rate differences, edge effects, and overlap uniformity in the field. Cal Poly ITRC has procedures, training classes, and software that have been used for over a decade in evaluating the field DU of turf sprinkler systems. Rule # 2: Pay for a competent assessment of your field DUk, and improve the uniformity so that both fertilizer and water are applied evenly. Learn About Nutrient Balances All of the plant nutrients must be available in not only the proper amounts, but also in the proper balance. Unfortunately, we do not have good values for all the nutrient ratios (e.g., N:P, K:S, N:S). We do know a few simple ones, though. For example, the Calcium:Magnesium ratio should be about 2:1 or higher. To identify the proper nutrient ratios and irrigation timing, you will need to do some record keeping on your own turf. Lets Talk Aeration When it comes to Aerating hard dry ground the AERA -vator and Earthquake have no equal, shattering and burrowing to maximum depths in all soil types... In fact THE HARDER THE BETTER For more information call now for a copy of your free information pack. Ph: 1800 640 305 AERA-vator Earthquake Ł Aeration depth to 76mm. Ł Aeration depth to 38cm (15 inches). Ł1.5 and 2.0 mtr working widths. Ł 1.5 and 2.1 mtr working widths. Ł Aerate 6-8 hectares P/D. Ł Virtually zero surface disruption. Ł Ideal for aerating established turf. Ł Unique wave action shatters soils. or preparing new ground for seeding or turfing. Ł Ideal for extremely hard / compacted soils. A favourite of controetors, amok, turf growers and racetracks, over SO sold in Australia making the AERA-vator market leader i units have now keen n broad aere aeration The Earthquake rs the only deep deampactor on the market that am aerate and shatter to maximum depths no matter how hard the profile, and is ideal for sportsgronnds nurt racks and golf course Jainmrys A T M 15| Fertigation - Maximizing the Value of Your Irrigation Management ¡-xi i i Rule # 3: During the year, obtain plant tissue test results of nutrient ratios in poor and excellent areas (visual appearance). Use this information to help decide which nutrient ratios you are striving to achieve over the whole area for best appearance and health. Which Fertilizers Should Be Applied with Fertigation? This depends on the costs of the fertilizer materials, the type of injection equipment used, and the Distribution Uniformity (DU) of the irrigation system. Because phosphorus and potassium do not move in the soil, the least expensive method of applying them is sometimes mechanically. Furthermore, phosphorus in particular can cause sprinkler plugging problems in some water, and mechanical application avoids those problems. If, however, the irrigation system DU is excellent, all fertilizers can be applied through the irrigation system. In any case, all nitrogen should be applied through the irrigation system. A common mix in the U.S. is UAN-32 (urea-ammonium-nitrate), which contains all three of the basic nitrogen forms. Urea and ammonium will both remain close to the ground surface immediately after irrigation. Turf uptakes both ammonium and nitrate; the balance is good. Eventually, both the urea and ammonium will be converted to nitrate and move further into the soil with additional irrigations. The beauty of fertigation is that since it can be done on a daily basis, one does not have to worry about the sudden flushes and declines in growth that occur with Tyflo irrigation cable - the original - is proudly manufactured by Tycab. Tyflo ensures accurate, efficient and economical control of sporting and agricultural irrigation systems. All around Australia, you'll find Tyflo at work on fairways and putting greens, racecourses, cricket and football fields, bowling greens and at most of our leading orchards. Tyflo irrigation cable features: Multi-strand copper conductors PVC sheaths for moisture resistance, flexibility and easy installation HDPE core insulation to resist abrasion in direct burial applications Exclusive sealing system So, when you want championship results, specify the championship irrigation cable. Tyflo from Tycab. History Shows our Quotity. Sales Offices - Victoria (03) 9706 9770 NSW (02) 9772 2599 QLD (07) 3848 2200 SA (08) 8244 5777 WA (08) 9353 1788 Factory (03) 9791 7988 Fax: (03) 9794 0031 Int. Fax (613) 9794 0031 New Zealand (09) 636 9891 Tyflo cable is proudly made in Australia www. tycab. com. a u Quality TYCAB AUSTRALIA |16 A T M mechanical nitrogen applications as a result of the conversions of nitrogen from one form to another over time. With fertigation, these conversions take place continually, and provide a good balance of nutrients all the time. Basic Guidelines We have some basic guidelines for injecting fertilizers. Some of these pertain to safety of equipment and humans, others pertain to feeding the plants properly, and others pertain to avoiding chemical precipitates. Some of the rules are: Rule # 4: Always conduct a jar test before mixing one chemical with another, or before mixing a chemical with water. Using a clear jar, mix the chemicals and/or water in the dosage that you expect to apply. Let the jar stand overnight. If there is any cloudiness or precipitate, be glad you conducted the jar test and now know the combination is not good. Rule # 5: When mixing a chemical with water, always add the chemical to the water, not the water to the chemical. Rule # 6: Never mix acid directly with chlorine Rule # 7: Do not mix concentrated fertilizer solutions directly with other concentrated fertilizer solutions. This often causes precipitations. Even though you may know which chemicals should be compatible, you should avoid direct mixing in the same tank. Rule # 8: Use a different chemical injection pump (and port) for each different chemical. This keeps hoses and fittings clean, minimizes plugging problems, and simplifies calibration of injection rates. Rule # 9: Use the same safety hardware (backflow prevention valve, check valve on the injection line, filter on the fertilizer tank outlet, etc.) as is required by law for pesticide injection. Rule #10: Spoonfeed chemicals throughout the whole irrigation duration, and during all irrigations. By spoonfeeding, the plant is supplied with the fertilizers as they are needed, and most chemical compatibility problems disappear due to the low concentrations. Rule #11: Get a water quality analysis. Learn how much nitrate is already in the water, as well as how much calcium and magnesium might be in it. Rule #12: Absolutely, use proportional injection pumps with turf systems. Proportional injection pumps have electronic controllers that are tied into both the pump and the flow meter (any decent management requires a good flow meter). As the flow rate increases, the injection rate increases proportionally. When you buy such a system, be sure to ask hard questions about how easy it is to understand the controller programming. Also, don't use a cheap flow meter; use a flow meter that samples the majority of the pipe flow. Excellent meters include full-pipe propeller meters, magnetic meters, and some ultrasonic meters. Rule #13: Always inject chemicals upstream of the filters. Rule #14: Always inject upstream of the filters. Rule #15: Always inject upstream of the filters. I assume you get the idea on this one. C > ProPaSS 180 - Low Impact Topdresser mm ¥A AGCSA * Evaluations, Rate the New Ty-crop ProPass N°1 for Dusting Greens q GET SERIOUS ABOUT DUSTING L Ł Some materials need to be broad-cast, others should be applied using a brush. Only with Ty-Crop you can have it both ways. Ł Dust a green in 60 seconds Ł Perfect spread pattern, no brushing in. Ł ProPass 180 patented walking axle and low foot print eliminates any wheelmarks, unlike the competition. Ł Ty-Crop are the only top dressers with true versatility incorporating "quick-release" spinner and brush options. Ł ProPass 180 super fine application saves wear and tear on reel and bed knives - saves you $$$ Ł NEW - "vortex" brush, for heavy applications with a spread width of 7 feet. Ty-Crop the worlds No.1 range of top dressers PLEASE CALL FOR A FREE DEMO! Phone: 02 4571 1198 Fax: 02 4571 1138 Email: mpauna@turflink.com.au A T M 17| Fertigation - Maximizing the Value of Your Irrigation Management How About pH Control? There are many reasons that people control water pH by making the water more acidic. These include enhancing soil infiltration, and reducing plugging of nozzles and emitters. But managers need to be aware of several fundamentals about acidifying water: Rule #16: Do not use strong, occasional dosages of acid. Not only are these less effective than continuous injections; they can also dissolve metal fittings, nozzles, etc. Rule #17: Monitor your soil pH. Acidifying water and applying nitrogen fertilizer will both reduce the soil pH. Plant nutrients are most available at a neutral pH. It's easy to drop the pH below that; it's a lot more difficult to raise the soil pH. If your soil pH is too acidic, do NOT inject lime through the irrigation system. Instead, apply it to the soil by mechanical means. Lime will precipitate in the irrigation system and will ream out nozzles, a Charles M. Burt, P.E., Ph.D. Irrigation Training and Research Center (ITRC) California Polytechnic State University (Cal PolySan Luis Obispo, CA 93407 e-maihcburt® calpoly.edu Note: This information was extracted from the following ITRC publication, which is available for purchase through the ITRC: FERTIGATION. 1995. Burt CM., K. O'Connor, and T. Ruehr. ISBN 0-9643634-1-0. 295 p. contact ITRC at (805) 756-2434 or at www.itrc.org LIS Research Soil Nutrient Analysis Soil Physical Analysis Plant Tissue Analysis ^Disease Diagnosis Nematode Diagnosis Water Analysis Advisory Services A T M O AGCSATech Suite 1 Ph. 03 9548 8600 Monash Corporate Centre Fax. 03 9548 8622 752 Blackburn Road Email, agcsatech@agcsa.com.au Clayton North 3168 Vic He makes sure his greens are never under par Turf Professionals at golf courses and bowling clubs throughout Australia know that the real secret behind immaculate turf is Agrichem. Only Agrichem's leading range of turf management products have the technical superiority and proven track record to provide turf professionals with tournament quality turf -season after season. Australian made and derived from the highest quality raw materials, the Agrichem turf range is the number one choice for turf professionals who want to ensure that the only thing under par on their courses are the players. Beware of inferior substitutes coming onto the market. Insist on Agrichem - Australia's leading range of turf management products. SUPERIOR TURF SOLUTIONS TOLL FREE 1800 654 758 GUERIN GROUP AGR368.turf1 www.agrichem.com.au AGRICHEM 19th Australian Turfgrass Trade Exhibition Floor Plan COMPANY NAME BOOTH NUMBER Agrichem 49 Agriculture Holdings 37 Antonio Carraro 9 Brown Brother Engineering 8 Club Car 66 Country Club International 33 David Golf & Engineering 10 & 10a Dint Greenkeeping 40 First Intervention 79 Globe Australia 68 Golf & Bowling Machinery 62 Greencare Industries 39 Heritage Seeds 48 Irrigation Solutions 63 Jade Chemicals 78 Jimboomba Turf Group 70 John Deere 31 Kennards Hire 43 Mentay 11 & 11a Nuturf 54, 55. 56, 57 Rain Bird Australia 5 Reclaim Industries 76 Redexim 67 Scotts Australia 6 & 7 Simplot Partners 38 Textron Turfcare Australia 35a Toro Australia 34 TurfCraft International 20 SPORTS TURF DRAINERS & CONSTRUCTION SPECIALISTS SLIT DRAINAGE SAND GROOVING USER LEVELLING/GRADING USER CONTROLLED TRENCHING TURF DRAIN AUSTRALIA Bob Paddison Phone: Fax: Mobile: Email: Website: (02) 9652 2208 (02) 9652 2209 0418 261 089 turfdrain@bigpond.com www.turfdrain.com.au TURF DRAIN CONFERENCE PROGRAM GOLF COURSE MANAGEMENT STREAM SUNDAY JUNE 22ND 2003 08.00am AGCSA Awards Judging Stamford Plaza Hotel 3.00pm Registration Desk Opens Foyer Hall H, Adelaide Convention Centre MQNDAYJUNE 23RD 2003 7.30am - 9.00am AGCSA Awards and Breakfast -Hall E, Adelaide Convention Centre 9.00am - 10.00am Partners Coffee and Chat Club Lounge -Stamford Plaza Hotel 9.00am - 9.40am Blokes Business - Balancing work, family and leisure lain Duguid, Lifegrowth Pty Ltd, Hall B & C Adelaide Convention Centre 9.40am - 11.00am The Golfing Experience in 2020 -Hall B & C, Adelaide Convention Centre Workshop 1C River Room 3 AGCSA Research Wrap -John Neylan, ACCSATech 9.00am - 1.30pm Trade Show Opens - Morning Tea / Lunch 1.30pm - 2.30pm Workshop 2A Meeting Rooms 1+2 The fate and behaviour of pesticides in turfgrass ecosystems - Dr Mark Zajac, Syngenta Workshop 2B Meeting Rooms 10 + 11 Advances in understanding and managing water repellent soils - Stan Kostka, Aquatrols Corporation Workshop 2C Meeting Rooms 4 + 5 Challenging Staff with Creative Target Setting -Terri Clementson, Reardon Rothbard 2.30pm - 5.00pm Trade Show - Afternoon Tea 5.00pm - 6.00pm AGCSA Annual General Meeting Meeting Rooms 1+2 Adelaide Convention Centre Workshop 5C Meeting Rooms 10 + 11 The Golf Course as a model for environmental sustainability Joellen Zeh, Audubon International 7.00pm - 9.00pm Toro Golf Champions Function -Adelaide Oval 6.00am AGCSA Golf Championships Ł Royal Adelaide Colf Club AGCSA Corporate Cup -The Crange Golf Club 8.00am - 2.00pm AGCSA Turf Tour -The Crange Golf Club, Kooyonga Colf Club, Glenelg Colf Club 7.00pm 19th Australian Turfgrass Conference Dinner -Adelaide Convention Centre GENERAL TURF MANAGEMENT STREAM 11.00am -11.20am Morning Tea 11.20am - 1.00pm Award Winners Presentations -Hall B & C Adelaide Convention Centre 1.00pm - 1.40pm Lunch 1.40pm - 2.00pm Turf Industry Survey -Hall B & C Adelaide Convention Centre 2.00pm - 3.00pm Plant breeding and the ramifications for turf managers -Dr Leah Brilman, Hall B & C, Adelaide Convention Centre 3.00pm - 3.30pm Afternoon Tea 3.30pm - 5.00pm Staff Operational Management -Venture Corporate Recharge, Hall B & C, Adelaide Convention Centre 7.00pm - 9.00pm Welcoming Cocktail Reception -Adelaide Festival Centre, Presented by Chipco 08.00am - 5.00pm Team Building & Leadership Development Course -Venture Corporate Recharge 08.00am - 9.00am Workshop 1A Meeting Rooms 1+2 Managing Problem Staff -Terri Clementson, Reardon Rothbard Workshop 1B Meeting Rooms 10 + 11 Advanced technology for water conservation and maximization of irrigation efficiency -Stan Kostka, Aquatrols Corporation of America 8.00am - 9.00am Workshop 3A Meeting Rooms 1+2 Pest Control - A global perspective on product development - Dr Mark Zajac, Syngenta Workshop 3B Meeting Rooms 10 + 11 Habitat Management - Joellen Zeh, Audubon Internabonal Workshop 3C River Room 2 Imagine your life in perfect balance -lain Duguid, Lifegrowth Pty Ltd 9.00am - 11.00am Trade Show Morning Tea 11.00am - 12.00pm Workshop 4A Meeting Rooms 1+2 Thinking Superintendent Session Communication Up and Down the Line -Daryl Sellar, Norm Ashlin, Mark Gahan Workshop 4B Meeting Rooms 10 + 11 Australian Golf Course Design - A minimalist approach - Graham Papworth, Society of Golf Course Architects Workshop 4C River Room 2 Organic Products - What's the hype about? Bob Taylor, STRI 12.00pm - 3.00pm Trade Show - Lunch / Afternoon Tea 3.00pm - 5.00pm Workshop 5A Meeting Rooms 1+2 Golf Course Ecology -Bob Taylor, STRI Workshop SB River Room 2 Water Movement In Plants -Andrew Peart, ACCSATech 7.00pm - 9.00pm Welcoming Cocktail Reception -Adelaide Festival Centre WEDNESDAY 25TH JUNE 2003 8.00am - 9.00am Keynote Presentation New grass varieties and there performance -Dr Leah Brilman, Seed Research Institute 9.00am - 1.30pm Trade Show Opens - Morning Tea / Lunch I.30pm - 2.30pm Keynote Presentation Biologically based weed management -Dr Joe Neat, NCSU 2.30pm - 5.00pm Trade Show - Afternoon Tea THURSDAY 26TH JUNE 2003 8.00am - 9.00am Keynote Presentation Don't keep us in the dark - turf management for shade -Andrew Peart, ACCSATech 09.00am - 11.00am Trade Show Morning Tea II.00am - 12.00pm Keynote Presentation Can communication make your male life easier? -lain Duguid, Lifegrowth Pty Ltd 12.00pm - 3.00pm Trade Show - Lunch / Afternoon Tea 3.00pm - 5.00pm Keynote Presentation How to avoid herbicide injury to turf and landscape plots Ł Dr Joe Neal, NCSU 5.00pm Summary and Close NB: Program Subject to change without notice A T M 23| 19th Australian Turfgrass Trade Exhibition Floor Plan THE 19TH AUSTRALIAN TURFGRASS CONFERENCE IS SET TO BE A REWARDING EXPERIENCE FOR ALL DELEGATES. Keynote speakers will include: Bob Taylor, STRI - With over ten years experience Bob will present a series of lectures discussing the latest developments in organic products and golf course ecology. Dr Leah Brilman - Leah will discuss plant breeding - the ramifications for turf managers along with new grass varieties which will be available in the future. lain Duiguid - lain will discuss issues which effect each delegate -whether personal or professional -Balancing work, family and leisure, lain will also focus on men's health. r SN VENTURE CORPORATE RECHARGE VENTURE CORPORATE RECHARGE - A key part of the 19th Australian Turfgrass Conference is the Team Building / Leadership Development Course on Tuesday 24th June. A full day of learning and communicating with fellow delegates is assured. Delegates will have a series of challenges to complete on the day, to gain the "Treasure Chest" with all delegates able to participate in various activities. All activities are designed to use your skills as a team player, use your communication and leadership skills to achieve challenges. Venture uses innovative outdoor team activities together with proven indoor training methods to generate a powerful environment where significant personal and team learning occurs. All delegates are guaranteed a day of exhilaration and challenges that will develop your interpersonal and management skills. a 19th ^ Australian V Turfgrass Conference No.1 construction and top dressing machine Saves man hours = $$$ in your pocket Eliminates turf damage and compaction Attachments - twin spinner and conveyor Ł Australia's No.1 multifunctional top dresser Ł Apply sand fast, precise, back fill core holes Ł No wheel tracking - lightest foot print Ł Attachments - twin spinner and drop brushes Ł Oust a green evenly under 60 seconds Ł Perfect spread pattern - no dragging in Ł No wheel marks - lightest foot print Ł Optional - Vortex brush, for heavier applications "SAFETY - PRECISION - PRODUCTIVITY - CALL FOR FREE VIDEO AND ARRANGE A DEMONSTRATION" WORLDS LEADING RANGE OF TOPDRESSERS Phone: 02 4571 1198 Fax: 02 4571 1138 Email: mpauna@turflink.com.au Chipco gives you the green carpet treatment. Chipco users don't just get the benefits of the world's leading range of turf care products - they get outstanding service as well. So whatever day-to-day challenges and stewardship issues you're facing, the Chipco team will help you tackle them and roll out a green carpet of your own. Chipco making the world green Bayer Environmental Science 391-393 Tooronga Road East Hawthorn, Vic. 3123. Ph. (03) 9248 6888 www.bayercropscience.com.au abn8/00022«022 f Environmental Science is a business (roup oi Bayer Cropsaence Pty Ud. BES1029/0103/The Hopkms Part. Bayer Environmental Science CONSTRUCTION Despite the knowledge and experience we have and the equipment available, it is disappointing to witness another botched construction project. In recent weeks we have investigated the construction of several new golf holes that have been very poorly built. In simple terms it was a matter of poor construction technique, lack of quality control of materials and poor worker supervision by the contractor. The correct construction specification for greens, tees and bunkers is well documented and you only have to go to the USGA website (www.usga.org) for a recipe that will work. The basics are: Ł A correctly shaped and compacted base Ł Agricultural drainage system Ł Gravel drainage blanket (greens and tees) Ł Properly selected rootzone sand or bunker sand In the particular project under investigation, the base was not correctly compacted, drainage pipe did not have the correct fall, the gravel contained excessive fines and the rootzone sand was too fine and of variable depth. In short, the constructed areas were never going to perform satisfactorily. What went wrong? As with most problems, it was as a consequence of several factors; Ł A poorly written specification Ł Poor soil analysis and advice on rootzone sand selection Ł Lack of quality control testing of materials Ł Lack of staff supervision by the contractor Ł Lack of hold and sign-off points during construction Ł Lack of an independent technical advisor to assess the quality of work and compliance with the specification The turf industry to a large extent still operates on relationships and trust. While to some degree this is admirable, it neither protects the client nor the contractor. If a project is to work, there must be a tight specification and diligent project management to ensure all components of the specification are achieved, a SOIL TESTING At a recent Victorian Golf Course Superintendents Association meeting, Phil Ford (NMIT) discussed his recent trip to the USA and in particular issues related to soil physical testing. The USGA has a system of accrediting laboratories that follow the USGA methodologies for testing construction sands. This accreditation is to provide consistency of testing and interpretation of results. This raises the importance of laboratory accreditation in general. In Australia, laboratories can obtain accreditation through the National Association of Testing Authorities Australia (NATA) or through IS09001 accreditation. To achieve this accreditation the laboratory must conform with internationally recognised standards of good laboratory practice and technical expertise. This requires the laboratory to have certain quality control procedures in place to ensure consistency in testing techniques. This involves written methodologies, running check samples of known characteristics, and double checking of results. It also involves keeping statistics that allows confidence limits to be calculated for each test parameter. Confidence limits provide useful information on what can be considered to be a realistic result and what can be the expected variation. When Jim Moore (USGA Greens section agronomist) was in Australia last year, he discussed confidence limits for soil testing and provided a chart for particle size distribution, hydraulic conductivity and porosity. Interpretation of results is also important and for construction sands the parameters are well defined. However, what is a problem are " personalised" interpretations that do not 124 A T M consider industry best practice. One such example is rejecting sands because they have a high drainage rate, presuming that this is associated with low moisture retention. Not necessarily so. For construction materials you must test for moisture retention (volumetric water content) as well as hydraulic conductivity, particle size distribution etc. While there are critics of the USGA Greens Section specification for golf greens, they are guidelines based on 40 plus years of research and refinement and are supported by a well researched analytical package. In fact the specification is presently going through another review and AGCSATech has been invited to be part of the panel to make comments on the latest refinements. In conclusion, by following the USGA green specification criteria and the testing methodologies, you will be able to make sound judgements about the suitability of materials for construction. Also, make sure that your laboratory has some form of independently recognised accreditation. DR BRIAN HOLL VISITS AUSTRALIA At the 9th International Turfgrass Society Conference (in Toronto, Canada) dinner, a jovial Canadian, Dr Brian Holl, hosted a table of Australians. Brian went on to assist with the post-conference tour and all that met him appreciated his company and local knowledge. Brian is presently in Australia and working out of the University of Melbourne, Burnley Campus and putting his expertise to good use. Brian's expertise is in soil microbiology and while in Australia is undertaking trials at two golf courses in conjunction with David Aldous (Burnley) and AGCSATech. John and Andrew are assisting with the trials by securing trial sites and applying the treatments. The trials being run involve applying various organic soil/turf conditioners and then measuring the microbial response. The technique involves taking soil samples, extracting the soil microbes, incubating them and then measuring their metabolism. It is a very interesting project in that we often apply various organic products in order to stimulate microbial activity. However, we do not know what magnitude the response will be. These trials will hopefully answer some of these questions. The trials are being undertaken at: Ł Werribee Park Golf Club (Course Superintendent Michael Russell) on a sand profile and a "pushup" style putting green. Ł Patterson River Country Club (Course Superintendent Michael Riordan) on a new sand profile putting green. These sites provide us with a range of situations: Ł A new profile with a juvenile microbial population Ł An old and mature sand profile with a developed microbial population Ł An old soil 'pushup' green where it would be expected to have a more active microbial population The treatments selected include products used in the industry and are; Ł Kelpak and molasses Ł Kelpak Ł Amniogrow Ł Carboaid Ł Supa humus Ł Essential Ł Untreated control The trial will be completed in late April and some of the results will be presented at a seminar at Burnley College on the 9th April 2003. A and B: Phoma sp. DISEASE OF THE MONTH At AGCSATech, we recently became aware of a 'new' disease and the devastation it caused. Others had diagnosed this damaging fungal organism as Phoma spp. Phoma spp. is a fungal organism associated with damaged plant tissue caused by any number of factors such as heat stress, other fungal pathogens and turf damage in general. It is an organism that develops in the dead or dying leaf tissue and is rarely associated with living, healthy tissue and is easily detected when looking for other plant pathogens. Is it a problem in its own right? All of the authoritative references say no and its presence indicates the presence of some other casual organism or factor. Is it causing any damage? Again the literature says no, stating that it is taking advantage of the weakened plant tissue, where it can easily penetrate and grow and is only living in plant tissue that would die any way. The literature does not discuss any specific fungicide treatments because of its association with other causes. However, most systemic fungicides clear it up. If Phoma spp has been diagnosed other causal factors need to be investigated as it is most unlikely that it will be the primary problem, 4 >v J i A T M 25| Spring Dead Spot: A Major Bermudagrass Disease Researchers at Oklahoma State University and Kansas State University are using molecular techniques to investigate the causes of Spring Dead Spot, a serious disease of bermudagrass. SUMMARY Research continues at Oklahoma State University and Kansas State University to gain a better understanding of Spring Dead Spot, a major disease of bermudagrass, (Couchgrass) Developments include: Ł Three root-rotting fungi cause the disease: Ophio-sphaerella herpotricha, O. korrae, and O.namari. Ł Bermudagrass varieties with greater winter hardiness also better resist SDS infection. Ł Factors that delay fall dormancy, such as excessive fall fertilization, as well as poor drainage, and excess thatch promote SDS. Ł Resistant bermudgrass varieties include Guymon, Midlawn, Midfield, Midiron, Yukon, Marage and Sundevil, although no varieties are immune. Ł Researchers are investigating whether certain bacteria can act as biocontrol agents to help control the disease. Ł Researchers are also investigating the infection process under controlled conditions to gain insight for improved control. Ł Work is being conducted to document bermudagrass gene expression during SDS infection. With this knowlege, researcher hope to incorporate resistance genes into future varieties using advanced microbiological techniques. Spring dead spot (SDS) is a major disease that affects bermudagrass in the United States and worldwide. Within the United States, the disease is most prevalent in the northern range of bermudagrass adaptation (Figure 1) (5,7). Researchers at Oklahoma State University and Kansas State University are focusing their efforts on gaining a better understanding of the way bermudagrass is infected with the ultimate goal of developing improved control options. Figure 1. Range of bermudagrass growth (yellow and green) and SDS infection (yellow). Note that SDS is predominant in the northern range of bermudagrass adaptation. (Adapted from A. Gould , editor. Turfgrass Patch Diseases Caused by Ectotrophic Root: Infecting Fungi. APS press, St. Paul, Minn.) The Pathogens The disease was probably first noticed as early as 1936, and fully described by 1960 (14). Today we know three root-rotting fungi cause the disease: Ophiosphaerella herpotricha, O. korrae, and O. narmari (2, 4, 12, 15). All three fungal species are found in the USA (16). O. herpotricha is the most abundant causal agent in the Midwest. Ophiosphaerella korrae has been located throughout the USA and Australia. O. narmari has been isolated in California, Oklahoma, Kansas, and is a major pathogen in New Zealand and Australia (16). Furthermore, O. korrae infects several other plants including Kentucky bluegrass, annual bluegrass and red fescue where it causes the disease known as necroticring spot (3, 17). Symptoms and Resistance Symptoms of the disease include circular bleached and depressed thatch areas from six inches to three feet in diameter (Figure 2). The fungus usually takes from two to three years to become fully established. Once established, the below ground roots and rhizomes are typically covered with dark brown to black fungal hyphae . Like many root-rotting fungi, this fungus is most active in the early fall and spring when temperatures and moisture favor fungal growth and when bermudagrass growth slows down. In the fall, infection weakens the bermudagrass root system and predisposes it to winter injury. For this reason the disease is more common in northern colder climatic areas and during years of severe winter (10). Resistance to the disease has been identified in many bermudagrass varieties . Researchers have shown there is a close association between resistance to SDS and resistance to cold temperatures. In other words, bermudagrass CRICKET PITCI www.mentay.com.au FREECALL: 1800 037 075 rrn iìieììlAv i EQUIPMEN TOW A TARP ROLLERS SIGHT SCREENS AQUA WIZZ 126 A IM Michael Anderson, Arron Guenzi, Dennis Martin, Charles Taliaferro, and Ned Tisserat varieties that resist the cold also resist SDS infection (1). Since freezing temperatures tend to increase damage, it stands to reason that cold resistant varieties would show less damage then non-resistant varieties. Nus and Shashikumar (11) showed that infection with O. herpotricha and O. korrae reduced the ability of a single bermudagrass line to adapt to cold temperatures. With the coming of spring and warmer temperatures, bermudagrass breaks dormancy and spring growth continues. In the diseased areas, damaged tissue often fails to regrow leaving the characteristic circular patches containing dead and dying tissues. However, regrowth can occur from the margins of the infection zone and from surviving plants within the patch resulting in a recolonization of the dead areas. Often recolonization by aggressive varieties may cause the patches to completely disappear. This seasonal cycle of infection and recolonization results in a variation in patch size from year to year. For some unknown reason, after five to six years, the symptoms usually subside and can even disappear. Control Measures What can be done to reduce the damage caused by SDS? Unsightly patches of infected bermudagrass often require expensive remedies. Severity of disease symptoms increases with a number of environmental conditions and cultural practices. Generally speaking, factors that delay fall dormancy, or reduces winter hardiness tend to promote the disease. Excessive fall fertilization and an accumulation of thatch will increase SDS infection. Bermudagrass growing on soils that are poorly drained or have been compacted also show greater symptoms. Dr. Ned Tisserat recommends dethatching and core aerification to reduce damage cause by SDS (12). What about fungicides? Unfortunately, chemical fungicides have been erratic with respect to disease control. Control varies from year-to- year and usually requires more than one application. One of the best approaches for reducing SDS where O. herpotricha is the casual agent is the use of resistant bermudagrass varieties. The program of Dr. Dennis Martin has been very active in evaluating SDS response in commercial varieties and elite breeding lines (8, 9; Figure 3). Resistant varieties such as Guymon, Midlawn, Midfield, Midiron, Yukon, Mirage and Sundevil typically show less damage due to SDS. However, none of these varieties are immune to the disease and some do not offer the quality demanded by golfers. Susceptible varieties include Arizona Common, Cheyenne, Jackpot, NuMex Sahara, Oasis, Poco Verde, Primavera, Princess, Sonesta, Shanghai, Tifton 10, Tifway and Tifgreen, Tropica, Vamont, and Sunturf. Biocontrol Researchers are also investigating other potential means of controlling SDS. One such means is through the application of a biocontrol Can you see where the Antonio Carraro tractor has been on this golf course? Nobody else will either. Due to the even distribution of weight over 4 equal sized wheels, ANTONIO CARRARO tractors exert less pressure (around 7psi/50kpa) than most utility vehicles, let alone other tractors. Combine this with features such as reversibility, compact dimensions, great manouevreability, amazing stability on slopes, and you have an incredibly versatile turf apable of carrying o ' Mta conditions when the others simply wont. maintenance tool, capable of carrying out many tasks in the most difficult But don't take our word for it. Contact us and arrange for a demonstration to make up your own mind. ANTONIO CARRARO OCEANIA P.O. BOX 2018 TAREN POINT NSW 2229 PH: (02) 9540 3155 Email: carraro@bigpond.com # # Ł aUM A T M 29| Spring Dead Spot: A Major Bermudagrass Disease agent. Biocontrol agents usually consist of microorganisms that kill or inhibit the growth of specific plant pathogens. Several biocontrol agents have been successful in controlling specific plant diseases. Recently, a bacterium was found by the laboratory of Dr. Michael Anderson that dramatically suppressed the growth of O. herpotricha in the lab (Figure 4). Perhaps incorporation of an aggressive bacterium into the soil may suppress the infection process enough to tip the balance in favor of the bermudagrass plant. The bacterium could be applied as a soil drench during the fall when the fungus is most active, or in the spring to improve the rate of recovery during spring green-up. Plots are currently established for the testing of this biocontrol agent in the field and results should be forthcoming in a couple years. Basic Biology Research to better understand the basic biology behind the infection process is also continuing. There are many constraints in studying SDS and in breeding for resistant varieties. One of the major constraints is that it takes two to three years to establish the disease in the field, and an additional three years to collect and analyze the data. All in all, at least three to five years of work are required before field trials can provide meaningful data. Breeders, especially commercial breeders, are reluctant to tackle this problem directly if it takes five years to evaluate the material after each round of genetic selection. There has to be a better way. Conceivably, controlled environmental studies could take less time. However, results Immature Inflorescence from controlled studies often fail to correlate with those from the field. In other words, varieties showing resistance in the field often fail to do so under controlled conditions. This indicates that certain factors that contribute to resistance may be missing in the controlled studies. At Kansas State University, Dr. Ned Tisserat is studying the infection process under controlled environmental conditions in order to identify Growth of Floral Tissue in Petri Dish r- m Gene Insertion and Selection of Engineered Cells Transgenic Plant Root Formation Figure 5. Diagram of the basic steps involved in genetically engineering a plant with a piece of foreign DNA. Small pieces of bermudagrass flower tissue are grown in media and then bombarded with gold particles containing the DNA of interest (i.e., resistance to SDS). After bombardment, transgenic tissue is selected and regrown to encourage both shoot and root regrowth. Ultimately a transgenic plant is recovered and evaluated for the presence of the new DNA. If Only The Weather Were This Everything you've heard about Club Car is true. We give you the best engineering, the most durable construction, the most comfortable ride, and the most stylish design you'll find on any course. And our dependability is legendary. Whether it's a Turf 1, Turf 2, Turf 272 or Turf 6 you'll find we never rest on our laurels. Club Car ploy to win CLUB CAR PTY LTD For your nearest Authorised Dealer call our FREECALL number: 1 800 680 088 www.clubcar.com.au Spring Dead Spot: A Major Bermudagrass Disease these missing factors. Dr. Tisserat is primarily focusing on low temperature applications and inoculum levels in order to simulate field conditions. Other factors such as differences between the microbial composition of field soils or the presence of a heavily infested thatch layer may also be associated with resistance manifestation. Successful identification of the missing factors will provide valuable information concerning the infection process and allow the construction of a more rapid screening system. Understanding Genetic Resistance Finally, a better understanding of the infection mechanism at the molecular level could lead to novel and improved control methods. In the laboratory of Dr. Arron Guenzi research is being conducted to identify genes that are activated and deactivated during the infection process. Genes direct the biological activity of all living organisms. The pattern of activation or deactivation of specific genes drives all biological processes. Research has shown that many plant defense genes are activated in response to fungal infection. The idea behind this research is that if one could identify the pattern of gene expression one could better understand how the plant defends itself against pathogen attack and ultimately engineer a better defense response. By analyzing patterns of gene expression, Dr. Guenzi hopes to uncover important genetic relationships that are associated with the SDS infection process and resistance mechanisms. In addition to the work on gene expression, the laboratory of Dr. Guenzi has also been active in developing techniques to incorporate new genes into bermudagrass through genetic transformation (Figure 5). There are great barriers when working with a plant species such as bermudagrass that has never been effectively transformed. Although many attempts have been made in the past with little success, the successful and efficient transformation of bermudagrass will allow for the incorporation of new and important genes into current cultivars. This team approach by researchers from Oklahoma and Kansas State Universities should yield greater knowledge of the infection mechanisms and provide new tools to combat this costly disease. As we advance into the future, it is our hope that research supported by the USGA will ultimately bring to producers and users improved turfgrasses, management procedures, and biotech nological and micro- biological tools to make SDS a subject of history. Acknowledgements The authors wish to that the United States Golf Association for their support which made this research possible. MICHAEL ANDERSON, ARRON GUENZI, CHARLES TALIAFERRO are faculty members in the Department of Plant and Soil Sciences at Oklahoma State University; DENNIS MARTIN is a faculty member in the Horticulture and Landscape Architecture Department at Oklahoma State University; and NED TISSERAT is a faculty member in the Plant Pathology Department at Kansas State University This article was reproduced with the permission of the USGA Green Section Research. This and many articles can be viewed at " Turf grass and Environmental Research Online." jl References 1. Baud. J. H., D. L. Martin, C. M. Taliaferro. M. E. Payton, and N. A. Tisserat 1998. Bermuda-grass resistance to spring dead spot caused by Ophiosphaerella herpotricha. Plant Disease 82:771-774. (TGIF Record 76975) 2. Crahay J. N.. P. H. Demoeden. and N. R. O'Neill. 1988 Growth and pathogenicity of Leptosphaena korrae in bermudagrass. Plant Disease 72: 945-949. (TGIF Record 13541) 3. Demoeden P. H., M. Zhang, and H. C Wetzel. 1995. First report of necrotic ring spot (Leptosphaeria korrae) in creeping red fescue in Maryland. Plant Disease 79:966 (TGIF Record 35167) 4. Endo, R. M.. H. D. Ohr, and E. M. Krausman. 1985. Leptosphaeria korrae, a cause of the spring dead spot disease of bermudagrass in California. Plant Disease 69:235-237 (TGIF Record 76982) Environmental Turf Management System m A * 4 > «