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Agriculture--Economic aspects--Research
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Nitrification
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Transformations of ¹⁵N labeled ammonium sulfate and urea fertilizers in soils (with special reference to early immobilization and nitrification processes)
Okereke, Gilbert Uwahamaka
Text (1980)
Part of
Electronic Theses & Dissertations
An economic analysis of potato yields on certain Ontario mineral soils in controlled fertilizer experiments, 1954-1956
Wright, Philip A.
Text (1962)
Part of
Electronic Theses & Dissertations
The controlled-survey procedure : a suggested method for obtaining representative agronomic-economic data
Hoffnar, Bernard R.
Text (1963)
Part of
Electronic Theses & Dissertations
A fertilization experiment with rhubarb
Benson, Edward Byron
Text (1917)
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Electronic Theses & Dissertations
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