Date of Graduation
Master of Science in Agricultural Economics (MS)
Agricultural Economics and Agribusiness
Michael P. Popp
Lawton L. Nalley
Second Committee Member
Larry C. Purcell
Social sciences, Biological sciences, Glyphosate resistance, Maturity group, Nitrogen fixation, Plant density, Soybeans
This thesis is divided into four chapters. Chapter I introduces the rationale behind the study and gives a brief overview of the overall study covering weed control, irrigation needs and nitrogen fixation amounts across soybean maturity group. Chapter II will go into further detail outlining the first applied experiment dealing with weed control and irrigation issues. Alternative weed control methods are analyzed in conjunction with irrigation risk analysis across soybean maturity group in response to agricultural issues of glyphosate resistance and declining ground water supply in the Arkansas delta region. Chapter III will jointly examine irrigation application amounts and nitrogen fixation amounts across soybean maturity group to establish tradeoffs of yield impacts from irrigation while trying to address greenhouse gas emissions stemming from agricultural production. Chapter IV offers concluding notes, study limitations and suggests areas of further research.
Wegerer, Ryan, "Soybean Maturity Group Tradeoffs: Irrigation, Weed Control, and Nitrogen Fixation" (2012). Theses and Dissertations. 443.