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dc.contributor.advisorFritschi, Felix B., 1969-eng
dc.contributor.authorDonahue, Janelleeng
dc.contributor.otherUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2012 Theseseng
dc.date.issued2012eng
dc.date.submitted2012 Springeng
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on May 30, 2013).eng
dc.descriptionThe entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.eng
dc.descriptionThesis advisor: Dr. Felix Fritschieng
dc.descriptionIncludes bibliographical references.eng
dc.descriptionM.S. University of Missouri--Columbia 2012.eng
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Plant, insect and microbial sciences.eng
dc.description"May 2012"eng
dc.description.abstractA high yield soybean experiment was conducted to compare the management intensive practices of recent soybean record holder, Kip Cullers, to conventional production practices in 2008 to 2010. Preplant fertilizer applications of poultry litter and mineral fertilizers were compared for their effects on soybean yield and nodulation. While soybean yields increased between 2008 and 2010, preplant treatment differences were inconsistent. Soybean nodule weight, numbers, and size decreased over the three year experiment, but differences between poultry litter and mineral fertilizer applications did not occur. Foliar fertilizers, micronutrient, and irrigation applications were also studied, but did not have significant effects on soybean yield in this experiment. Overall, differences were not observed the high input treatments and conventional practices. To assess if changes have occurred in soybean nodulation capabilities and tolerance to mineral N over time, greenhouse and field experiments were conducted in 2010 and 2011 to survey soybean cultivars released from 1930 to 2002. Results from the field study demonstrate increased soybean yields with increasing cultivar release date, but similar trends in soybean nodulation, total N and leaf ureide concentrations were not observed. These experiments do not support a novel tolerance for N inhibition or loss of nodulation capabilities over time.eng
dc.format.extentx, 152 pageseng
dc.identifier.urihttp://hdl.handle.net/10355/35403
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcollection2012 Freely available theses (MU)eng
dc.subjectsoybean managementeng
dc.subjectsoybean yieldeng
dc.subjectfertilizer applicationseng
dc.titleIncreasing soybean yields through management and the role for nitrogen fixationeng
dc.typeThesiseng
thesis.degree.disciplinePlant, insect and microbial sciences (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


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