On-farm soybean cultivar evaluation for suitability to organic production in southern Manitoba

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dc.contributor.authorCarkner, Michelle
dc.contributor.examiningcommitteeGulden, Robert (Plant Science) Flaten, Don (Soil Science)en_US
dc.contributor.supervisorEntz, Martin (Plant Science)en_US
dc.date.accessioned2016-09-13T13:03:21Z
dc.date.available2016-09-13T13:03:21Z
dc.date.issued2016
dc.degree.disciplinePlant Scienceen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractLack of technical knowledge and proper soybean cultivars are barriers for organic farmers to take advantage of increased organic soybean demand in Manitoba from domestic and international markets. The objective of the present study was to evaluate the performance of 12 early season non-GM food grade soybean cultivars under organic management in southern Manitoba. Cultivars were seeded on four organic farms and one transition to organic farm in southern Manitoba in 2014 and 2015. The mean cultivar yield ranged from 1384 to 1807 kg ha-1, with a mean of 1536 kg ha-1. Cultivars ‘Savanna’ and ‘Toma’ were high performers, but exhibited low stability across sites. Partial Least Squares Regression Analysis indicated that soybean mature height, and biomass at R5 positively contributed to final grain yield. Early height positively contributed to biomass at R5 but negatively affected final grain yield. Soil nitrate content negatively contributed to final grain yield. Weed competitiveness was of particular interest in this study. Contrary to previous reports, cultivars that exhibited early season vigour often resulted in lower yields, biomass accumulation, and increased weed presence as compared to other cultivars.en_US
dc.description.noteOctober 2016en_US
dc.identifier.urihttp://hdl.handle.net/1993/31703
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectAgricultureen_US
dc.subjectSoybeanen_US
dc.subjectOrganicen_US
dc.subjectCultivar evaluationen_US
dc.subjectWeed managementen_US
dc.titleOn-farm soybean cultivar evaluation for suitability to organic production in southern Manitobaen_US
dc.typemaster thesisen_US
local.subject.manitobayesen_US
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