Soil health after 19 years under organic and conventional agriculture and restored prairie grassland

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dc.contributor.authorBraman, Sarah
dc.contributor.examiningcommitteeTenuta, Mario (Soil Science) Stasolla, Claudio (Plant Science) Gulden, Rob (Plant Science)en_US
dc.contributor.supervisorEntz, Martin (Plant Science)en_US
dc.date.accessioned2012-09-24T16:29:11Z
dc.date.available2012-09-24T16:29:11Z
dc.date.issued2012-09-24
dc.degree.disciplinePlant Scienceen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractThe Glenlea long-term study, located in Manitoba was established in 1992 to compare organic, conventional, no-input and restored prairie grass land management practices. Microbial biomass carbon (MBC), microbial metabolic quotient (qCO2), microbial biomass phosphorus, and microbial nitrous oxide quotient (qN2O) were measured to evaluate soil health. MBC and activity were higher in the forage-grain (MBC= 1613 µg-MBC/g-dry soil; qCO2= 0.75 mg CO2-C/g-dry soil/hr) rotation compared to the annual (MBC= 1124 µg-MBC/g-dry soil; qCO2= 0.60 mg CO2-C/g-dry soil/hr). The forage-grain organic system (1718 µg-MBC/g-dry soil) had the highest MBC compared to its conventional (1476 µg-MBC/g-dry soil) counterpart and behaved similarly to the restored grassland prairie (MBC= 1668 µg-MBC/g-dry soil; qCO2= 1.46 mg CO2-C/g-dry soil/hr). Rotation was significant (P<0.0001) for most variables, suggesting rotation has a strong influence on soil microbial characteristics. Agricultural management practices like perennial organic systems, mimic natural prairies and have the greatest capacity to sustain soil microbial life.en_US
dc.description.noteOctober 2012en_US
dc.identifier.urihttp://hdl.handle.net/1993/8918
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectsoilen_US
dc.subjecthealthen_US
dc.subjectmicrobialen_US
dc.subjectbiomassen_US
dc.subjectcarbonen_US
dc.subjectphosphorusen_US
dc.subjectorganicen_US
dc.subjectprairieen_US
dc.titleSoil health after 19 years under organic and conventional agriculture and restored prairie grasslanden_US
dc.typemaster thesisen_US
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