Management of Canadian prairie region grazed grasslands: Soil C sequestration, livestock productivity and profitability

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Management of Canadian prairie region grazed grasslands: Soil C sequestration, livestock productivity and profitability

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dc.contributor.author Lynch, D.H.
dc.contributor.author Cohen, R.D.H.
dc.contributor.author Fredeen, A.
dc.contributor.author Patterson, G.
dc.contributor.author Martin, R.C.
dc.date.accessioned 2011-10-05T19:22:51Z
dc.date.available 2011-10-05T19:22:51Z
dc.date.issued 2005-01-06
dc.identifier.citation Lynch, D. H., Cohen, R. D. H., Fredeen, A., Patterson, G. and Martin, R. C. "Management of Canadian prairie region grazed grasslands: Soil C sequestration, livestock productivity and profitability." Can. J. Soil Sci. 85 (2005): 183–192 en_US
dc.identifier.issn 0008-4271
dc.identifier.issn 1918-1841
dc.identifier.uri http://hdl.handle.net/10214/3060
dc.description We are grateful to Mike Main and Julia Cooper, Nova Scotia Agricultural College, for their assistance in the preparation of this manuscript. Thanks also are due to Drs. Martin Entz, (University of Manitoba), and Marcia Monreal (AAFC Brandon) for sharing their valuable experience with us. en_US
dc.description.abstract The GrassGro model (a computer simulation of management-induced changes in range and pasture forage and livestock productivity) was combined with spreadsheet analyses to estimate the influence of improved grazing practices on soil organic carbon (SOC), and farm profitability, across native rangelands and tame pastures of the southern Canadian Prairies. Improved practices included complementary grazing (CG) and reduced stocking density (RSD) on rangeland; and N fertilization (FERT), seeded grass/legumes grazed continuously (GLGC) or rotationally (GLGR), and RSD on tame pastures. The analysis was stratified into three ecoregions on the basis of similarities in climate and soil type. Averaged over 30 yr and ecoregions, SOC rates of gain through improved management were 5 (RSD) to 26 (CG) kg C ha–1 yr–1 for rangelands, and 86 (RSD), 75 (GLGC), 62 (GLGR) and 222 (FERT) kg C ha–1 yr–1 for tame pastures. Gains with FERT were considered largely negated by associated energy (C) costs, N2O emissions, and shifts in grassland species. The CG system alone improved net returns to the producer. The estimated potential combined SOC gain on prairie grazinglands (11.5 Mha) was 1.63 MMT CO2 yr–1 (or 0.465 MMT C yr–1), slightly less than the 1.70 MMT CO2 yr–1 currently emitted from agricultural soils in Canada. en_US
dc.description.sponsorship Funding for the initial research was provided through the Agriculture and Agri-Food Climate Change Table, Environment Bureau. en_US
dc.language.iso en en_US
dc.publisher Agricultural Institute of Canada en_US
dc.subject Soil carbon en_US
dc.subject GrassGro model en_US
dc.subject grazing management en_US
dc.subject rangeland en_US
dc.subject tame pasture en_US
dc.subject Carbone du sol en_US
dc.subject modèle GrassGro en_US
dc.subject gestion de la paissance en_US
dc.subject grands parcours en_US
dc.subject prairies artificielles en_US
dc.title Management of Canadian prairie region grazed grasslands: Soil C sequestration, livestock productivity and profitability en_US
dc.title.alternative Gestion des pacages dans la région des Prairies canadiennes : séquestration du C du sol, productivité du bétail et rentabilité. en_US
dc.type Article en_US


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