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Nitrogen cycling, profit margins and sweet corn yield under fall cover crop systems

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dc.contributor.author O'Reilly, K.A.
dc.contributor.author Lauzon, J.D.
dc.contributor.author Vyn, R.J.
dc.contributor.author Van Eerd, L.L.
dc.date.accessioned 2013-09-17T14:26:07Z
dc.date.available 2013-09-17T14:26:07Z
dc.date.issued 2012
dc.identifier.issn 1918-1833
dc.identifier.uri http://hdl.handle.net/10214/7550
dc.description.abstract In order to improve N best management practices in southwestern Ontario vegetable farming, the effect of cover crops on N dynamics in the fall and spring prior to sweet corn planting and during sweet corn season was assessed. The experiment was a split plot design in a fresh green pea cover crop sweet corn rotation that took place over 2 site-years at Bothwell and Ridgetown in 2006 2007 and 2007 2008, respectively. The main plot factor was fall cover crop type with five treatments including oat (Avena sativa L.), cereal rye (Secale cereale L.), oilseed radish (OSR; Raphanus sativus L. var. oleoferus Metzg Stokes), mixture OSR plus cereal rye (OSR&rye) and a no cover crop control. Compared with no cover crop, sweet corn profit margins were higher by $450 ha- 1 for oat at Bothwell and $1300 and $760 ha- 1 for OSR and OSR&rye, respectively, at Ridgetown. By comparing plant available N over the cover crop season, the cover crops tested were more effective at preventing N loss at Bothwell than at Ridgetown likely due to higher precipitation and sandier soil at Bothwell. Despite differences in site characteristics, cover crops did not result in increased plant available N compared with no-cover during the sweet corn season at either site, indicating that these cover crops will not provide an N credit to the following crop and growers should not modify N fertilizer applications based on cover crops. en_US
dc.description.sponsorship Ontario Ministry of Agriculture, Food and Rural Affairs; Agriculture and Agri-Food Canada through the Agricultural Adaptation Council CORD IV program; Fresh Vegetable Growers of Ontario; Agri-Food Laboratories Ltd.; A&L Laboratories Inc. en_US
dc.language.iso en en_US
dc.publisher Canadian Journal of Soil Science en_US
dc.subject Economics en_US
dc.subject catch crops en_US
dc.subject nitrate loss en_US
dc.subject oat en_US
dc.subject rye (cereal) en_US
dc.subject oilseed radish en_US
dc.subject nitrogen budget en_US
dc.title Nitrogen cycling, profit margins and sweet corn yield under fall cover crop systems en_US
dc.type Article en_US
dc.rights.license All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dcterms.relation O'Reilly, K. A., Lauzon, J.D., Vyn, R. J., and Van Eerd, L. L.. 2012. Nitrogen cycling, profit margins and sweet corn yield under fall cover crop systems. Canadian Journal of Soil Science. 92: 353-365


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