Introduction of cover crops in a maize–soybean rotation of the Humid Pampas: Effect on nitrogen and water dynamics

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dc.contributor.authorRestovich, S. B.en
dc.contributor.authorAndriulo, A. E.en
dc.contributor.authorPortela, S. I.en
dc.contributor.departmentSustainable Agriculture and Natural Resource Management (SANREM) Knowledgebaseen
dc.coverage.spatialHumid Pampasen
dc.coverage.spatialArgentinaen
dc.coverage.temporal2005 - 2011en
dc.date.accessioned2016-04-19T20:29:23Zen
dc.date.available2016-04-19T20:29:23Zen
dc.date.issued2012en
dc.descriptionMetadata only recorden
dc.description.abstractThe continuous cropping system of maize-soybean rotation in the Humid Pampas poses a risk for the leaching of nitrogen. The purpose of this study is to determine the effect of fall-winter cover crops and a mixture of oats and vetch on water use, yields of main crops, and the potential for nitrogen losses. Trials took place between 2006-2011. Generally, cover crops reduced risk of spring nitrate leaching, though vetch and rape increased the risk of nitrogen leaching when preceeding maize. Low carbon to nitrogen ratios of cover crops were associated with increased nitrogen availability and higher maize yields. Oats and vetch before maize and grasses before soybeans resulted in the best alignment between nitrogen release from degrading cover crops and main crop nitrogen needs. Water use did not affect main crop yield except during an unusually dry season. This study supports the use of cover crops to enhance water use efficiency and nitrogen recycling while maintaining or raising yields of main crops in the Humid Pampas region of Argentina.en
dc.format.mimetypetext/plainen
dc.identifier5365en
dc.identifier.citationField Crops Research 128: 62 – 70en
dc.identifier.doihttps://doi.org/10.1016/j.fcr.2011.12.012en
dc.identifier.issn0378-4290en
dc.identifier.urihttp://hdl.handle.net/10919/69924en
dc.language.isoen_USen
dc.publisherElsevieren
dc.rightsIn Copyrighten
dc.rights.holderCopyright 2011 Elsevier B.V. All rights reserved.en
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAgricultural ecosystemsen
dc.subjectHumid zonesen
dc.subjectWater useen
dc.subjectSoil nutrientsen
dc.subjectNutrient managementen
dc.subjectCover cropsen
dc.subjectNitrate leachingen
dc.subjectResidue c/n ratioen
dc.subjectAvailable wateren
dc.subjectYielden
dc.subjectMaizeen
dc.subjectSoybeansen
dc.subjectHumid pampasen
dc.subjectArgentinaen
dc.titleIntroduction of cover crops in a maize–soybean rotation of the Humid Pampas: Effect on nitrogen and water dynamicsen
dc.typeAbstracten
dc.type.dcmitypeTexten

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