Cover Crop Options and Mixes for Upper Midwest Corn–Soybean Systems

dc.contributor.author Appelgate, Seth
dc.contributor.author Lenssen, Andrew
dc.contributor.author Lenssen, Andrew
dc.contributor.author Wiedenhoeft, Mary
dc.contributor.author Kaspar, Thomas
dc.contributor.department Agronomy
dc.date 2018-02-19T06:57:35.000
dc.date.accessioned 2020-06-29T23:04:18Z
dc.date.available 2020-06-29T23:04:18Z
dc.date.issued 2017-01-01
dc.description.abstract <p>The use of cover crops can decrease soil erosion, weed density, and nitrate leaching while improving soil quality. We investigated nine cover crops, winter rye (<em>Secale cereale</em> L.), winter triticale (× <em>Triticosecale</em> Wittm. ex A. Camus), two winter canola (<em>Brassica napus</em> L.), winter camelina [<em>Camelina sativa</em> (L.) Crantz], spring barley (<em>Hordeum vulgare</em> L.), spring oat (<em>Avena sativa</em> L.), turnip (<em>B. rapa</em> L.), and hairy vetch (<em>Vicia villosa</em> Roth), as sole crops and selected binary and trinary mixtures and their influences on subsequent corn (<em>Zea mays</em> L.) productivity. A control treatment of no cover crop was included. Cover crops were no-till drilled immediately after soybean [<em>Glycine max</em> (L.) Merr] harvest. The study was a randomized complete block conducted in five environments over 2013–2014 and 2014–2015. Across environments, rye and rye mixtures produced the greatest spring aboveground biomass (758 kg ha<sup>–1</sup>), C, and N accumulation, had some of the lowest spring soil nitrate concentrations, and generally produced the lowest corn leaf chlorophyll. Rye accounted for more than 79% of spring aboveground biomass accumulation in rye mixtures. Triticale and camelina monoculture produced approximately 50% less biomass than rye or mixtures with rye. Cover crops in monoculture and mixtures did not influence surface soil temperature, soil P or K concentrations, weed density, weed community, or corn yield. Cover crops had limited influence on volumetric soil water content. Cover crop mixtures had no advantages over monocultures except for increasing fall stand density. Turnip and vetch had limited winter survival while barley, oat, and canola winterkilled.</p>
dc.description.comments <p>This article is published as Appelgate, Seth R., Andrew W. Lenssen, Mary H. Wiedenhoeft, and Thomas C. Kaspar. "Cover Crop Options and Mixes for Upper Midwest Corn–Soybean Systems." <em>Agronomy Journal</em> 109, no. 3 (2017): 968-984. doi: <a href="http://dx.doi.org/10.2134/agronj2016.08.0453" target="_blank">10.2134/agronj2016.08.0453</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/agron_pubs/324/
dc.identifier.articleid 1327
dc.identifier.contextkey 11312964
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/324
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/4670
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/324/2017_Lenssen_CoverCrop.pdf|||Fri Jan 14 23:35:57 UTC 2022
dc.source.uri 10.2134/agronj2016.08.0453
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Soil Science
dc.subject.disciplines Weed Science
dc.title Cover Crop Options and Mixes for Upper Midwest Corn–Soybean Systems
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 7f67ca95-722b-4dfd-8f49-56ff95980240
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a
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