Corn Stover Harvest, Tillage, and Cover Crop Effects on Soil Health Indicators

dc.contributor.author Obrycki, John
dc.contributor.author Karlen, Douglas
dc.contributor.author Birrell, Stuart
dc.contributor.author Cambardella, Cynthia
dc.contributor.author Kovar, John
dc.contributor.author Birrell, Stuart
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2019-12-06T14:41:48.000
dc.date.accessioned 2020-06-29T22:36:51Z
dc.date.available 2020-06-29T22:36:51Z
dc.date.issued 2018-08-02
dc.description.abstract <p>Monitoring soil health indicators (SHI) will help ensure that corn (<em>Zea mays</em> L.) stover harvest is sustainable. This study examines SHI changes after 5 yr of growing continuous corn with either chisel plow or no-tillage practices and harvesting 0, ∼35, or ∼60% of the stover. Two no-tillage treatments with a cereal rye (<em>Secale cereale</em> L.) cover crop and stover harvest rates of ∼35 or ∼60% were evaluated. All eight treatments were replicated four times in a randomized complete block design at an 11-ha site in Boone County, IA. Soil samples were collected following grain and stover harvest from 0- to 5- and 5- to 15-cm depth increments. Particulate organic matter C (POM-C) decreased when stover was removed or the soil was chisel plowed. No-till with 0% stover removal had 10 mg g<sup>–1</sup> POM-C in the 0- to 5-cm soil layer, which was 1.9-fold higher than in other treatments. Potentially mineralizable N (PMN) was greater under cover crop treatments. Average PMN values were 56.9 and 45.5 µg g<sup>–1</sup> PMN for no-till with cereal rye at 0- to 5- and 5- to 15-cm depths, respectively, compared with 17.5 and -3.7 µg g<sup>–1</sup> PMN for the same no-till treatments without cereal rye. Other soil properties did not respond to increasing levels of stover removal. At this location and at the studied removal rates, 5 yr of harvesting corn stover did not decrease soil health, but POM-C data suggest that changes may be occurring. Long-term monitoring should continue to assess corn stover harvest sustainability.</p>
dc.description.comments <p>This article is published as Obrycki, John F., Douglas L. Karlen, Cynthia A. Cambardella, John L. Kovar, and Stuart J. Birrell. "Corn Stover Harvest, Tillage, and Cover Crop Effects on Soil Health Indicators." <em>Soil Science Society of America Journal</em> 82, no. 4 (2018): 910-918. DOI: <a href="http://dx.doi.org/10.2136/sssaj2017.12.0415" target="_blank">10.2136/sssaj2017.12.0415</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/1099/
dc.identifier.articleid 2384
dc.identifier.contextkey 15933636
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/1099
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/799
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/1099/2018_BirrellStuart_CornStover.pdf|||Fri Jan 14 18:32:14 UTC 2022
dc.source.uri 10.2136/sssaj2017.12.0415
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.title Corn Stover Harvest, Tillage, and Cover Crop Effects on Soil Health Indicators
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 1fd6ff71-dbea-4ada-9267-f9ff2ce1caba
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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