Influence of Corn Stover Harvest on Soil Quality Assessments at Multiple Locations Across the U.S. Karlen, Douglas Jin, Virginia Ducey, Thomas Birrell, Stuart Varvel, Gary Johnson, Jane Baker, John Osborne, Shannon Novak, Jeff Adler, Paul Roth, Greg Birrell, Stuart
dc.contributor.department Agricultural and Biosystems Engineering 2018-02-14T16:15:23.000 2020-06-29T22:34:08Z 2020-06-29T22:34:08Z 2014-09-19 2012-10-01
dc.description.abstract <p>Corn (Zea mays L.) stover has been identified as a biofuel feedstock due to its abundance and a perception that the residues are unused trash material. However, corn stover and other plant residues play a role in maintaining soil quality (health) and enhancing productivity, thus use of this abundant material as feedstock must be balanced with the need to protect the vital soil resource. Plant residues provide physical protection against erosion by wind and water, contribute to soil structure, nutrient cycling, and help sustain the soil microbiota. Replicated plots were established on productive soils at several locations (IA, IN, MN, NE, PA, SD, and SC) and a multi-year study was carried out to determine the amount of corn stover that can be removed while maintaining the current level of soil quality for each soil. These sites represented a range of soil types and climatic conditions, and have been ongoing for and least five years with some much longer studies. All sites had at least three levels of stover harvest: grain only (control), maximum removal (90-100%) and a mid-range removal rate (~50%). Data from 4 sites are presented (IA, IN, MN, and NE). The Soil Management Assessment Framework (SMAF) was used to score and assess changes in selected soil quality indicators. Data shows that removal at the highest rates resulted in some loss in soil quality with respect to soil organic carbon and bulk density. These sites were converted to no-till when the experiments were initiated, thus SOC accrual because of the shift in tillage management appeared to balance any losses due to feedstock harvest.</p>
dc.description.comments <p>Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.</p>
dc.identifier archive/
dc.identifier.articleid 1409
dc.identifier.contextkey 6141641
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/407
dc.language.iso en
dc.source.bitstream archive/|||Sat Jan 15 00:08:39 UTC 2022
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agriculture
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Soil Science
dc.subject.keywords Soil organic carbon
dc.subject.keywords Bulk density
dc.subject.keywords Soil quality index
dc.title Influence of Corn Stover Harvest on Soil Quality Assessments at Multiple Locations Across the U.S.
dc.type article
dc.type.genre conference
dspace.entity.type Publication
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relation.isAuthorOfPublication 1fd6ff71-dbea-4ada-9267-f9ff2ce1caba
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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