Swine Manure Rate, Timing, and Application Method Effects on Post-Harvest Soil Nutrients, Crop Yield, and Water Quality Implications in a Corn-Soybean Rotation

dc.contributor.author Kanwar, Rameshwar
dc.contributor.author Ahmed, Syed
dc.contributor.author Mickelson, Steven
dc.contributor.author Pederson, Carl
dc.contributor.author Mickelson, Steven
dc.contributor.author Baker, James
dc.contributor.author Kanwar, Rameshwar
dc.contributor.author Lorimor, Jeffery
dc.contributor.author Webber, David
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-13T13:46:25.000
dc.date.accessioned 2020-06-29T22:33:33Z
dc.date.available 2020-06-29T22:33:33Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2013
dc.date.embargo 2013-08-28
dc.date.issued 2013-07-01
dc.description.abstract <p>This report documents results from a six-year study (1996-2001) that evaluated effects of liquid swine manure application management practices on soil nutrients, organic matter, pH, crop yield; and also discussed water quality implications. Swine manure management practices included single-rate (SR) and double-rate (DR) nitrogen (N)-based application rates (168 and 336 kg N ha<sup>-1</sup>, respectively), three timings (fall injection [FI], winter broadcast [WB], and spring injection [SI]), and two methods (broadcast and injection) of liquid swine manure. Analysis of these practices involved comparing levels of residual soil total phosphorus (P) as Bray-1 available P (RSP), residual soil nitrate-N (RSN), percent organic matter (OM%), pH, carbon:nitrogen (C:N) ratio, and crop yields (kg ha<sup>-1</sup>) in a corn-soybean rotation. Results of this study indicated that long-term application of higher liquid swine manure rates during winter and spring application times resulted in significantly higher post-harvest accumulation of RSN and RSP in the soil profile, with no significant changes in soil OM%, pH, and C:N ratio. These results also showed that incorporation of swine manure during the spring application time produced significantly higher corn yields compared with fall and winter application times. Overall results suggest that while RSN and RSP content may be significantly higher from spring versus fall manure application times, N and P runoff losses and the potential threat to surface water quality may be substantially lower during spring and summer compared with fall and winter due to effects from crop nutrient uptake, microbial activity, leaching, and evapotranspiration during the growing season.</p>
dc.identifier archive/lib.dr.iastate.edu/abe_eng_conf/334/
dc.identifier.articleid 1329
dc.identifier.contextkey 4519922
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/334
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/355
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_conf/334/2013_AhmedSI_SwineManureRate.pdf|||Fri Jan 14 23:39:09 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Best management practices
dc.subject.keywords Corn-soybean rotation
dc.subject.keywords Cover crops
dc.subject.keywords Manure application
dc.subject.keywords Nitrogen
dc.subject.keywords Phosphorus
dc.subject.keywords Soil nutrient content
dc.subject.keywords Water quality implications
dc.title Swine Manure Rate, Timing, and Application Method Effects on Post-Harvest Soil Nutrients, Crop Yield, and Water Quality Implications in a Corn-Soybean Rotation
dc.type article
dc.type.genre conference
dspace.entity.type Publication
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relation.isAuthorOfPublication da46d2fe-a6a7-430e-bd46-3d57438b799f
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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