Nutrient removal by prairie filter strips in agricultural landscapes

dc.contributor.author Zhou, Xiaobo
dc.contributor.author Helmers, Matthew
dc.contributor.author Asbjornsen, Heidi
dc.contributor.author Kolka, Randall
dc.contributor.author Tomer, Mark
dc.contributor.author Cruse, Richard
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-14T16:21:20.000
dc.date.accessioned 2020-06-29T22:41:09Z
dc.date.available 2020-06-29T22:41:09Z
dc.date.embargo 2014-09-22
dc.date.issued 2014-01-01
dc.description.abstract <p><p id="x-x-p-2">Nitrogen (N) and phosphorus (P) from agricultural landscapes have been identified as primary sources of excess nutrients in aquatic systems. The main objective of this study was to evaluate the effectiveness of prairie filter strips (PFS) in removing nutrients from cropland runoff in 12 small watersheds in central Iowa. Four treatments with PFS of different spatial coverage and distribution (No-PFS, 10% PFS, 10% PFS with strips, and 20% PFS with strips) were arranged in a balanced incomplete block design across four blocks in 2007. A no-tillage two-year corn (<em>Zea mays</em> L.) –soybean (<em>Glycine max</em> [L.] Merr.) rotation was grown in row-cropped areas beginning in 2007. Runoff was monitored by H flumes, and runoff water samples were collected during the growing seasons to determine concentrations of nitrate-nitrogen (NO<sub>3</sub>-N), total nitrogen (TN) and total phosphorus (TP) through 2011. Overall, the presence of PFS reduced mean annual NO<sub>3</sub>-N, TN, and TP concentrations by 35%, 73%, and 82%, respectively, and reduced annual NO<sub>3</sub>-N, TN, and TP losses by 67%, 84%, and 90%, respectively. However, the amount and distribution of PFS had no significant impact on runoff and nutrient yields. The findings suggest that utilization of PFS at the footslope position of annual row crop systems provides an effective approach to reducing nutrient loss in runoff from small agricultural watersheds.</p>
dc.description.comments <p>This article is from <em>Journal of Soil and Water Conservation</em> 69 (2014): 54–64, doi:<a href="http://dx.doi.org/10.2489/jswc.69.1.54" target="_blank">10.2489/jswc.69.1.54</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/596/
dc.identifier.articleid 1881
dc.identifier.contextkey 6144337
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/596
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1379
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/596/2014_Zhou_NutrientRemoval.pdf|||Sat Jan 15 01:04:20 UTC 2022
dc.source.uri 10.2489/jswc.69.1.54
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 Water Resource Management
dc.subject.keywords Agronomy
dc.title Nutrient removal by prairie filter strips in agricultural landscapes
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 26a812e6-e6de-44ff-b7ea-d2459ae1903c
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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