Soil water and crop water use with crop rotations and cultural practices

dc.contributor.author Sainju, Upendra
dc.contributor.author Lenssen, Andrew
dc.contributor.author Allen, Brett
dc.contributor.author Jabro, Jalal
dc.contributor.author Stevens, William
dc.contributor.author Iversen, William
dc.contributor.department Agronomy
dc.date 2020-06-26T12:37:53.000
dc.date.accessioned 2020-06-29T23:06:57Z
dc.date.available 2020-06-29T23:06:57Z
dc.date.issued 2020-01-01
dc.description.abstract <p>Limited and erratic precipitation in arid and semiarid regions can affect soil water storage, water use, and dryland crop performance. Our objective was to examine soil water content, crop yield, and water‐use efficiency (WUE) with crop rotations and cultural practices for 6 yr in the northern Great Plains. Crop rotations were durum wheat (or durum) (<em>Triticum turgidum</em> L.)−durum−canola (<em>Brassica napus</em> L.)−pea (<em>Pisum sativum</em> L.) (DDCP), durum−durum−flax (<em>Linum usitatissimum</em> L.)−pea (DDFP), durum−canola−durum−pea (DCDP), and durum−flax−durum−pea (DFDP). A continuous durum (CD) was also included for comparison. Cultural practices were traditional (a combination of conventional tillage, recommended seeding rate, broadcast N fertilization, and reduced stubble height) and improved (a combination of no‐tillage, increased seeding rate, banded N fertilization, and increased stubble height) practices. Pre‐plant and postharvest soil water contents at the 0‐ to 122‐cm depth were 19−39 mm lower with DDFP than other crop rotations. Pre‐plant soil water was 21−39 mm greater in the improved than the traditional cultural practice in 3 out of 6 yr. Annualized grain yield was 207−370 kg ha−1 lower with DDFP than CD and DCDP. Overall water use and WUE (yield/water use) for the rotation system were not affected by treatments, but varied for each crop as the growing season precipitation (GSP) increased. Pre‐plant and postharvest soil water, water use, grain yield, and WUE for each crop in the rotation varied with treatments and years. Alternate‐year rotations and CD can enhance dryland soil water storage and crop yield compared to stacked rotations.</p>
dc.description.comments <p>This article is published as Sainju, Upendra M., Andrew W. Lenssen, Brett L. Allen, Jalal D. Jabro, William B. Stevens, and William M. Iversen. "Soil water and crop water use with crop rotations and cultural practices." <em>Agronomy Journal</em> 112 (2020): 3306-3321. doi: <a href="https://doi.org/10.1002/agj2.20332">10.1002/agj2.20332</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/agron_pubs/663/
dc.identifier.articleid 1712
dc.identifier.contextkey 18266248
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/663
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/5038
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/663/2020_Lenssen_SoilWater.pdf|||Sat Jan 15 01:26:01 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/663/2020_Lenssen_SoilWaterManuscript.pdf|||Fri Jun 26 12:37:48 UTC 2020
dc.source.uri 10.1002/agj2.20332
dc.subject.disciplines Agriculture
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Hydrology
dc.subject.disciplines Soil Science
dc.title Soil water and crop water use with crop rotations and cultural practices
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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