Show simple item record

dc.contributor.authorJohn, Andrew A.
dc.contributor.authorJones, Clain A.
dc.contributor.authorEwing, Stephanie A.
dc.contributor.authorSigler, Adam
dc.contributor.authorBekkerman, Anton
dc.contributor.authorMiller, Perry R.
dc.date.accessioned2018-09-10T22:22:57Z
dc.date.available2018-09-10T22:22:57Z
dc.date.issued2017-05
dc.identifier.citationJohn, A. A., Jones, C. A., Ewing, S. A., Sigler, W. A., Bekkerman, A., & Miller, P. R. (2017). Fallow replacement and alternative nitrogen management for reducing nitrate leaching in a semiarid region. Nutrient Cycling in Agroecosystems, 108(3), 279–296. doi:10.1007/s10705-017-9855-9en_US
dc.identifier.issn1385-1314
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/14771
dc.description.abstractNitrate (NO3 −) leaching into groundwater is a growing global concern for health, environmental, and economic reasons, yet little is known about the effects of agricultural management practices on the magnitude of leaching, especially in dryland semiarid regions. Groundwater nitrate–nitrogen (nitrate–N) concentrations above the drinking water standard of 10 mg L−1 are common in the Judith River Watershed (JRW) of semiarid central Montana. A 2-year study conducted on commercial farms in the JRW compared nitrate leaching rates across three alternative management practices (AMP: pea, controlled release urea, split application of N) and three grower standard practices (GSP: summer fallow, conventional urea, single application of urea). Crop biomass and soil were collected at ten sampling locations on each side of a management interface separating each AMP from its corresponding GSP. A nitrogen (N) mass balance approach was used to estimate the amount of nitrate leached annually. In 2013, less nitrate leached the year after the pea AMP (18 ± 2.5 kg N ha−1) than the year after the fallow GSP (54 ± 3.6 kg N ha−1), whereas the two AMP fertilizer treatments had no effect on nitrate leaching compared to GSPs. In 2014, leaching rates did not differ between each AMP and its corresponding GSP. The results suggest that replacing fallow with pea has the greatest potential to reduce nitrate leaching. Future leaching research should likely focus on practices that decrease deep percolation, such as fallow replacement with annual or perennial crops, more than on N fertilizer practices.en_US
dc.language.isoenen_US
dc.rightsCC BY, This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcodeen_US
dc.titleFallow replacement and nitrogen management for reducing nitrate leaching in a semi-arid regionen_US
dc.typeArticleen_US
mus.citation.extentfirstpage279en_US
mus.citation.extentlastpage296en_US
mus.citation.issue3en_US
mus.citation.journaltitleNutrient Cycling in Agroecosystemsen_US
mus.citation.volume108en_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.identifier.doi10.1007/s10705-017-9855-9en_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage5en_US
mus.contributor.orcidMiller, Perry R.|0000-0003-4719-2137en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

CC BY, This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.
Except where otherwise noted, this item's license is described as CC BY, This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.