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dc.contributorFarahani, Hamiden_US
dc.contributorStednick, John D.en_US
dc.contributorBuchleiter, Gerald W.en_US
dc.contributorGreen, T.R.en_US
dc.creatorMcCutcheon, M.C.en_US
dc.date.accessioned2018-02-14T08:53:29Z
dc.date.available2018-02-14T08:53:29Z
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationM. C. McCutcheon, Hamid Farahani, John D. Stednick, Gerald W. Buchleiter, T. R. Green. (1/5/2006). Effect of Soil Water on Apparent Soil Electrical Conductivity and Texture Relationships in a Dryland Field. Biosystems Engineering, 94 (1), pp. 19-32.en_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/7812
dc.description.abstractPrecision agriculture relies on using advanced tools to map and subsequently manage the variability across the field. There is an emerging interest in mapping apparent soil electrical conductivity (ECa) as a surrogate spatial map for soil texture, providing the potential for ECa mapping as a practical tool to delineate soil-based management zones for variable rate application of agricultural inputs. Results from literature are mixed and inconsistent with the practical utility of ECa to map texture (or clay content) remaining elusive because of the complex interactions between ECa and soil transient properties. The objective of this study was to explore ECa relationships with soil properties and evaluate the usefulness of ECa mapping to infer soil texture as soil water content changed from one mapping date to the next. Measurements included multiple field-scale ECa mappings of a 110 ha dryland field of 12 alternating wheat and fallow strips from 2001 to 2003, complemented with extensive soil profile sampling (198 locations) and analysis. Soil ECa values changed across mapping dates and exhibited weak temporal associations. For instance, ECa values increased by three fold from 10 mS/ m in September 2001 (after wheat harvest) to 30mS/m in May 2003 (in the emerged wheat crop). Volumetric soil water content was the dominant factor affecting the spatial and temporal ECa variability, with other measured soil properties having nearly equal, but weak to moderate, correlations with ECa. For the dryland field examined herein and under relatively dry soil water contents, ECa maps represent overall soil variability with limited utility in providing zones of texture similarities for site-specific management.en_US
dc.formatPDFen_US
dc.languageenen_US
dc.publisherElsevieren_US
dc.sourceBiosystems Engineering;94,(2006) Pagination 19-32en_US
dc.subjectsoil electrical conductivityen_US
dc.subjectdrylanden_US
dc.titleEffect of Soil Water on Apparent Soil Electrical Conductivity and Texture Relationships in a Dryland Fielden_US
dc.typeJournal Articleen_US
dcterms.available2006-03-29en_US
dcterms.extent19-32en_US
dcterms.issued2006-05-01en_US
cg.subject.agrovocsoil wateren_US
cg.subject.agrovocsoil textureen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerColorado State University - COLOSTATEen_US
cg.contributor.centerUnited States Department of Agriculture, Agricultural Research Service - USDA-ARSen_US
cg.contributor.centerNorthern Colorado Water Conservancy District - NCWCDen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.date.embargo-end-date2106-03-29en_US
cg.contactHamid.Farahani@gnb.usda.goven_US
cg.identifier.doihttps://dx.doi.org/10.1016/j.biosystemseng.2006.01.002en_US
cg.isijournalISI Journalen_US
dc.identifier.statusLimited accessen_US
mel.impact-factor2.044en_US
cg.issn1537-5110en_US
cg.journalBiosystems Engineeringen_US
cg.issue1en_US
cg.volume94en_US


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