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dc.contributor.authorTayfur, Gökmen
dc.contributor.authorTanji, Kenneth K.
dc.contributor.authorHouse, Brett
dc.contributor.authorRobinson, Frank
dc.contributor.authorTeuber, Larry
dc.contributor.authorKruse, Gordon
dc.date.accessioned2016-03-29T07:57:36Z
dc.date.available2016-03-29T07:57:36Z
dc.date.issued1995-11
dc.identifier.citationTayfur, G., Tanji, K., House, B., Robinson, F., Teuber, L., and Kruse, G. (1995). Modeling Deficit Irrigation in Alfalfa Production. Journal of Irrigation and Drainage Engineering, 121(6), 442-451. doi:10.1061/(ASCE)0733-9437(1995)121:6(442)en_US
dc.identifier.issn0733-9437
dc.identifier.urihttp://dx.doi.org/10.1061/(ASCE)0733-9437(1995)121:6(442)
dc.identifier.urihttp://hdl.handle.net/11147/4487
dc.description.abstractA conceptual agronomic model EPIC was extended to consider the effects of salinity in alfalfa production under optimal and water stress irrigation conditions. The extended model was calibrated and validated with observed lysimeter data. The model parameters that affected alfalfa yield and soil salinity the most were wilting point, field capacity, hydraulic conductivity, nitrate concentration, biomass energy ratio, seeding rate, average soil salinity EC e at which crop yield is reduced by 50% ( EC50 ), and initial soil gypsum concentration. The calibrated and validated model was then applied to an alfalfa deficit irrigation study. The four irrigation treatments included optimum check, minimum stress, short stress, and long stress, each of which produced differential alfalfa yields. The purpose of summer deficit irrigation was to ascertain how much agricultural water at what cost could be made available for urban water uses during water shortfalls. The results of model simulation were found to be satisfactory under all irrigation treatments though the model slightly overestimated the yields and underestimated the soil EC e at the end of short and long stress treatments. An economic component is included to determine the appropriate compensation for farmers undergoing a range of deficit irrigations.en_US
dc.language.isoengen_US
dc.publisherAmerican Society of Civil Engineersen_US
dc.relation.isversionof10.1061/(ASCE)0733-9437(1995)121:6(442)en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAgronomyen_US
dc.subjectBiomass energy ratioen_US
dc.subjectHydraulic conductivityen_US
dc.subjectNitratesen_US
dc.subjectSalinityen_US
dc.subjectIrrigationen_US
dc.titleModeling deficit irrigation in alfalfa productionen_US
dc.typearticleen_US
dc.contributor.authorIDTR2054en_US
dc.contributor.iztechauthorTayfur, Gökmen
dc.relation.journalJournal of Irrigation and Drainage Engineeringen_US
dc.contributor.departmentIzmir Institute of Technology. Civil Engineeringen_US
dc.identifier.volume121en_US
dc.identifier.issue6en_US
dc.identifier.startpage442en_US
dc.identifier.endpage451en_US
dc.identifier.wosWOS:A1995TF09800012
dc.identifier.scopusSCOPUS:2-s2.0-0029404455


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