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dc.contributorGerakis, Argyriosen_US
dc.contributorRitchie, Joe T.en_US
dc.contributorK. Friesen, Dennisen_US
dc.contributorRyan, Johnen_US
dc.creatorDaroub, Samira H.en_US
dc.date2003-06-01en_US
dc.date.accessioned2020-12-03T23:23:00Z
dc.date.available2020-12-03T23:23:00Z
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationSamira H. Daroub, Argyrios Gerakis, Joe T. Ritchie, Dennis K. Friesen, John Ryan. (1/6/2003). Development of a soil-plant phosphorus simulation model for calcareous and weathered tropical soils. Agricultural Systems, 76 (3), pp. 1157-1181.en_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/12167
dc.description.abstractPhosphorus (P) is a limiting nutrient affecting crop yields in many regions of the world, in particular in areas with highly weathered acid soils and calcareous alkaline soils. Given the many factors associated with P behavior in a range of soil environments, there is a need to go beyond site-specific situations. The use of crop simulation models is a valuable tool to evaluate the efficacy of applying P fertilizers under different soil, management and climatic conditions. A computer model was developed to simulate P in the soil–plant system adapted to soils with high P limitations. The soil P module is operated with two comprehensive crop simulation models (CERES and CROPGRO) within the DSSAT software. The P module comprises inorganic and organic P pools estimated from measured P fractionation data and works on a daily time step. The rate constants for P movement between the pools follow first order kinetics. The P module was calibrated and tested using three data sets from Colombia, Syria, and Tanzania. The limited testing showed that the P module simulated accurately grain yield and P uptake by wheat grown under semi-arid conditions. The wheat crop responded little to fertilization although measured Olsen P was as low as 2.6 mg kg−1. The P module overestimated P uptake for both soybean and bean crops grown in acidic soils, but predicted with a good degree of accuracy labile P in the soil and P uptake for maize grown under the same acidic conditions. Testing with more data sets is needed to improve model predictions.en_US
dc.formatPDFen_US
dc.languageenen_US
dc.publisherElsevieren_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceAgricultural Systems;76,(2003) Pagination 1157,1181en_US
dc.subjectcrop simulation modelsen_US
dc.subjectcrop modelsen_US
dc.subjectsoil modelsen_US
dc.subjecttropical acid soilsen_US
dc.subjectsemi-arid soilsen_US
dc.subjectphosphorus simulationen_US
dc.subjectphosphorus availability in acid tropical soilsen_US
dc.subjectphosphorus availability in alkaline semi-arid soilsen_US
dc.titleDevelopment of a soil-plant phosphorus simulation model for calcareous and weathered tropical soilsen_US
dc.typeJournal Articleen_US
cg.subject.agrovoclegumesen_US
cg.subject.agrovoccerealsen_US
cg.subject.agrovocphosphorusen_US
cg.contributor.centerMichigan State University - MSUen_US
cg.contributor.centerInternational Maize and Wheat Improvement Center - CIMMYTen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_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-dateTimelessen_US
cg.coverage.regionGlobalen_US
cg.contactsdaroub@mail.ifas.ufl.eduen_US
cg.identifier.doihttps://dx.doi.org/10.1016/S0308-521X(02)00082-3en_US
dc.identifier.statusTimeless limited accessen_US
mel.impact-factor4.212en_US


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