Show simple item record

dc.contributorSayed, M. Atefen_US
dc.contributorOuda, Samihaen_US
dc.contributorKarrou, Mohammeden_US
dc.contributorOweis, Theiben_US
dc.contributorBruggeman, Adrianaen_US
dc.contributorFarahani, Hamiden_US
dc.contributorBenli, Bogachanen_US
dc.creatorKhalifa, Hamdy en_US
dc.identifier.citationHamdy  Khalifa, M. Atef Sayed, Samiha Ouda, Mohammed Karrou, Theib Oweis, Adriana Bruggeman, Hamid Farahani, Bogachan Benli. (31/12/2011). Systems approach to water productivity assessment using cropping system Models, in "Improving water and land productivities in irrigated systems. Community-Based Optimization of the Management of Scarce Water Resources in Agriculture in CWANA. Report no. 10". Aleppo, Syria: International Center for Agricultural Research in the Dry Areas (ICARDA).en_US
dc.description.abstractIrrigation management of crops in Egypt is characterized by the application of more water than the crops require. In fact, large amounts of water are supplied without any estimates of the soil water content at the root zone. The rationale for doing so is the assumption that more irrigation water means a greater yield. So, eliminating the use of this unnecessary irrigation water could help save the resource, provided that this can be done with low yield losses. The estimation of soil water reserves in the root zone area is essential for the best irrigation management. This management can be done by modeling water depletion from the root zone under the application of different amounts of irrigation water (Khalil et al., 2007). Models that simulate crop growth and water flow in the root zone can be powerful tools for extrapolating findings and conclusions from field studies to conditions not tested (Smith et al., 2000). Therefore, using these types of models to predict the effect of applying deficit irrigation on the yield of several crops could be an ultimate solution to conserving irrigation water. Deficit irrigation, while it may result in a yield reduction, in general increases water productivity and has the added benefit that the irrigation water saved can be used in new lands. However, testing these deficit irrigation practices in the field is expensive. Therefore, simulation models could partially substitute for experiments to test different deficit irrigation scenarios and be used to develop recommendations for the conservation of irrigation water and the minimizing of yield losses. Three models were selected for that purpose, CROPWAT, Yield-Stress and CropSyst. Our objective was to use these models to assess the effects of different deficit irrigation scenarios on the yields of crops planted in the field trials.en_US
dc.publisherInternational Center for Agricultural Research in the Dry Areas (ICARDA)en_US
dc.subjectwater use efficiencyen_US
dc.subjectnile valleyen_US
dc.subjectbenchmark sitesen_US
dc.titleSystems approach to water productivity assessment using cropping system Modelsen_US
dc.typeBook Chapteren_US
cg.creator.idOweis, Theib: 0000-0002-2003-4852en_US
cg.subject.agrovocfarming systemsen_US
cg.subject.agrovocimpact assessmenten_US
cg.subject.agrovocland useen_US
cg.subject.agrovocwater harvestingen_US
cg.contributor.centerNational Water Research Center - NWRCen_US
cg.contributor.centerAgricultural Research Center Egypt - ARC Egypten_US
cg.contributor.centerAgricultural Research Center, Soil, Water and Environment Research Institute - ARC - SWERIen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerThe Cyprus Institute - CYIen_US
cg.contributor.centerUnited States Department of Agriculture, Natural Resources Conservation Service - USDA - NRCS Raleighen_US
cg.contributor.crpCGIAR Research Program on Water, Land and Ecosystems - WLEen_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.coverage.regionNorthern Africaen_US
dc.identifier.statusOpen accessen_US

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

DSpace software copyright © 2002-2016  DuraSpace
MELSpace content providers and partners accept no liability to any consequence resulting from use of the content or data made available in this repository. Users of this content assume full responsibility for compliance with all relevant national or international regulations and legislation.
Theme by 
Atmire NV