TY - JOUR ID - 983 TI - Spatio-temporal variation of wheat and silage maize water requirement using CGMS model JO - International Journal of Plant Production JA - IJPP LA - en SN - 1735-6814 AU - Sargordi, F. AU - Farhadi Bansouleh, B. AU - Sharifi, M.A. AU - Van Keulen, H. AD - Academic member of water engineering department, Razi University, Kermanshah, Iran.PhD student, ITC faculty, University of Twente, the Netherlands. AD - Assistant professor, water engineering department, Razi University, Kermanshah, Iran AD - Associate professor, ITC faculty, University of Twente, the Netherlands AD - Professor, Plant Production Systems Group, Wageningen University, the Netherlands Y1 - 2012 PY - 2012 VL - 7 IS - 2 SP - 207 EP - 224 KW - Crop growth simulation KW - Spatial yield analysis KW - Potential yield KW - Waterlimited yield KW - water requirement KW - CGMS KW - WOFOST DO - 10.22069/ijpp.2012.983 N2 - The Crop Growth Monitoring System (CGMS) has been applied for spatial biophysical resource analysis of Borkhar & Meymeh district in Esfahan province, Iran. The potentially suitable area for agriculture in the district has been divided into 128 homogeneous land units in terms of soil (physical characteristics), weather and administrative unit. Crop parameters required in the WOFOST simulation model for winter wheat and silage maize, have been calibrated based on experimental data from the study area. The study area has been classified into three cropping calendar zones based on average annual temperature, altitude and latitude. For each zone, a sowing date has been defined for each crop as the starting point of crop growth simulation. Growth of these crops has been simulated for the potential situation in each land unit for 20 years of historical daily weather data. Daily potential evapotranspiration and irrigation requirements of each crop per land unit have been calculated in a postsimulation, on the basis of model outputs. Outputs of the model are crop yield (marketable yield and total biomass) and irrigation requirements per decade. Spatial and temporal variation in irrigation requirements has been analyzed. The temporal variation in crop water requirements is larger than the spati3al variation. UR - https://ijpp.gau.ac.ir/article_983.html L1 - https://ijpp.gau.ac.ir/article_983_0fd971e269e1ee0fae0ebeaddadd39b0.pdf ER -