yield, yield gap and identify the spatial variation of corn yield, crop simulation model and Geographic Information System (GIS) were employed across Khorasan provinces (Northern, Razavi (Central), Southern) in northeast of Iran. The CSM-CERES-Corn model...

Process-based crop simulation models require employment of new knowledge for continuous improvement. To simulate growth and
development of different genotypes of a given crop, most models use empirical relationships or parameters defined...