Disclosing the Effect of Climatic Factors on the Growth and Yield of Corn in Kermanshah Province

The goal of this research is the determining of planting date and providing agricultural calendar for corn in Kermanshah province using climatic elements of temperature and rain fall. so, at first, long term  climatic statistics are collected from 2001 to 2011  and then  considered to temperature and rain fall parameters like  absolute maximum and minimum  in region during growth period, planting  date, germinating  date, flowering date, rape date,  rape period  and also harvesting date of corn. all of the required  statistics and information is derived from data base of meteorology organization  and information and statistics of agricultural research center  and using statistical methods and SPSS, Smada, Mini Tab, applications  used  for analyzing  and GIS for depicting maps, results show that determining of planting   and harvesting date  based on weather conditions  in Kermanshah province  during studied statistical period, best planting  date id ordibehesht 12th  and best harvesting date  based on planting  date is shahrivar 28th.