Drought of Kurdistan province and their impact on the relative performance of rain fed wheat

In order to assess the drought situation in Kurdistan and its effect on performance of rain fed wheat, We have received monthly precipitation data for 10 meteorological stations from Meteorology organization and also data about the cultivation, production and performance of rain fed wheat from Agricultural Organization during (1982-2010) period. In order to analyze the drought was used Standardized Precipitation Index (SPI) and percent of normal precipitation (PNPI) Index. The results showed that the normal precipitation (PNPI) Index, the most droughts with 8 cases in Bane station and the lowest number of droughts that occurred in Bijar station with 5 cases. Also that The Standardized Precipitation Index, the most droughts occurred in Marivan station with 10 cases and the lowest number of droughts occurred in Bijar station with 7 cases. In order to analysis the effects of meteorological drought on agriculture, we have used the relative performance of rain fed wheat index. Also the results show the correlation between rainfall and performance of rain fed wheat is direct and significant and the standardized precipitation index has same direction trend with standardization of the relative performance of rain fed wheat index.