The effect of temperature and the amount of rain on some winter vegetable crops in Diyala governorate

Abstract

This study aims to investigate the effect of temperatures and the amount of rain fall on the cultivation of winter vegetable crops in Diyala Governorate during the period (2007 - 2014), due to its potential and production.                                              

Results show that temperature and amount of rain were suitable for some of places and unsuitable for others when using the correlation coefficient equation (Pearson). The study indicated that there was a positive relationship between temperature and each of the crops (Cauliflower, Lettuce, and Leeks), with a correlation coefficient (0.4, 0.59, 0.14), respectively. While there was a negative relationship between temperature and Carrots     with a correlation coefficient of 0.15.

For the correlation between the amount of rainfall and the winter vegetable crops, there was a positive relationship between the amount of rain and the yield (Carrots, Lettuce, Leeks) with a correlation coefficient of (0.14 -0.08-0.74), respectively. On the other hand, there was a negative relationship between the amount of rain and the Cauliflower yield with a correlation coefficient (- 0.10).                                 

Therefore, the loss of fallen rains should be compensated by providing additional irrigation water to prevent exposure the crop to damage, and thus increasing the agricultural production in Diyala Governorate