Estimation of Irrigation Water Requirement Using Cropwat 8.0 and Climwat Software in Case of Modjo , East Shewa, ETHIOPIA

Irrigation management plays a significant role in effectively and efficiently using the available water sources to meet the variation of cropping patterns. For the sake of facilitating the management practice, experimental data based on the irrigation management model can be applied to estimate the crop water requirement and increasing the ability of irrigation management. water demand has been increasing fastly as result an increment of the number of population and some improvement of the living standard of people, which makes the water shortage to be a serious problem. The main objective of paper is to apply the CROPWAT 8 irrigation water management model for the determination of crop water requirement. This irrigation water model for Windows is a computer software program for the analysis of the detail of crop water requirements and irrigation requirements on the basis of the input dated such as crop, soil and climate data