Abstract
Crop water requirement or crop evapotranspiration is a vital parameter for irrigation, and it is necessary to determine the quantity of water to be applied for irrigation and develop an effective irrigation schedule. CROPWAT 8.0, decision-support computer software developed by the United Nations Food Agriculture Organization, is used to calculate crop water requirements. In this paper, the CROPWAT 8.0 model was used to estimate the water requirements of tomato crops in Afgoye. The model estimated that the reference evapotranspiration throughout the year reaches 1927.6 mm and the daily reference evapotranspiration is 5.29 mm. The total annual rainfall reaches 584.0 mm with an effective rainfall of 511.1 mm. The total crop evapotranspiration during the growing period was estimated at 678.2 mm and the total irrigation amount was calculated as 452.3 mm with an effective rainfall of 230.6 mm. During the growing period, the net and gross irrigation reaches 392.9 and 561.3 mm respectively. Field experiments should be conducted in the same season and cropping patterns to validate the accuracy of the crop water requirement prediction.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
