FRESENIUS ENVIRONMENTAL BULLETIN, cilt.29, sa.12A, ss.11565-11572, 2020 (SCI-Expanded)
Millions of people living in Chad are affected by food insecurity, malnutrition and water scarcity. For this reason, diversification of agricultural cultivation and existing water should be used more efficiently. Irrigation is one of the most important cultural practices in agricultural cultivation. Determination of the evapotranspiration values of crops is important in irrigation system planning and irrigation scheduling. Estimation of evapotranspiration with meteorological data is the most widely used method. However, in the least developed countries such as Chad, climate data is not always available. For this reason, in this study, it was aimed to create temporal and spatial maps in order to determine reference evapotranspiration values, which is an important parameter in estimating crop evapotranspiration values, more easily. These maps showed that the reference evapotranspiration increases from the Sudanese savannah zone to Sahara (desert) zone. It is thought that temporal and spatial maps will be beneficial for regional farmers as diversification of agricultural production and the use of irrigation systems are expected to increase in the future.