Simulation of Water Requirements and Irrigation Scheduling of Sorghum Crop
Journal Title: International Journal of Agriculture Innovations and Research - Year 2018, Vol 6, Issue 6
Abstract
Due to the over use of available water resources, it has become very important to define appropriate strategies for planning and management of irrigated farmland. In this research, sorghum crop rainfed region (Gadareef and Sennar) were chosen as the case study area for its special political and economic status and its severe water problem. To achieve effective planning, the information about crop water requirements, irrigation withdrawals, soil types and climatic conditions were obtained in the study area. The model, that calculates evapotranspiration and crop water requirements, allows the development of recommendations for improved irrigation practices, the planning of irrigation schedules under varying water supply conditions and yields reduction under various conditions. For the purpose of this paper, the model was run for the specific weather conditions from 2000 to 2010. Simulation results analysis suggests that areas, where the sorghum water requirements exceeds the water supply, by application of adequate irrigation scheduling the yield losses can be significantly reduced. Based on the water deficit analysis, recommended supplemental irrigation schedule was developed using CropWat model. Compared to the rainfed control, the two or three times of supplemental water irrigated to sorghum at the right time reduced the loss of yield, under different scenarios
Authors and Affiliations
Abbas E. Rahma, et al.
Keywords
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