University of Khartoum

Use of Aqua Crop Model in Water Management of Gezira Agricultural Scheme

Use of Aqua Crop Model in Water Management of Gezira Agricultural Scheme

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Title: Use of Aqua Crop Model in Water Management of Gezira Agricultural Scheme
Author: Elkhidir, Adil; Mohammed, Waleed
Abstract: Gezira scheme was established in 1925 and its total area has reached 2.1 million feddans. The general objective of this research is to study the improvement of water management of Gezira scheme considering a new approach. The specific objective is to simulate crop water productivity in Gezira scheme for Sorghum crop, using Aqua Crop model developed by FAO Field experiments have been carried out in study area (Abd Aziz Minor Canal) during summer season (2013-14). The monitored crop is Sorghum, with two farmers each has his own sowing date. The Aqua Crop model has shown very good predictions of yield & biomass, respectively, compared to actually measured weights of yield & biomass obtained from the two field experiments. The Aqua Crop model has been applied using 36 scenarios together with other two rainfed scenarios to study the influence of water stresses, different levels of soil fertilities, irrigation options and different effective rainfalls on biomass & yield of Sorghum crop. From the model applications, it has been concluded that; - Biomass & yield increased, respectively, when soil fertility level increased. - For 80% of the 36 scenarios biomass & yield increased, respectively, when actual effective rainfall increased.
URI: http://khartoumspace.uofk.edu/handle/123456789/19549
Date: 2016


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