Future Irrigation Water Requirements of the Main Crops Cultivated in the Niger River Basin

Precise agricultural predictions of climate change effects on crop water productivity are essential to ensure food security and alleviate scarcity. In this regard, the present study provides an overview future impacts irrigation products such as rice, millet, maize, cassava, sorghum, sugar cane. These crops some most-consumed foodstuffs in countries Niger River basin. This is realized throughout 2020 2080, three Global Climate Models (GCMs) (CSIRO, MIROC5, ECHAM. MPI-ESM-LR) have been used. The GCMs data provided by IPCC5 database. requirement for each was calculated using Smith’s CROPWAT approach. Penman–Monteith equation recommended FAO used calculate potential evapotranspiration. inter-annual results IWR, according set models selected, illustrate that largest quantities generally observed between January March, lowest most often seen July September. majority also a peak IWR March April. Sorghum millet consuming least amount irrigation; followed then rice corn, finally significant IWRs, which predicted, will be 16.3 mm/day (MIROC5 model, RCP 4.5) 45.9 (CSIRO 4.5), particularly Mali, Niger, Algeria, rarely Burkina-Faso RCP4.5 8.5). IWRs predicted from 1.29 33.4 4.5); they Guinea, southern Ivory Coast, center Nigeria, Cameroon. However, predict sugarcane plant with highest 0.25 (Benin 2020–2040) 25.66 (Chad 2060–2080). According models’ predictions, 0.20 2060) 19.37 With study, belonging basin can put place robust policies resources agriculture sectors, thus ensuring high-quality production staple crops, avoiding scarcity while facing negative change.