Crop Water Requirement for Bakrajo Area in Sulaimaniya Governorate
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In this research, Bakrajo land area in Sulaimniya governorate has been chosen because of its high agricultural potential. The main objectives are to determine the crop water required (C.W.R.) for Bakrajo area, and to characterize the selected area in Sulaimniya city with particular references to climate, geology, vegetation, soil, and crop rotation with its intensity. Full climatological data and weather variables are not available continuously, in this research, two methods that require minimum climatological data have been used, i.e. Hargreaves and Blaney-Criddle methods, in order to calculate the crop water requirements. The obtained result can be used in the design of the hydraulic structures waterway (Regulator, fall, and intake structure) and in defining the irrigation conveyance canal parameters. The procedure of calculation depends on the minimum climatological data especially minimum and maximum daily air temperature in order to obtain the average reference evapotranspiration (ETo). The results show a good accuracy when the mean average value of the two methods is compared with the other basic methods such as Penman equation.
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