Mohammad Valipour
Land use policy and agricultural water management of the previous half of century in Africa
Islamic Azad University of Kermanshah|Islamic Azad University Kerman
paper examines land use policy agricultural water management africa 1962 2011 purpose data gathered food agriculture organization united nations fao world bank group using fao database ten indices selected permanent crops cultivated area rural population total population total economically active population agriculture total economically active population human development index national rainfall index mmyear value added gross domestic product agriculture irrigation water requirement mmyear percentage total cultivated area drained difference national rainfall index irrigation water requirement mmyear area equipped irrigation cultivated area land use policy index indices analyzed 53 countries study area land use policy index estimated two different formulas results show value relative error 20 addition average index calculated using various methods assess countries conditions agricultural water management ability irrigation drainage systems studied using eight indices limited information indices surface irrigation sprinkler irrigation localized irrigation spate irrigation agricultural water withdrawal 10 km3year conservation agriculture area percentage cultivated area percentage area equipped irrigation salinized area waterlogged irrigation finally tendency farmers use irrigation systems cultivated crops presented results show africa needs governments policy encourage farmers use irrigation systems raise cropping intensity irrigated area