ABSTRACT
Scarcity of water is one of the major factors responsible for suboptimal productivity and decline of citrus orchards in world. Deficit irrigation (DI) is recently proposed water saving techniques in different irrigated crops. Reducing irrigation water quantity to optimal level of crop water requirement in particular growth stages of the crop which is less sensitive to water deficit improves water use efficiency and quality of produces, without affecting the yield significantly [18]. Therefore, the correct application of DI requires the thorough understanding of the yield response of crops to irrigation [8].
