Citrus is grown through-out the world in tropical and subtropical climate, where there is suitable soil and sufficient moisture available to sustain the trees. But finest quality table citrus fruits are grown in non-humid irrigated sub-tropical areas. Foliar application of nutrients increase the efficiency, speed, cheapness, and fruit quality. Foliar nutrition is practiced by the fruit grower's worldwide. Two decisive factors in its favour are the reliability and rapidity of tree responses to foliar spray in different stage of plant growth and fruit quality and leaf nutrients.