Zinc in small amounts plays a very important role in plant growth and is present in the active site of many enzymes and is also a structural component of many enzymes. In general, protein production, regulation of hormone activity and energy production in plants are affected by the element zinc, and due to the immobility of this element in the plant, its deficiency symptoms are first observed in young leaves and tissues. The most important symptoms of zinc deficiency include shortening of the plant and shortening of the space between internodes, light green spots between young veins, small leaves and white lines on both sides of the middle leaf vein, especially in corn and grain sorghum. Is. Also, the presence of free amino acids in this compound during foliar application causes the pores to open (due to the acidification of the leaf surface environment) and as a result, the absorption of elements increases and ultimately increases the yield of this fertilizer.