* Uses:- 1- Zinc is one of the important microelements in plant nutrition and one of the immobile elements. 2- It is used because it dissolves quickly in water and thus is quickly absorbed into the plant due to its distinctive composition. 3- The zinc in this compound works to germinate pollen grains on the flower stigmas, which encourages the processes of pollination, fertilization, and setting in the flowers, thus increasing the yield. 4- Its ease of absorption and availability to plants helps it enter as an enzymatic companion in the transformation of the amino acid tryptophan. 5- It should not be mixed with phosphate fertilizers in high quantities, as it may stop the absorption of zinc into the soil as a result of the formation of poorly soluble compounds, and high phosphorus may reduce the concentration of zinc in the vegetative growth of trees. *Spray rate:- - Dosage: At a rate of 100 g/acre in the normal state of the elements in the soil and plants. - Dilution: at a rate of 100 grams / 300 liters of water per acre (depending on nutritional status and lack of elements).