Zinc is necessary for enzyme activities, production of growth hormones, insemination and fertility, as well as fruit formation. Zinc deficiency in plants can affect biological, metabolic, physiological processes, the formation of vital biological molecules such as sugars, protein and photosynthesis. disturbed and lead to leaf fall, delay in the timely opening of leaves and flowers, fruit fall and growth restriction, and the result of the above cases will be the weakening of the plant, jeopardizing the growth and lack of fertility of the plant. This element activates more It is one of 300 types of enzymes and plays a role in the structure of protective mechanisms.
Fertilizer containing zinc can be found in two forms: dry (ZnSo4H2o) containing 34% zinc and wet (ZnSo4 7H2o) containing 24% zinc.
Zinc deficiency in agriculture
More than half of the agricultural lands are deficient in zinc. And it causes a 50% decrease in performance.
The main reasons for zinc deficiency in agricultural soils:
1- The soil pH is high and calcareous
2- Abundant and excessive consumption of phosphate fertilizers
3- Existence of high concentrations of bicarbonate in irrigation water
4- Failure to use zinc fertilizer or zinc sulfate correctly
The importance of zinc in plants
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Zinc sulfate is used to prepare zinc fertilizer because it is soluble in water and can effectively regulate soil pH. This factor increases the amount of available zinc for the plant. It is important to note that soils that are deficient in zinc can be improved by using zinc sulfate fertilizer; It is natural that if agricultural products such as corn, wheat, barley, citrus, etc. are planted in these lands, their growth will be affected by the presence of zinc in the soil.
: Time and quantity of zinc sulfate fertilizer
This fertilizer can be used as foliar spraying, chalk fertilizer and strip application. Fertilizer spraying in the form of 5:1000, if done with urea and boric acid in autumn and early spring before the flowers open, is very effective in the formation and increase of fruiting.
How to use zinc sulfate
Trees: This fertilizer can be used for fertilizing trees in the middle part of the shade tree along with animal manure and sulfur. The amount of fertilizer used in each fertile tree is about 300 to 2000 grams.
Agricultural plants: Fertilizer is used in the amount of 60 to 80 kg per hectare under the soil. This fertilizer should be used together with other winter fertilizers when preparing the plant seed bed.
Foliar spraying method: The method of foliar spraying of this fertilizer is 3 to 5 per thousand in fruit trees and 3 to 4 per thousand in crops.
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