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Iron citrate is effective in preventing yellow leaf disease in fruit trees
Yellow leaf disease in fruit trees is a physiological disease caused by iron deficiency in trees. If it is unfavorable, it will seriously affect tree vigor and fruit quality. Practice has proved that the method of spraying ferrous sulfate can easily cause phytotoxicity. Foliar spraying of citric acid and iron to prevent yellow leaf disease has the characteristics of safety and high efficiency, and will not cause phytotoxicity. The specific method is: ferric citrate 1000 times spraying on leaves, preferably in the sunny morning or evening, after 15 days, the leaves can turn green. Severe disease can be sprayed again about 7 days after the first spray.