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How to make up the injury in the orchard
1. Spray water on the tree. If phytotoxicity is detected early, immediately rinse the affected plants with water to dilute and remove pesticides from the leaves and branches, reducing the amount of harmful chemicals absorbed by the tree. This helps minimize further damage and supports the plant's recovery.
2. Apply a neutralizing spray. For leaves showing symptoms of pesticide burn, use a 3000-fold dilution of 50% humic acid (dissolved in a small amount of water) for foliar application. After 3-5 days, the leaves should gradually regain their green color. If the damage was caused by copper sulfate in Bordeaux mixture, a 0.5-1% lime solution can be used for spraying. In cases of overuse of lime sulfur, after washing with water, apply a 500-fold diluted rice vinegar solution to help neutralize the effects.
3. Provide timely fertilization. Once fruit trees are affected by phytotoxicity, it’s essential to apply top-dressing fertilizer to help them recover quickly. For example, if the damage was caused by acidic pesticides, you can apply lime or a 1% bleaching powder solution as a foliar spray. For alkaline pesticide damage, use an acid-based fertilizer like ammonium sulfate. Regardless of the cause, spraying a mixture of 0.3% urea and 0.2% potassium dihydrogen phosphate every 15-17 days—up to two or three times—can significantly reduce the injury and support recovery.
4. Loosen the soil. After phytotoxicity occurs, it's important to cultivate the soil around the tree to a depth of 10-15 cm. This improves soil aeration, promotes root development, and enhances the tree’s ability to recover from the stress.
5. Prune moderately. After the tree has been damaged, perform light pruning to remove dead branches and leaves. This prevents the spread of dead tissue and reduces the risk of secondary infections caused by pathogens.
6. Show care and patience. Phytotoxicity can be stressful for both the tree and the grower. With proper care, time, and attention, most trees can bounce back. Be patient, stay consistent with your treatments, and monitor the tree’s progress closely. Sometimes, just giving the plant more love and support can make all the difference in its recovery.