How to deal with grape phytotoxicity

First, we must pay attention to strengthening the management of fertilizer and water; second, we must leave the damaged leaves for a certain period of time. It takes about a month to produce a new side branch. The leaves of the new collateral can replace the diseased leaves for photosynthesis and alleviate the phytotoxicity.

After the grape is sprayed, it should be observed in the orchard at any time. If abnormal gardens and plants are found, spray the water to dilute the pesticide on the tree. If the pesticide or herbicide is sprayed on the ground, it should be rinsed with water to wash away the pesticide residues in the soil. For example, due to the phytotoxicity caused by the stone sulphur mixture, spray 400-500 times of vinegar on the basis of clean water. Use medicinal damage caused by improper dimethoate, spray 200 times vinegar sand solution 1-2 times. Due to the excessive use of organic phosphorus, the phytotoxicity caused by the group can spray 200 times borax solution 1-2 times 0.5-1% lime water, soap water and other solutions.