Grape disease occurs
Symptoms The manifestations of phytotoxicity mainly occur on leaves and fruits, and sometimes on shoots. The specific drug injury symptoms vary greatly depending on the type of the drug. The phytotoxicity of burn-type medicaments mainly manifests itself as spotting or death of local medicines; the phytotoxicity of hormone-type medicaments mainly manifests as inhibition or stimulation of local growth, and even leaves and fruit drop. From the point of common performance in production, there are various types such as discoloration, dead spots, burnt spots, deformity, aging, and shedding. Causes of phytotoxicity mainly due to improper use of pharmaceutical agents, belonging to the category of physiological diseases. Such as the use of high concentrations, mixing is unreasonable, spraying is not safe, inadequate protection and so on. Rainy and wet, high temperature and drought can induce phytotoxicity, and debilitating trees often aggravate phytotoxicity. The first means of prevention and control technology to mitigate injury is to spray the injured plants with clean water as soon as possible after spraying, and to reduce the occurrence of phytotoxicity by reducing the drug concentration. If pesticides, herbicides, etc. are sprayed on the ground, they should be rinsed with water and washed away from pesticide residue in the soil. As a result of the phytotoxicity produced by lime sulfur, spray 400 to 500 times vinegar on the basis of clean water. The use of dimethoate improperly produced phytotoxicity, spray 200 times vinegar sand 1 to 2 times. Due to the excessive use of organophosphorus, the phytotoxicity generated by the crowd can be sprayed 200 times borax solution 1 to 2 times 0.5 to 1% lime water, soapy water and other solutions. Pay attention to the rational and correct use of pesticides and try to use safe pesticides. Be sure to use the concentration according to the instructions. Do not increase the concentration arbitrarily. Avoid using drugs when the temperature is too high. Do not use drugs immediately after dew or rain. Wettable powder pesticides must be diluted evenly. When adding chemical fertilizers (foliar fertilizers), it is necessary to dissolve the chemical fertilizers before adding them into the liquid, and then stir and spray evenly. At the same time, we must strengthen the cultivation and management, cultivate trees, and improve the tree's resistance to drugs. Omega-3 Fish Oil,Fish Oil 10/50 Tg,Omega 3 Fish Oil,10/50 Tg Fish Oil ZHOUSHAN SINOMEGA BIOTECH ENGINEERING CO.,LTD , https://www.sinomegabiotech.com