First, the symptoms of drug injury 1. Spots. Spots occur mainly on the leaves of vegetables, and sometimes on the stem or fruit epidermis. Brown spots, yellow spots, and net spots are common. 2. Yellow. Yellowing occurs mainly in the stems and leaves of vegetables, mostly in leaves. The main cause of yellowing is the destruction of chlorophyll in the leaves by the pesticides, yellowing of the light leaves, and yellowing of the whole plants. 3. Malformation. The malformations caused by phytotoxicity can occur in the stems, leaves, fruits and roots of vegetables, such as leaf curling, clumping, rooting, and fruit deformities. 4. wither. Symptoms caused by phytotoxicity are often symptoms of the whole plant, which is generally caused by improper application of herbicides. There is no episode of wilting caused by phytotoxicity, and the development process is relatively slow. After the first yellowing, the seedlings are killed and the transduced tissue is not browned. 5. Growth stagnates. Symptoms of slow growth of plants caused by phytotoxicity are often associated with spots or other symptoms of phytotoxicity compared with those caused by physiological diseases. Symptoms of poisoned hair are often poor root growth and lack of symptoms. It appears as yellow or dark green leaves. Second, remedial measures 1. Spray with water. If the leaves and plants cause phytotoxicity due to spraying liquid, they can quickly spray the leaves with plenty of clean water when the early liquid has not been fully penetrated or absorbed, and wash it repeatedly 3-4 times to flush out the liquid on the surface of the plants. And with the cultivator loose soil, promote root development, so that plants quickly return to normal growth. 2. Topdressing available fertilizers. After the occurrence of phytotoxicity, timely watering and topdressing urea and other available fertilizers. In addition, 1%-2% urea solution or 0.3% potassium dihydrogen phosphate solution should be sprayed on the leaves to promote plant growth and increase their resistance to phytotoxicity. 3. Use antidote or plant growth regulator. According to the nature of pesticides that cause phytotoxicity, the use of drugs that are contrary to their nature is neutralized. For example, after applying excessive amount of copper sulfate, 0.5% of quicklime water can be sprayed. Foliage No. 1 growth conditioner can also be used for foliar spray to ease the injury. 4. irrigation field. For fields with excessive soil application, irrigation should be performed as soon as possible, so that a large number of drugs will be discharged outside the field with water to reduce the damage. 5. Remove the victim. The fruits, branches and leaves of the vegetables are removed in time to prevent further propagation and infiltration of the chemicals in the plants. Dry Vegetables,Freeze Dried Vegetables,Dehydrated Veggies,Freeze Dried Veggies ZHONGSHAN G.H.L. TRADING CO., LTD. , https://www.ghltrade.com