In recent years, the application area and application amount of herbicides have increased year by year, saving time for farmers to control wild and weeds. However, due to human factors, improper application of herbicides has also adversely affected production.
1. Improper storage, blind use. Due to the improper storage of herbicides, resulting in peeling off of labels or corrosion of labels, it is impossible to see clearly whether the herbicides are used as insecticides, fungicides, or not according to the labeling instructions of herbicides, resulting in phytotoxicity. Preventive measures: Keep the herbicide properly and prevent the label from falling off. If the label is found to be missing, a new label should be immediately affixed to indicate the name of the herbicide and the method of application.
2. Too much medication, too much concentration. Herbicides are applied more strictly than insecticides and fungicides. Each herbicide has a prescribed amount. For example, if the amount of superstars is too large, it can cause phytotoxicity to wheat. Prevention methods: Strictly control the amount and concentration of herbicides.
3. Improper use of medication. Inappropriate herbicides can cause phytotoxicity. For example, when many herbicides are applied, they are contaminated with seeds and are likely to cause phytotoxicity. In the case of strong winds that are adjacent to sensitive crops, herbicides are sprayed, and a large amount of dewdrops are transported on sensitive crops to cause phytotoxicity. Preventive methods: According to weeds, herbicides and environmental conditions, choose different methods of application, and master the technical points of safe and efficient application of herbicides.
4. Blindly mix pesticides. The combination of herbicides can improve the weeding effect, cure disease, insects and grass, save medications, save labor, save time, and save money. However, if blindly mixed, it will not only have no synergistic effect, but will reduce the efficacy of the drug and cause phytotoxicity. Preventive measures: The use of herbicides is prohibited. Mixed pesticides should be mixed with observation, efficacy, and phytotoxicity tests. According to experiments, the common varieties that can reduce the efficacy after mixed use, and the emergence of phytotoxicity are: enemy earthworms and organophosphorus, carbamate pesticides; mixed use of grass and grams of Bentazone; mixed use of dimethyltetrachlorophosphate and acidic pesticides; Mixing steadily with bentazone can cause phytotoxicity.
1. Improper storage, blind use. Due to the improper storage of herbicides, resulting in peeling off of labels or corrosion of labels, it is impossible to see clearly whether the herbicides are used as insecticides, fungicides, or not according to the labeling instructions of herbicides, resulting in phytotoxicity. Preventive measures: Keep the herbicide properly and prevent the label from falling off. If the label is found to be missing, a new label should be immediately affixed to indicate the name of the herbicide and the method of application.
2. Too much medication, too much concentration. Herbicides are applied more strictly than insecticides and fungicides. Each herbicide has a prescribed amount. For example, if the amount of superstars is too large, it can cause phytotoxicity to wheat. Prevention methods: Strictly control the amount and concentration of herbicides.
3. Improper use of medication. Inappropriate herbicides can cause phytotoxicity. For example, when many herbicides are applied, they are contaminated with seeds and are likely to cause phytotoxicity. In the case of strong winds that are adjacent to sensitive crops, herbicides are sprayed, and a large amount of dewdrops are transported on sensitive crops to cause phytotoxicity. Preventive methods: According to weeds, herbicides and environmental conditions, choose different methods of application, and master the technical points of safe and efficient application of herbicides.
4. Blindly mix pesticides. The combination of herbicides can improve the weeding effect, cure disease, insects and grass, save medications, save labor, save time, and save money. However, if blindly mixed, it will not only have no synergistic effect, but will reduce the efficacy of the drug and cause phytotoxicity. Preventive measures: The use of herbicides is prohibited. Mixed pesticides should be mixed with observation, efficacy, and phytotoxicity tests. According to experiments, the common varieties that can reduce the efficacy after mixed use, and the emergence of phytotoxicity are: enemy earthworms and organophosphorus, carbamate pesticides; mixed use of grass and grams of Bentazone; mixed use of dimethyltetrachlorophosphate and acidic pesticides; Mixing steadily with bentazone can cause phytotoxicity.
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