First, do not use sewage to dispense drugs: there are many impurities in the sewage, it is easy to block the nozzle with its medicine, and it can also destroy the suspension of the drug and produce precipitation.
Second, do not use well water to dispense medicine: well water contains more minerals. When these minerals are mixed with pesticides, they are prone to chemical action, forming precipitates and reducing the efficacy.
Third, do not apply pesticides in the rainy days and the hot sun: the wind spray will make the pesticide powder and liquid medicine drift; in the rainy days, the powder, the liquid will be washed away to reduce the efficacy; under the scorching sun, the plant metabolism is strong, the leaves Stomatal expansion, prone to phytotoxicity. The best spraying time: 8-10 am, 3-6 pm.
4. Do not abuse pesticides: It is necessary to use the corresponding pesticides according to the type of crops, the objects of control and the performance of the medicaments, and truly correspond to the medicines. The abuse of pesticides often causes phytotoxicity.
Fifth, do not use a single drug: long-term use of a drug, easy to make pests resistant, reduce control effects.
6. Do not spray before harvesting: the residual period of high-toxic pesticides is about 60 days; the residual period of high-efficiency and low-toxic pesticides is about 15 days. Spraying before harvesting is easy to cause food poisoning.
Second, do not use well water to dispense medicine: well water contains more minerals. When these minerals are mixed with pesticides, they are prone to chemical action, forming precipitates and reducing the efficacy.
Third, do not apply pesticides in the rainy days and the hot sun: the wind spray will make the pesticide powder and liquid medicine drift; in the rainy days, the powder, the liquid will be washed away to reduce the efficacy; under the scorching sun, the plant metabolism is strong, the leaves Stomatal expansion, prone to phytotoxicity. The best spraying time: 8-10 am, 3-6 pm.
4. Do not abuse pesticides: It is necessary to use the corresponding pesticides according to the type of crops, the objects of control and the performance of the medicaments, and truly correspond to the medicines. The abuse of pesticides often causes phytotoxicity.
Fifth, do not use a single drug: long-term use of a drug, easy to make pests resistant, reduce control effects.
6. Do not spray before harvesting: the residual period of high-toxic pesticides is about 60 days; the residual period of high-efficiency and low-toxic pesticides is about 15 days. Spraying before harvesting is easy to cause food poisoning.
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