Use pesticides in summer should pay attention
First, we must pay attention to the rational use of pesticides
1, the right medicine. There are many varieties of pesticides and their characteristics are different. The most suitable pesticides should be selected for the control subjects.
2, timely medication, medication time is right, control effect is ideal. Such as protective fungicides must be used before the onset or early onset of the disease, herbicides should be applied correctly, such as pre-emergence application and stem and leaf treatment.
3, strictly control the amount of application. Any pesticide should be used in accordance with the recommended dosage. Any increase or decrease can easily cause crop damage or influence.
4, the application should be uniform and can not be re-spray or spray, in order to ensure the safety of crops, effective against diseases and weeds.
5, rational mix of pesticides. After mixing, the toxicity to humans and animals cannot be increased, chemical changes between active ingredients cannot occur, and the cost of medication cannot be increased.
6, to safety application, disable highly toxic pesticides. Pharmaceuticals and pesticides should be applied to prevent pesticides from corroding the skin. It is prohibited to spray pesticides at high temperatures during the summer noon. The continuous application time should not be too long. Keep the liquid at the spraying site to prevent poisoning of humans and animals. In particular, biological pesticides, ultraviolet rays in the sun have a killing effect on spores, direct light irradiation for 30 minutes, spores can be about 50% of death, irradiation for 1 hour, the mortality rate of up to 80%. Therefore, the application of biological pesticides can be applied after 4 pm, cloudy days without moderate to heavy rain, and can be applied throughout the day.
Second, pay attention to problems and deal with them in time
1. When the drug efficacy is poor or phytotoxicity occurs, the drug should be promptly sent to the pesticide testing unit for inspection. If it is unqualified or inferior, it can go to the industrial and commercial, consumer association, and technical supervision departments to lodge a complaint or go to court.
2, timely remedy of injury occurred. The first is fertilization remediation, which produces phytotoxicity on the leaf surface, such as drug spots, keels, or yellowing of the leaves. Fertilizer can be used to reduce the degree of injury. Commonly used foliar dressings are used to remedy the situation. The second is to suppress or disturb plants. Herbicides that grow are harmful and can be released by spraying with gibberellin.
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