How to spray pesticides in summer? Nine major points of attention for spraying pesticides in hot and rainy weather
Summer is a rapid development period for all kinds of crops, and it is also a high incidence stage of pests and diseases. Therefore, prevention of pests and diseases is one of the farmer's work in the summer of the farmer's door. What are the key points for spraying pesticides in summer?
Do not use well water or sewage to prepare pesticides
The well water contains more minerals such as calcium and magnesium, which are easy to chemically react with the liquid to form sediments, thereby reducing the efficacy; the impurities in the sewage will destroy the stability of the liquid, on the other hand Impurities can also block the spray nozzle.
Pesticide "second dilution"
For the secondary dilution of pesticides, its main role is to improve the efficacy of drugs, and the safety drug use factor is high.
Do not spray under the hot weather and hot sun
Spraying the medicine will cause the liquid medicine (powder) to float; when it is applied in rainy days, the pesticide is washed away by rain and the effect is reduced. Application at high temperature is prone to crop phytotoxicity and human poisoning. Therefore, the best application time should be 8:00 to 11:00 in the sunny morning (after dew) and 4 to 6 in the afternoon. It can be applied throughout the day on a cloudy day.
Avoid abuse of pesticides
According to the crop type, the target of the control and the performance of the pesticide, the corresponding medicine should be used to ensure the right medicine. At the same time, do not blindly increase the dosage, which will increase the resistance of the pest and reduce the control effect, and it is also easy to produce phytotoxicity.
Suggestion: For this point, we must remind everyone that we must use it according to the requirements of the drug manual, because the series of labels are the results of rigorous tests, if you want to try its effect on other objects, you can take Small area test, if successful, then use on a large area.
Take care when spraying
The crops are in the flowering and young fruit stage, their tissues and organs are young, the resistance to stress is weak, and they are prone to phytotoxicity, which affects normal pollination during flowering.
Do not apply crops before harvesting
Because pesticides can cause residues on crops, the residual period of highly effective highly toxic pesticides is about 60 days, and the period of high-efficiency and low-toxic pesticides is about 15 days. If the drug is applied before the harvest (safe interval), the drug remains on the harvested organ and poisoning occurs after consumption.
Do not use a single drug for a long time
Long-term single use of a single type of pesticide, easy to cause pests to produce resistance and reduce the control effect, once the pests develop resistance, the consequences are unimaginable, advocated alternate medication.
Do not throw pesticide bottles and other packaging materials
After use, the pesticide packaging (residual small amount of pesticides) should be burned intensively to avoid polluting the environment and harming people, livestock and poultry.
Spray protection should be done well
If the clothes are contaminated with pesticides, immediately change the clothes and wash the skin with soapy water. Wear masks, rubber gloves, and appropriate clothing when applying to prevent stains on your skin and eyes. After the spraying, if you need to eat and drink, smoking, you should wash your hands, wash your face and rinse your mouth. Dispensing should be done in a safe place away from drinking water sources and settlements.
The above are some precautions for summer medication. Farmers must apply the medicine correctly. If the medication is not appropriate, it will not only prevent the pests and diseases, but also cause human or animal injury or environmental pollution.
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