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2, avoid using sewage medicine. The sewage contains a lot of impurities. After spraying, the spray will block the spray nozzle, and it will also destroy the stability of the liquid and reduce the efficacy.
3, avoid the rainy days and high temperature application. Spraying the wind will make the pesticides drift; when applied in rainy days, the liquid is washed away by rain, which is easy to reduce the effect; when applied under high temperature, it is prone to phytotoxicity and poisoning. Therefore, the best time to apply is: 8 am to 11 am, 4 pm to 6 pm. The weather is fine and the application is in the breeze.
4, avoid abuse of pesticides. According to the different types of crops, control objects and performance of pesticides, the corresponding pesticides should be used to achieve the right medicine. At the same time, it is contraindicated to increase the dosage of pesticides, which will increase the resistance of pests and reduce the control effect. At the same time, it is easy to produce phytotoxicity.
5, avoid spraying during the flowering period. Crops and fruit trees are applied at the flowering stage and are prone to phytotoxicity.
6, avoid applying before taking. Because pesticides can cause residues on crops, if pre-harvest application, drug residues can easily lead to poisoning after eating.
7, avoid a drug for use. The long-term use of one or one type of pesticide is easy to cause pests to produce resistance and reduce the control effect, so it should be used alternately.
Author: Zhang roll
Source: Agricultural Technology Center, Fengxiang County, Shaanxi Province
Taboo for pesticide use
1. Avoid using well water to dispense medicine. The well water contains more minerals such as calcium and magnesium, which are easy to react with the chemical solution to form a precipitate, thereby reducing the efficacy.
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