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A: windy weather, easy poisoning: not medication, is easy to make when the wind is strong wind spraying powder or droplet flapping in the wind, not even attached to the surface of crops, it will float volt easily poisoned in personnel administration body.
Second, rainy weather pesticide loss: rainy days spraying rain can wash away the drug directly affect the results injustice will result in water pollution, seed dressing agents are generally used by small rain affected, because the EC pesticide can form a film on the surface of the crop, for there are some further rain erosion resistance, and resistant to dust and rain erosion of the most wettable powder.
Third, the hot weather medicine decomposition: high temperature will accelerate the decomposition of pesticides, chemical agent, the temperature should not fight drugs, because in hot weather crops metabolism exuberant, stomatal opening, the agent can easily enter the body and crop injury occurred.
Fourth, the low number of drug hot weather, heavy fog or dew more susceptible to high temperatures agent diluted with water to reduce the effects of drugs and cheaper, while the temperature is relatively low when the morning dew is dry, pest has not come out at this time spraying ineffective .
The best time to fight drugs: 8:00-10:00 in the morning, 5:00-7:00 in the afternoon. Avoid using well water to control the medicine. Because the well water contains calcium, magnesium and other minerals, it is easy to react with the chemical.
Source: Agricultural Technology Promotion Comprehensive Station of Liliu Township, Jinxi County, Jiangxi Province
The control effect of pesticides is often affected by the weather. I have been in contact with ordinary people for many years at the grassroots level and have searched for relevant information. I believe that the use of pesticides under the following four climatic conditions will affect the efficacy:
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