Cotton Fuxia prevention
1. Rotate using medicines. The use of acetamiprid, imidacloprid, chlorpyrifos, etc., in the field, can be used interchangeably to reduce the possibility of drug resistance in locusts. Once maggots become resistant to a certain chemical, even if the number of drugs is increased, the concentration of the drug will increase. To achieve the desired control effect.
2. Spray thoroughly through the area where it occurred. Now cotton is in the flowering stage, the plants are tall, must be careful when spraying, with emphasis on spraying the back of the middle and lower leaves of cotton, to prevent leakage, leakage, and effectively guarantee the quality of each spraying. Because the locust breeding speed is fast, if there is a lot of insects in a single blast, it will increase the difficulty of the next control. Generally, the amount of liquid used per mu is between 50 and 60 kg.
3. Advocate the selection of some new drugs. For the conventional use of acetamiprid, imidacloprid and other traditional agents, the control effect is not obvious, you can use 10% nitenpyrazine aqueous solution, 20% butylthiocarbacar EC or 10% chlorothiophene and other new agents to control. Generally 10% chlorothiazide wettable powder 20 grams per mu or 10% nitenpyrazine solution 20 ml per mu.
4. The medication time should be appropriate. During the high temperature period, avoid the noon time and try to use drugs in the morning and evening as early as possible before 10 o'clock in the morning and after 4 o'clock in the afternoon. On the one hand, it can ensure personal safety; on the other hand, it can avoid the rapid evaporation of liquid medicine to dissipate heat and reduce drug consumption. effect. (Hubei Dangyang Agriculture 110 Zhu Liqing)
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