Vegetable pests and diseases

The production of vegetable pests and diseases will be carried out by selecting suitable pesticides, but some pests and diseases on vegetables will produce certain resistance, which requires us to choose reasonable measures to solve them.
Vegetable pests and diseases are resistant to drugs, which will significantly reduce the control effect, and it is important to avoid or delay the development of drug resistance.
Switching to a different drug is the first choice for addressing resistance and can immediately change the problem of poor control. Different types of drugs, different functions, different pesticides , once you switch to see rice. Mix other drugs together. If the systemic drug is mixed with the contact agent, the time for the resistance of the systemic drug will be greatly delayed; the use of the complementary drug will also greatly delay the resistance and significantly improve the control effect. If carbendazim is mixed with carbendazim, all the gray mold that is resistant to carbendazim can be killed by carbendazim, while the resistance to carbendazim can be eliminated by carbendazim. The resistance of the mixed bacteria to carbendazim and carbendazim was significantly reduced. Make full use of the effective low concentration, that is, the one with the best effect and the lowest concentration. The concentration is low, and the dosage is at least very effective for pests and diseases. Therefore, the use of a drug should start from this "effective low concentration", and it is not appropriate to increase the concentration arbitrarily. Vegetable farmers who have the premise should use the effective low concentration of the imitation, or reduce the concentration of the imitation after the test, and use less. As long as the effect is good, you should boldly and bravely lower the concentration, and use high-quality spray to reduce the concentration. If the recommended concentration of pesticides is 600 times, the test proves that the control effect is still excellent when it is 1000 times, it should be used from 1000 times. It took many years to reach the indicated concentration, which confirmed that the vegetable farmer was a master of medicine and the resistance was much slower.
Mixing synergists is an effective way to slow down the resistance of pesticides. Often the medicine is not used much, the number of times has not increased, the effect is particularly good, and resistance is difficult to produce quickly. There are a variety of synergists, such as meal washing, neutral detergent, mineral oil, vinegar, etc., which can increase the adhesion, osmosis, pH, etc., which can be used as substitutes.
The above four are emergency measures to prevent the resistance of pests and pathogens. Advocating comprehensive prevention and control, implementing prevention as the mainstay, overcoming blind drug use and pesticide abuse, and improving prevention and control technology are the basis for avoiding resistance, and we must make overall plans and take care of it.

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