Vegetables in the process of growth will have a variety of diseases , so long we need to choose vegetable fungicides to treat these viral diseases one by one:
However, it should be pointed out that the action of this kind of fungicide is relatively simple. Once the action site changes, it will inevitably lead to the resistance of the pathogen. For a long time, cases of drug efficacy reduction due to drug resistance have been common. Production practice shows that In some traditional vegetable producing areas, the resistance of pathogenic bacteria is strong, the use ratio of fungicides is decreasing day by day (currently dropped to 200-300 times), not only the cost of prevention is greatly improved, but also the control effect is 70%-80 in the initial stage. % dropped to the current 30%-40%? Therefore, many experts suggest that while comprehensive prevention and control work should be done comprehensively, it is necessary to scientifically select new pesticides and use them alternately during prevention and treatment.
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