Powdery mildew is a disease that is common in greenhouses. Most crops can be susceptible to diseases. Cucumber and zucchini are more likely to occur, and other such as peppers and tomatoes can also develop disease. The onset of powdery mildew is easier to judge. Generally, the leaves of the disease will have a white mildew layer, and severe blackening will occur. How can we prevent greenhouse powdery mildew?

The most effective way to cause disease in any crop is that we often say "prevention first, comprehensive prevention", and increase the prevention intensity in the daily production process, which will greatly reduce the occurrence of powdery mildew.

Agricultural control: First, choose disease-resistant varieties, introduce or transport seedlings can not bring susceptible plants to the greenhouse; second, we must implement crop rotation, in principle, the rotation period is not less than three years; the third is to adopt reasonable farming measures, diligently More cultivating. The fourth is to reduce the greenhouse humidity and create a relatively low temperature and low humidity production environment.

Chemical control: First, the pharmacy is smothered, and the fungicide can be used to fumigate the agent before planting to kill the pathogen. The second is to use 50% azoxystrobin water or water-dispersible granules 3000 times spray; can also be sprayed with 15% triazolone EC 1000 times (note that it is not used in the seedling period, the use frequency can not exceed 2 times) ), it can also be sprayed with 2% antimycotic water 200 times solution and 10% polymycin 1500 times solution.

The above are related to the prevention and control measures of greenhouse powdery mildew, for your reference, I hope to have some help for everyone, please pay attention to the Hui Nong School for more details.

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