In the winter and spring, when the temperature in the shed is below 20 degrees, the humidity is above 90%, and the long-term comprehensive effects such as poor illumination, it usually causes gray mold, powdery mildew, angular leaf spot and downy mildew. The disease is often mixed. The use of pesticides to control diseases is based on the fundamental principle of rational mixing and alternating use when spraying pesticides, which can control the occurrence of diseases.
1, pyrimethanil + difenoconazole or ether phenol mixed, for gray mold and white powder, black star disease, etc. have effect;
2, dimethomorph + organic copper preparation, or dimethomorph + agricultural streptomycin (medium bacteriocin, Chunremycin can be), effective against downy mildew, keratin and other bacterial spot disease;
3, downy mildew hydrochloride + difenoconazole mixture, or enoylmorpholine + myclobutanil, have the same effect on downy mildew, white powder and black star disease;
4. When the disease has occurred, depending on the main disease type, one of the above formulas is used for sterilization. The pesticide manufacturer recommends spraying the ether-ester esters every 3-5 days, and then spraying another one of the above formulas every 5-7 days. This is used interchangeably. When no disease occurs, spray the medicine every 7-10 days; when the disease occurs, the spraying time is shorter, and the prevention and treatment are alternately matched.
The Pesticide Information Network reminds everyone that only by mastering the scientific use of pesticides can we control diseases from the root causes. The above is the pesticide use formula for your reference, want to know more about pesticide use technology, please visit .
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