Pepper powdery mildew is mainly a dense white poisonous spot on the back of the leaf, which spreads throughout the entire leaf's back. When the disease is severe, the diseased leaves fall off and the temperature is relatively low, and it often occurs when it continuously rains.
In the vegetative growth stage, the pathogen of pepper powdery mildew is hidden inside the leaves and waits until it produces propagules. Only stick out leaves. Once the lesions are found, it is difficult to control them again. Therefore, the prevention and treatment of the disease must be early, it is best to use a protective bactericide once every few days when the disease is about to occur. After diseased leaves in the field, systemic drugs must be used, and they must be used multiple times. The yellow leaves below the medication did not appear to be small, but the new leaves were kept.
The protective agents that can be used are: 50% sulfur suspension 500 times, 75% chlorothalonil wettable powder 500 times, 70% mancozeb wettable powder 400 times liquid 80% wettable powder 500 times. The systemic bactericides are: 50% carbendazim Nanling WP 500 times, 70% thiophanate-methyl wettable powder 1000 times, 15% Triadimefon (triadimefonone) EC 1000 times, 40%, Fuxing Emulsion 8000 -10000 times liquid, 10% World High Water Dispersible Granule 2000-3000 times liquid, 25% Myclobutanil EC 500-600 times liquid. Compounding agent: 40% polysulfide suspension 400-500 times liquid. It is better to use a mixture of 10% Shihshui water dispersible granule (3000 times liquid) and 75% chlorothalonil wettable powder (500 times liquid).
When using the systemic fungicide, pay attention to the resistance of the bacteria. If carbendazim and thiophanate methyl are not effective, use triadimefon or Fuxing; use triadimefon and Fuxing are not effective. Conazole.
In the vegetative growth stage, the pathogen of pepper powdery mildew is hidden inside the leaves and waits until it produces propagules. Only stick out leaves. Once the lesions are found, it is difficult to control them again. Therefore, the prevention and treatment of the disease must be early, it is best to use a protective bactericide once every few days when the disease is about to occur. After diseased leaves in the field, systemic drugs must be used, and they must be used multiple times. The yellow leaves below the medication did not appear to be small, but the new leaves were kept.
The protective agents that can be used are: 50% sulfur suspension 500 times, 75% chlorothalonil wettable powder 500 times, 70% mancozeb wettable powder 400 times liquid 80% wettable powder 500 times. The systemic bactericides are: 50% carbendazim Nanling WP 500 times, 70% thiophanate-methyl wettable powder 1000 times, 15% Triadimefon (triadimefonone) EC 1000 times, 40%, Fuxing Emulsion 8000 -10000 times liquid, 10% World High Water Dispersible Granule 2000-3000 times liquid, 25% Myclobutanil EC 500-600 times liquid. Compounding agent: 40% polysulfide suspension 400-500 times liquid. It is better to use a mixture of 10% Shihshui water dispersible granule (3000 times liquid) and 75% chlorothalonil wettable powder (500 times liquid).
When using the systemic fungicide, pay attention to the resistance of the bacteria. If carbendazim and thiophanate methyl are not effective, use triadimefon or Fuxing; use triadimefon and Fuxing are not effective. Conazole.
Biological Microscope
Biological Microscope,Trinocular Thermostat Microscope,Biological Trinocular Microscope,Biological Artificial Microscope
NINGBO VANCO INSTRUMENT CO.,LTD , http://www.vancoscope.com