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What are the prevention and control methods of astragalus powdery mildew?

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, What are the prevention and control methods of astragalus powdery mildew? Please introduce the prevention and control methods of Astragalus powdery mildew can refer to the following: first, strengthen field management. Reasonable close planting and paying attention to ventilation and light between plants can reduce the incidence of disease, and organic fertilizer is the main fertilizer. Pay attention to the proper proportion of nitrogen, phosphorus and potassium fertilizer, do not apply nitrogen fertilizer, lest the plant will grow too much.

What are the prevention and control methods of astragalus powdery mildew? Please introduce the prevention and control methods of Astragalus powdery mildew can refer to the following: first, strengthen field management. Reasonable close planting and paying attention to ventilation and light between plants can reduce the incidence of disease, and organic fertilizer is the main fertilizer. Pay attention to the proper proportion of nitrogen, phosphorus and potassium fertilizer, not partial application of nitrogen fertilizer, lest the plant will grow too much and lead to the decrease of disease resistance. Second, during the growing period, the disease can be prevented and treated with chemicals. 1. Spray with 25% vermicellin wettable powder 800 times or 50% carbendazim wettable powder 500-800 times. 2. Spray 75% chlorothalonil wettable powder 500-600 times or 30% solid stone sulfur mixture 150 times. Spray 2000-3000 times of 50% sulfur suspension or 25% enemy demulsifiable oil. 4. 3000 times liquid of 25% enemy demulsifiable oil and 2000 times liquid spray of 15% triadimefon wettable powder. Use any of the above fungicides or use alternately, spray once every 7-10 days, spray 2-3 times continuously, have a better control effect. Third, implement crop rotation, do not continuous cropping with legumes and crops vulnerable to the disease. Click to get more planting techniques of Radix Astragali

 
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