What are the control methods for powdery mildew on Astragalus membranaceus? Explained clearly in one article
What are the control methods for powdery mildew on Astragalus membranaceus? Please introduce. The control methods for powdery mildew on Astragalus membranaceus can refer to the following: 1. Strengthen field management. Reasonable close planting, pay attention to ventilation and light transmission between plants, can reduce the incidence of disease; fertilization is mainly organic fertilizer. Pay attention to the proper ratio of nitrogen, phosphorus and potassium fertilizers, do not apply too much nitrogen fertilizer, so as to avoid excessive vegetative growth of plants...
What are the control methods for powdery mildew on Astragalus membranaceus? Please introduce
The control methods for powdery mildew on Astragalus membranaceus can refer to the following:
1. Strengthen field management. Reasonable close planting, pay attention to ventilation and light transmission between plants, can reduce the incidence of disease; fertilization is mainly organic fertilizer. Pay attention to the proper ratio of nitrogen, phosphorus and potassium fertilizers, do not apply too much nitrogen fertilizer, so as to avoid excessive vegetative growth of plants, leading to reduced disease resistance.
2. When the disease occurs during the growing period, chemical control can be used.
1. Spray with 25% triadimefon wettable powder at 800 times dilution or 50% carbendazim wettable powder at 500-800 times dilution.
2. Spray with 75% chlorothalonil wettable powder at 500-600 times dilution or 30% solid lime sulfur at 150 times dilution.
3. Spray with 50% sulfur suspension concentrate at 200 times dilution or 25% diniconazole EC at 2000-3000 times dilution.
4. Spray with 25% diniconazole EC at 3000 times dilution plus 15% triadimefon wettable powder at 2000 times dilution.
Use any one of the above fungicides or use them alternately, spraying once every 7-10 days, for 2-3 consecutive sprays, which has a good control effect.
3. Implement crop rotation, do not carry out continuous cropping with leguminous plants and crops susceptible to this disease.
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