Based on years of production practice and observation. At present, the occurrence of pests and diseases in Astragalus is small, and generally no special control is required. Only a few plots are found to have the occurrence of leaf blight. Leaf blight: The source of the disease is a fungus in the fungus. The main damage leaves. Symptoms extend inward from the tip of the leaf or the rim. The irregular black-spotted lesions spread quickly from top to bottom, causing the leaves to die and prone to onset in high temperatures and rainy seasons. Control methods: Dispose of the sick plants in winter, remove the infected strains of the diseased plants and burn them to eliminate the pathogenic bacteria. In the early stage of disease, 50% carbendazim WP is used 1000 times 1:1:120 Bordeaux spray and sprayed once every 7-10 days. It can be cured 2-3 times in succession.
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