Virus disease manifests as mottled and wrinkled mosaics in the field. When the disease was mild, mosaicism and mottled symptoms appeared. When the disease was heavy, there appeared wrinkled and leafy mosaic plants. The leaves were deformed, shrunk, and the mesophyll uplifted and formed freckle. There were obvious yellow-green intertwined leaves. Control methods: timely control of aphids. In the early stage of disease, 20% of the virus can be sprayed with A500-fold spray, sprayed every 7-10 days, and sprayed 2-3 times.
Onset of mungbean leaf spotted, initially on the leaves of water spots small spots, then expanded to a round or irregular brown spots, later became a large necrotic spot, causing dry or fallen leaves. Control methods: Strengthen field management, timely drainage and scabbing after rain, in the early stage of disease, 70% mancozeb 500 times liquid, 41% sterilizer 2000 times liquid, or 20% Lanti 500 times spray Control, spray once every 7-10 days, even spray 2-3 times.
In the initial stage of root rot disease, the heart leaves turn yellow. If the root system is observed, the lower part of the stem and the upper part of the main root are dark brown and slightly concave. Looking at the stem, the vascular bundle turns dark brown. When most of the roots are rotted, the plants wither and die. Control methods: In the early stage of disease, 75% chlorothalonil 600 times solution, 15% rotten spirit 600 times solution, or 70% thiophanate-methyl 1000 times solution can be used to spray every 7-10 days. -3 times.
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