MySheen

Control methods of mung bean root rot

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, (1) the heart leaf turns yellow at the beginning of the symptom. If the root system is pulled out, it can be seen that the lower part of the stem and the upper part of the main root are dark brown and slightly depressed. When the stem is cut open, the vascular bundle turns dark brown. When most of the roots rot, the plants wither and die. (2) the condition of the disease is low-lying, high soil moisture and ground temperature.

(1) The heart leaves turn yellow in the early stage of symptoms. If the root system is pulled out for observation, the lower part of the stem and the upper part of the taproot are dark brown and slightly depressed. When the stem is dissected, the vascular bundle turns dark brown. When most of the roots rot, the plant withers and dies. (2) The disease condition is low-lying, the soil moisture is large, the ground temperature is low, and the root system development is poor. Rain and wind helped spread the germs. (3) Control methods 1. Select disease-resistant varieties and rotate them with non-leguminous crops for more than 3 years. 2. Cultivate in time, drain water after rain, and improve ground temperature. 3. At the beginning of the disease, 75% chlorothalonil 600 times solution, or 15% putrescine 600 times solution, 70% methyl thiophane 1000 times solution spray, spray once every 7-10 days, spray 2-3 times continuously. If use above chemical irrigation effect is better. Pests: mungbean occurrence of more pests mainly aphids, available 40% omethoate 1000 times liquid spray.

 
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