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Soybean Fusarium mycorrhizal rot

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, Symptoms: Fusarium mycorrhizal rot is one of the common root rot diseases of soybean. It mainly occurs in the seedling stage. The root and stem basal therapy of the diseased plant produced oval brown strip to irregular concave spot, which expanded into a large patch around the main root, and some damaged the lateral root. The fungus is mainly harmful to the cortex, resulting in slow emergence of diseased seedlings, chlorosis of cotyledons, less lateral roots and fibrous roots, black roots in the later stage, epidermis rot, yellowing and dwarfing of diseased plants, early shedding of leaves under treatment, diseased plants generally do not wither and die, but few pods and small grains. Prevention and control measures should be taken to give priority to prevention. (1) choose anti-

Symptoms: Fusarium mycorrhizal rot is one of the common root rot diseases of soybean. It mainly occurs in the seedling stage. The root and stem basal therapy of the diseased plant produced oval brown strip to irregular concave spot, which expanded into a large patch around the main root, and some damaged the lateral root. The fungus is mainly harmful to the cortex, resulting in slow emergence of diseased seedlings, chlorosis of cotyledons, less lateral roots and fibrous roots, black roots in the later stage, epidermis rot, yellowing and dwarfing of diseased plants, early shedding of leaves under treatment, diseased plants generally do not wither and die, but few pods and small grains.

Prevention and control measures should be taken to give priority to prevention. (1) selecting disease-resistant varieties. Such as Heihe No. 3, Hongfeng No. 3 and so on. (2) sowing early at the right time, mastering sowing depth, implementing subsowing tillage, reasonable rotation, selecting disease-free seeds, etc. (3) mixing seeds with 50% of 0.3% seed weight has a certain control effect. (4) Chemical control see Phytophthora root rot of soybean. (5) spraying plant power 2003 or more rare earth nutrients if necessary.

 
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