What are the control methods for mung bean powdery mildew?
How to control mung bean powdery mildew? Please advise on mung bean powdery mildew: Symptoms: Small white powdery spots are scattered on the leaf surface. When the climate is suitable, the spots expand rapidly, and the diseased leaves become covered with a white powdery substance, which is the pathogen's mycelium, conidiophores and conidia. After young pods are infected, they become deformed, and a white powdery substance also grows on their surface...
How to control mung bean powdery mildew? Please advise
Mung bean powdery mildew:
Symptoms: Small white powdery spots are scattered on the leaf surface. When the climate is suitable, the spots expand rapidly, and the diseased leaves become covered with a white powdery substance, which is the pathogen's mycelium, conidiophores and conidia. After young pods are infected, they become deformed, and a white powdery substance also grows on their surface. In the later stages of the disease, small black grains, which are the pathogen's cleistothecia, form within the white powdery substance.
Disease pattern: The pathogen overwinters as cleistothecia on diseased plant residues, and the following year releases ascospores, which spread by wind and rain to cause primary infection. Conidia produced on the lesions also spread by wind to cause secondary infection. High temperature and dry conditions favor the occurrence of the disease.
Control methods: First, remove diseased plant residues; second, in the early stage of the disease, spray with 15% triadimefon wettable powder at 1000-1500 times dilution, or 20% triadimefon emulsifiable concentrate at 2000 times dilution.
Click to get more mung bean cultivation techniques
Click to get more grain and oil crop cultivation techniques