What chemicals should be used to control leaf spot disease in enoki mushrooms (Flammulina filiformis)?
The disease is caused by Pseudomonas bacteria, mainly infecting the caps of enoki mushrooms. It starts as pinhead-sized spots, then expands to the size of sesame seeds. Although the edges are irregular, the lesions can merge with each other to form irregular large rust-colored spots. Control methods: To prevent the occurrence of rust spot disease, do not spray water directly onto the fruiting bodies when watering the mushroom house. After watering...
Currently, the main symptom of diseases harming enoki mushrooms is the formation of spots on the caps. What disease is this, and how should it be prevented?Black spot disease. This is a bacterial disease caused by Pseudomonas bacteria. After onset, oval brown or dark brown spots appear on the caps of enoki mushrooms. They start as pinpoint-sized, and after expanding reach 2-4 mm in diameter, with neat edges, and sometimes the caps crack.
Control methods: The most important thing is to control appropriate temperature and humidity. When watering the mushroom house, do not spray water directly onto the fruiting bodies of enoki mushrooms, and especially do not spray with cold water. The humidity in the mushroom house should not exceed 90% for a long time. Water according to weather changes: on sunny days, water lightly, frequently, and finely; on rainy days, water less or not at all. After each watering, first strengthen ventilation, then cover with plastic film. During the fruiting period, the indoor temperature should be adjusted to below 17°C. After onset, promptly remove diseased mushrooms and spray with agricultural streptomycin at 100-200 units per milliliter or bleaching powder at 600 times dilution.
Rust spot disease. This disease is caused by Pseudomonas bacteria, mainly infecting the caps of enoki mushrooms. It starts as pinhead-sized spots, then expands to the size of sesame seeds. Although the edges are irregular, the lesions can merge with each other to form irregular large rust-colored spots.
Control methods: To prevent the occurrence of rust spot disease, do not spray water directly onto the fruiting bodies when watering the mushroom house. After watering, ventilate promptly. The indoor relative air humidity should not exceed 95% for a long time. When covering the surface of the mushroom bags with plastic film, wait until the moisture on the fruiting bodies has dried. In the early stage of the disease, prevent the pathogen from spreading to healthy fruiting bodies, and spray with 50% carbendazim at 800 times dilution or agricultural streptomycin at 100-200 units per milliliter.