Control of basal rot of Flammulina velutipes

In the growth and development stage of the symptomatic fruiting body, the base of the stalk became dark brown to black erosion, and after the basal erosion, the fruiting body lodged. Although the young mushroom cluster does not lodge, it can not continue to grow and develop upward. When it occurs seriously, the acicular young mushroom becomes black and eroded. Penicillium sp., the pathogen, belongs to the subphylum Trichoderma, Trichoderma, Coleoptera, Piliaceae. The pathogen, such as on potato sucrose medium, has white and powdered hyphae. The culture medium was dark reddish brown and the colony was pink. The peduncle grows from the aerial hyphae and bifurcates symmetrically. Similar to the branching of penicillin, but the conidia placed at the tip of the branchlet can form a long chain, which is up to 400 million microns long, and the conidia are oval, single-celled and colorless. It occurs everywhere, and most of them are planted in indoor beds. It mostly occurs on the mushroom bed of cottonseed shell raw material cultivation, the water content of the culture material in the growth stage is too high, there is stagnant water on the bed for a long time, and the film is covered for a long time, poor ventilation and excessive wet crossing, which is favorable for occurrence. Prevention and treatment 1. It is very important to control the appropriate water content in the fruiting body growth stage and often eliminate the stagnant water on the bed surface, especially in the fruiting growth stage. 2. After discovering the diseased mushroom, it should be eliminated in time, and then spray 1 ∶ 500 times 25% carbendazim or 65% Dysen zinc, which can get a certain control effect.