Harmful symptoms of mushroom verrucosporium disease

After long-term study, it was found that the pathogen only infected the fruiting body but not the mycelium. It takes about 11 days from the beginning of infection to the initial symptoms of mushrooms. The growing hyphae can accelerate the spore germination of verrucosporium. The first crop of mushrooms occurs, and the source of infection is usually covered with soil and old mushroom racks. The disease of the next few crops of mushrooms is caused by the re-transmission of water, tools and human operations: in the stage of mushroom bud formation, the infection is shown as follows: diseased mushrooms grow in large numbers before normal mushrooms appear, and generally diseased mushrooms produce 3-4 days earlier than normal mushrooms. If the diseased mushroom is infected in the young bud growth period, although the diseased mushroom continues to grow, the development of the cap is abnormal or stops, the stalk expands and deforms, showing a crooked deformity, and the interior of the diseased mushroom is hollow in the later stage. the junction between the cap and the stalk and the base of the stalk grow white and fluffy hyphae, then turn dark brown, and exudate brown juice and rot, giving off a foul smell.