During the cultivation phase of Oyster mushroom, improper dosage of pesticide results in poisoning which appears in large area and reduces the economic values of mushroom.
Symptom: Mushrooms refuse to fruit on the surface of fungus bed, during the initial phase of malformation, sporocarps fail to normally differentiate.
The cause of disease: Excessive or too high concentration of DDVP.
Control measures:
A.During the formation and growth period of sporocarps, you could avoid the pesticides or experimentally apply them in small areas.
B.Strictly control the dosage of pesticide, especially on fungus beds which hold higher temperature. In general, you could apply 80%, 10ml missible oil in each cubic meter. The concentration of spraying should also be controlled in 1 to 600 times liquid.