Pleurotus ostreatus pesticide poisoning malformation
In the cultivation process of Pleurotus ostreatus, the use of pesticides to control pests and diseases, if used improperly can often cause poisoning image, but also occur in a larger area, reducing the constant and economic value.
Symptoms After the disease has occurred, it causes the head of the bed not to produce mushrooms, to produce little mushrooms or to produce abnormal mushrooms. In the early stage of malformation mushroom, the fruit body could not be normally differentiated to form caps, stipe, and spores, and the symptoms were reduced or disappeared after spraying the first tide body.
Before pathogenic mushrooming or mushroom production, the mushroom bed is fumigated with a dichlorvos tampon or directly sprays dichlorvos pesticides onto the bed. Overdose or high spraying concentration results in mushroom buds forming malformed mushrooms.
The occurrence of diseases and insect pests is more than usual, and mushroom beds with large doses are prone to occur and occur severely.
Control methods
(1) During the formation and growth stages of fruiting bodies, pesticides should be avoided, or small-scale tests should be carried out, and then they should be promoted for use after production.
(2) Strictly control the dosage, especially in the mushroom bed with higher temperature, generally the dosage per cubic meter of space should be controlled at about 10% of 80% EC. The spray concentration is controlled at around 1:800 times.
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