What are the control methods for mushroom gall midges

Edible fungi are a type of vegetable we often eat in our daily lives. During the cultivation of edible fungi, many pests and diseases appear, among which gall midges are a relatively common one. This article summarizes some control methods for mushroom gall midges for everyone's reference.

I. Causes of occurrence (1) Improper composting of the growing substrate. The substrate is not thoroughly composted, the turning is uneven, the composting time is too short, and disinfection is not thorough. (2) The microclimate in the mushroom house is unsuitable, such as excessive humidity in the mushroom house. (3) Poor cultivation conditions. Mushroom growers use old mushroom racks to cultivate mushrooms, and disinfection after harvest is not thorough. The water source is not clean and carries pathogens, pests, and contaminating microorganisms. The mushroom house has poor ventilation.

II. Control methods (1) Site selection and mushroom house disinfection. The entire mushroom production site must be chosen in a place with dry terrain, close to a clean water source. If mushroom beds are built indoors, disinfection inside the room should be strengthened. Fumigate with sulfur and dichlorvos at a ratio of 1:1, then fumigate again after 5 days. If old mushroom racks are used, they should first be soaked in water for several days, drained, and then moved into the mushroom house for fumigation. Disinfection with a 2% sodium pentachlorophenate solution has a good control effect. (2) Do a good job of environmental sanitation inside and outside the mushroom yard, promptly remove waste materials and dirt, and the site should be regularly sprayed with disinfectants and insecticides, such as dichlorvos. Install screen doors and screen windows in the mushroom house. (3) The growing substrate must use secondary fermentation. During the pre-fermentation process, turn the material evenly, control the moisture content of the substrate, and prevent excessive moisture. During the post-fermentation process, pay attention to the temperature and time of the heating and temperature-control stages. Before post-fermentation, tools that have been used or are about to be used should also be disinfected to prevent contamination by pathogens, pests, and contaminating microorganisms. (4) After inoculation of the mushroom bags, the sealing method should preferably use the ring sealing method. The sealing paper should be double-layered paper. During transport, prevent the sealing paper from falling off, and handle it gently. If a break is found in the mushroom bag, it should be immediately covered with adhesive tape to prevent pests from laying eggs at the break and causing damage. (5) Control the temperature and humidity of the mushroom house. The mushroom house should be ventilated to regulate temperature and humidity. (6) Chemical control. When turning the growing substrate, spray the substrate with a 1000-fold dilution of 90% trichlorfon or 50% malathion emulsion, which can effectively prevent the occurrence of pests.