How to prevent and control Trichoderma on straw mushrooms? Latest technical method tutorial
Straw mushroom, also known as orchid mushroom, is mainly distributed in South China, China. It is rich in nutrients and delicious in taste, and is one of the common dishes, and now straw mushrooms are also relatively plentiful. When cultivating straw mushrooms, Trichoderma is an extremely harmful disease, seriously affecting the yield and quality of straw mushrooms. So how should Trichoderma on straw mushrooms be prevented and controlled? Let's learn about it together.
1. Disease symptoms
After straw mushrooms are infected with Trichoderma, white cotton-like substances will grow, which will inhibit the growth of hyphae. In the later stage, the white cotton-like substances will turn green. Once straw mushrooms are harmed by Trichoderma, they are basically beyond saving. Even if the infection is only mild, they cannot be retained and must be removed immediately.
2. Disease pattern
Trichoderma is commonly known as green mold. It belongs to the Deuteromycotina, Moniliales, Trichoderma genus. It has a strong ability to decompose cellulose and grows relatively quickly on substrates of lignin and cellulose, and is relatively easy to reproduce. Trichoderma can reproduce in the rhizosphere at noon and control harmful fungi by occupying space and nutrients. It can also increase the secretion of antibiotic substances to inhibit the proliferation of harmful fungi and achieve the effect of disease prevention and control.
3. Prevention and control measures
So far, no method has been developed that can completely cure Trichoderma on straw mushrooms. Commonly used fungicides can only play an inhibitory role and cannot kill it. Even if the dosage is increased, it will only kill the straw mushroom hyphae. Therefore, prevention should be the main approach. The hyphae of straw mushrooms grow in a relatively good environment, and this environment is not suitable for the growth of Trichoderma. At this time, this is the fundamental measure to control infection of straw mushrooms by Trichoderma. After discovering that straw mushrooms are infected, the temperature of the mushroom house should be lowered in time and ventilation should be maintained, which can effectively control the beginning of Trichoderma. If Trichoderma infection occurs during the mycelial growth stage, injection of medicinal liquid can be adopted to inhibit the expansion of Trichoderma. Commonly used agents include 5% carbolic acid, 2% formaldehyde, 1:200 dilution of 50% carbendazim, 75% thiophanate-methyl, etc., or spread a layer of lime on the infected area to control its spread.
The above is an introduction to the prevention and control technology for Trichoderma on straw mushrooms. I hope it can help you. If you want to learn more related knowledge, please stay tuned to us.