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How to prevent rust-colored spots on mushroom caps
This is generally caused by failing to open doors and windows promptly for ventilation after watering, which makes the humidity in the mushroom house too high; water droplets then collect on the cap surface for a long time, producing rust-colored spots in localized areas. Rust-colored spots resemble bacterial spots, but they are limited to the surface. Preventive measures: open doors and windows for ventilation on schedule or when the weather is suitable, bring in fresh air, and evaporate the moisture on the surface of the mushrooms.
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What are the control methods for mushroom rust spot disease?
Mushroom rust spot disease, also called brown spot disease or bacterial blotch, is caused by Pseudomonas tolaasii, an acidophilic species of the genus Pseudomonas. It spreads through insects, tools, the hands of workers and other carriers. The disease is severe when the casing soil of the mushroom bed has a pH below 5.5, when ventilation is poor, when humidity is too high, and when the mushroom caps remain constantly moist and sticky after watering. Its symptoms are: it generally infects only the epidermal layer of the mushroom cap, causing spots of varying size that are initially yellowish-brown and rust-like in appearance, which later gradually turn brown or black, and sometimes scars with mucus also appear on the caps.
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Why do mushrooms grow as freakish "water-rust spot mushrooms"?
If the mushroom house and the surface of the growing medium are not ventilated promptly after watering, the humidity in the mushroom house becomes too high, small water droplets form on the mushroom surfaces, and over time rust-colored spots appear. Prevention measures: after each watering, open the doors and windows for 30 to 60 minutes to ventilate.
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Control Methods for Rust Spot Disease in Oyster Mushrooms
The rust-colored or dark brown spots appearing on the caps and stipes of oyster mushrooms are called rust spot disease of oyster mushrooms. This disease is a bacterial disease that easily occurs during the fruiting body growth stage of oyster mushrooms. The pathogen causing this disease is a species of Pseudomonas bacteria that is extremely widely distributed in nature. In the early stage of the disease, the spots are only the size of a needle tip and light in color, generally not affecting commercial value. As the disease worsens, the spots rapidly enlarge and their color continuously deepens, often appearing oval or spindle-shaped, or connecting with each other to form irregular large patches, with rust-yellow discolored areas around the patches.
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Control Methods for Black Spot Disease and Rust Spot Disease in Enoki Mushrooms
What to do when enoki mushrooms develop black spot disease and rust spot disease? Please advise. 1. Black spot disease: a bacterial disease caused by Pseudomonas bacteria. After infection, oval brown or dark brown spots appear on the caps of enoki mushrooms, initially needle-tip sized, expanding to 2-4 mm in diameter, with neat edges, and sometimes the caps crack. Control methods...
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