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What disease does cucumber leaf stem oozing pus indicate?
What disease is it when cucumber leaf stems ooze pus?
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What are the control methods for arrowhead leaf spot disease?
1. Symptoms This disease mainly damages leaves and leaf stalks. The leaf spots are yellowish-brown to brown, polygonal, elliptical or irregular in shape, slightly zonate, surrounded by a yellow-green or green-brown halo; the spots sometimes merge with one another into large lesions, and in severe cases the leaves turn yellow and wither. On leaf stalks, the disease often produces short, streak-like brown spots, and under high humidity a gray mold grows on the surface of the spots. 2. Transmission route and disease pattern This disease is caused by infection by the fungus Cercospora sagittariae of the subphylum Deuteromycotina. The pathogen mainly overwinters as mycelium and conidiomata on diseased plant residues
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What chemicals should be used to control leaf spot disease in enoki mushrooms (Flammulina filiformis)?
The disease is caused by Pseudomonas bacteria, mainly infecting the caps of enoki mushrooms. It starts as pinhead-sized spots, then expands to the size of sesame seeds. Although the edges are irregular, the lesions can merge with each other to form irregular large rust-colored spots. Control methods: To prevent the occurrence of rust spot disease, do not spray water directly onto the fruiting bodies when watering the mushroom house. After watering...
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What are the leaf-bag cultivation methods for black fungus?
How to cultivate black fungus in leaf bags? Please advise. With the rapid development of bag-cultivated black fungus, traditional sawdust as a growing medium can no longer meet the demand in many places. The research group of the Edible and Medicinal Fungi Extension Center of the Science and Technology Association of Linkou County, Heilongjiang, succeeded in using leaves instead of sawdust to cultivate black fungus. This new technology...
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