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Texas root red

The "Texas root rot" (also Phymatotrichopsis root rot or Ozonium root rot) is in Mexico and in the southwest of the United States widespread. The disease was first discovered in 1888. It is caused by the soil fungus "Phymatotrichum omnivora", which affects the roots of plants. This thrives particularly on alkaline and calcareous soils in warm, damp weather. The first symptoms of the disease are common chlorosis on the leaves. Then the leaves brown and withering. After two weeks of the first symptoms, the plant eventually dies. Striking, uniformly branched hyphae can be found on infected root tissue (picture left). The infested form in the vineyard vines Individual circles seen with dry leaves seen from above. The fight takes place with fungicides, See also under Vine enemies,

Texas root red - mushroom Phymatotrichopsis omnivora and symptoms in the vineyard

Left: By Dr Jose R. Liberato - pests and diseases , CC BY 3.0 au , Link
Right picture: extension

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