18 июн. 2024 г. · The fungus, Ceratocystis fagacearum, invades the tree's water-conducting vessels, hindering the transport of water and nutrients. Red oak ... |
5 мар. 2024 г. · It sounds like you have a disease called Hypoxylon canker. An odd disease that colonizes the bark of healthy trees that may be present for years. |
Powdery mildew is a simple disease to recognize. The first sign of infection is usually white, powdery spots or patches on the top side of leaves or on plant ... |
20 мар. 2024 г. · Oak wilt is a vascular disease caused by an invasive fungus Bretziella fagacearum. The fungus grows inside the living vascular xylem tissues. |
Oak mildew is caused by the fungus Erysiphe alphitoides. Look closely (perhaps with a magnifier) to see that the white patches consist of tiny powdery threads. |
This saprophytic fungus actually colonizes and decomposes the corky, dead outer layers of bark on living trees. Smooth patch is also often referred to as white. |
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