Pythium blight
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These should be applied whenever the conditions are favorable for the appearance of Pythium or when the first signs of the disease is detected. Pythium root rot control is poorly understood because many different. Treatment: There are several fungicides that can help treat and/or prevent this disease.
![pythium blight pythium blight](https://content.ces.ncsu.edu/media/images/pythium-blight-11375-pythium-blight-myceliumtf7-ltc.jpg)
Improve air circulation and drainage of the lawn.
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PYTHIUM BLIGHT PATCH
Pythium blight on tall fescue (Photo Lee Burpee)īrown patch can cause a foliar blight, which results in necrotic leaves and circular brown patches up to 4-5 ft in diameter. Read the label and follow proper guidelines. Consult the Georgia Pest Management Handbook or the Turfgrass Pest Control Recommendations for Professionals ( for proper fungicide selection and usage. Several fungicides are available for each of the diseases described above. A correct diagnosis is essential because Pythium control requires specific fungicides.
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Therefore, cultural practices for control of brown patch will also help to minimize Pythium blight development. All cultivated turfgrasses, especially bentgrasses, annual bluegrass, and ryegrasses are susceptible to attack. Similar environmental and cultural factors that encourage brown patch also promote Pythium. Pythium blight, also known as grease spot, spot blight, and cottony blight, is caused by 15 or more species of soilborne fungi in the genus Pythium, especially P. The disease is driven by hot-wet weather, which correlates with increased stress on the turf. White, cottony mycelia may be evident early in the morning. with slight modifications for compatibility with the available regional weather observations, these maps highlight the risk of pythium blight infection. Turfgrass is particularly susceptible when conditions combine high temperatures. There are several species of the disease and it tends to be most prevalent during hot, humid weather. Affected turfgrass dies rapidly, collapses, and seems oily and matted. Pythium blight (also referred to as grease spot or cottony blight) is a grass fungal infection that can affect the majority of the most common cool-season turfgrasses. The disease starts as small spots, which initially appear dark and water-soaked. Pythium blight has the potential to cause significant damage to turfgrass quickly. These diseases are often the most severe diseases for cool-season grasses, especially on tall fescue and ryegrass. Brown patch (caused by Rhizoctonia solani) and Pythium blight (caused by Pythium spp).