Walk around your lawn and check where the Pythium Blight has developed and determine the level of severity. The initial presence of Pythium Blight is usually first noticed in low areas of turf where soil moisture is higher and dew begins to form early in the evening and lasts into the next morning. Pythium Blight thrives in areas during hot and humid days of summer when dew periods are long (usually more than 14 hours in duration) and night temperatures reach an average of 68 degrees or more. ![]() During this phase, you will locate where the Pythium Blight is thriving and how severe of an issue there is. InspectionĪfter you have confirmed that you are dealing with Pythium Blight, you can move forward with an inspection. If you are having trouble, you can contact us and we'll help you in correctly identifying your issue. Refer to the image above and our description to help you in identifying Pythium Blight. On high cut turf, large spots of brown patches can appear.If conditions remain favorable, the spots may grow bigger in a short amount on time. Sometimes this is called the "cottony blight" phase of development. If humidity levels stay high, especially at night going into early morning, a white fluffy mass of mycelium may appear.The spots are typically 1 to 3 inches in diameter. In the early morning, a light gray ring may or may not be present along the outer edge of the spot. On short-cut turf like bentgrass, putting greens or fairways, the disease initially appears as orange-colored spots.It is a serious disease of cool-season turfgrasses during hot humid weather. Pythium blight is often caused by various Pythium fungal species such as pythium aphanidermaturm, pythium graminicola, pythium ultimum and pythium vanterpoolii.Here are some symptoms below to help you identify Pythium Blight. Misidentification may lead to using the wrong treatment methods, which can waste your time and money. Identificationīefore you can carry out treatment, you need to be sure you are dealing with Pythium Blight and not some other disease or issue. If you have noticed pythium blight on your lawn, our DIY treatment guide will show you how to eliminate it with professional fungicides recommended by our lawn care experts. At worst case, the solution to fighting the disease is changing your grass entirely and starting from scratch which may not be ideal with how time-consuming and expensive that would be. In other cases, a sign of the disease is white, cobwebby, mold-like growths of the fungus appearing on the leaves and blades of grass. When the weather becomes hotter, the Pythium Blight infected grass begins to wilt at an alarming rate, turns brown and then dries out before eventually dying. The effect of Pythium Blight also results in infested grasses looking greasy or oily. Grasses infected with Pythium Blight often go undetected by lawn owners because, in the early morning, turf infected with Pythium Blight appears to look wet with dew and darkly colored green slime. Pythium blight affects grass in the summer when the temperature and humidity are considerably high. ![]() Pythium Blight, also known as cottony blight, spot blight, or grease spot, is a damaging turfgrass disease that can plague commercial or residential landscapes. Pythium Blight Control: How To Get Rid of Pythium Blight
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