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As previously mentioned, this disease alters the grass by creating patches of yellow or tan dead grass (1). Another possible symptom is leaf lesions. Leaf lesions are often common among fungal diseases. If there are leaf lesions on the blade, the lesions will be inconsistent in terms of size and shape.
Over 77 °F (25 °C), the growth rate of the fungus decreases significantly, and it ceases at 85 °F (29 °C). 8 Turf grass that is poor in nutrition and are slow growing are areas that are more susceptible to red thread disease. 2 The fungus grows from the thread like red webbing structures called sclerotia. 1 The sclerotia can survive in leaf ...
The fungus then begin to move down and invade the crowns and the roots of the plants. From far away, the turf appears yellow or blackish brown. The colors that appear on the turf directly reflect the nitrogen levels in the plant. When turfgrass has low levels of nitrogen it turns yellow and when it has high nitrogen levels, it turns blackish brown.
When the fungus is ready to reproduce, its fruiting bodies grow from the ant's head and rupture, releasing the spores. This process takes 4–10 days. [9] Dead ants are found in areas termed "graveyards" which contain high densities of dead ants previously infected by the same fungus. [16]
Ophiocordyceps sinensis (synonym Cordyceps sinensis), known colloquially as caterpillar fungus, is an entomopathogenic fungus (a fungus that grows on insects) in the family Ophiocordycipitaceae. It is mainly found in the meadows above 3,500 metres (11,500 ft) on the Tibetan Plateau in Tibet and the Himalayan regions of Bhutan , India , and Nepal .
Here’s how to manage these turf-destroying pests. For premium support please call: 800-290-4726 more ways to reach us
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