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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 .
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.
The graveyards of dead ants are numerous and spread throughout the surrounding area of the colony. Though O. unilateralis is very virulent, only about 6.5% of all fruiting bodies are viable spore producers. This is caused by the weakening of the fungus by the hyperparasite, which may limit the viability of infectious spores.
When the smut invades the host plant it causes hypertrophy – the host's cells increase in size and number. (The fungus also destroys the flowering structures of the plant, so it does not make seed, but the plants can still be propagated asexually by rhizome.) In an environment such as a rice paddy, new sprouts of wild rice are easily infected ...
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 ...
repellent to many pests [3] Parsley: repels asparagus beetles [3] Peppermint: repels aphids, cabbage looper, flea beetles, squash bugs, whiteflies, and the Small White [3] Petunias: repel aphids, tomato hornworm, asparagus beetles, leafhoppers, [2] and squash bugs [3] Pitcher plants: traps and ingests insects Radish: repels cabbage maggot and ...
[citation needed] Symptoms of infection by C. africana include the secretion of honeydew (a fluid with high concentrates of sugar and conidia), which attracts insects like flies, beetles and wasps that feed on it. This helps spread the fungus to uninfected plants. In Sorghum, this honeydew can be spotted coming out of head flowers.
Other control methods for Texas root rot are deep plowing of the soil post-harvest, the establishment of protective plant barriers, and the incorporation of organic crop residues into the soil. [15] Deep plowing after harvest breaks up potentially infected soil 6 to 10 inches (15 to 25 cm) deep and has been shown to combat Texas root rot by ...
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