How to treat turf Pythium wilt

Pythium wilt is common in all parts of the country and can infect all turfgrasses. Such as cold-season Kentucky bluegrass, Kentucky bluegrass and so on. Among them, cold-season turfgrass suffers the most, so how to treat turf Pythium wilt?

First, how to treat turf Pythium wilt?

Protective fungicides and potassium dihydrogen phosphate can be properly sprayed once every 7-10 days to improve lawn disease resistance and play a preventive role. If infected, the disease can be drenched with 64% disinfectant alum 400 times, carbendazim 500 times 800 times or methyl topiramate 1000 times.

Second, the harm of turf Pythium wilt

The disease usually occurs from May to September. There were no obvious spots on the leaves at the onset of the disease, and the diseased plants generally withered downward from the leaf tip or water-stained upward from the leaf sheath. The disease spot is bluish gray, sometimes with reddish brown, when the humidity is high, it becomes dark green and rotten, the plant can see obvious mycelium, and it feels greasy to the touch. The withered grass circle is round or horseshoe-shaped, and when the disease is serious, the lawn withered and died, and the rot is attached to the soil surface. this kind of dead grass area is often distributed in the low-humidity section of the lawn, sometimes along the lawn mower operation route.

Pythium has strong adaptability, which can not only infect and harm in cold and humid environment, but also become rampant in hot weather and destroy lawns rapidly. The highest temperature in the day is more than 30 ℃, the lowest at night is more than 20 ℃, the atmospheric relative humidity is higher than 90%, and lasts for more than 14 hours, which is very easy to cause turf Pythium wilt. The disease is serious when the soil is depressed and watery, the soil is barren, the content of organic matter is low, the ventilation is poor, the phosphorus fertilizer and potassium fertilizer are deficient, and the nitrogen fertilizer is overused.

Pythium Fusarium wilt is a kind of disease that does great harm to lawn, which is mainly controlled. If you are infected, don't worry, just use the medicine in time to cure it.