What is the Fusarium blight?
Fusarium blight is a devastating fungal disease of lawns and golf courses. It's a special problem with Kentucky Bluegrass. The classic symptom is the circle of dead grass up to 1 ft (0.3 m) across, with live grass in the center, giving the appearance of a frog. Tricinctum and f. Roseum . These are primarily a problem for grass seasons such as Kentucky Bluegrass, annual bluegrass, high Féka and Bentgrass. However, they will also occasionally attack warm seasons. At higher temperatures, the color turns red -brown and finally to the color of the straw. As the fungus moves from leaf shoulder blades into the crown and causes the crown, the grass is dying. The patches usually increase and develop a classic pattern of frog grass in the middle.
Fusarium blight is the most serious when daily temperatures reach 85 to 95 ° F (29.4 to 35 ° C) and night temperatures are or more than 70 ° C), especially if the lawn is emphasized from dryness. HumidityThe problem deteriorates and the areas full of sun are the most risk. Excessive and excessive fertilization contributes to grasses. This grass occurs throughout the United States, but is a special problem in the middle -atlantic states and in the Midwest because of their hot and wet summer. In parts of Earth with less humid summer, such as a large part of California, playing lawn, such as irrigation practices, play a major role in the development of this disease.
These mushrooms can destroy part of the lawn per week as soon as the spores begin to be actively produced and preventive measures are very important to prevent the root. In autumn, it is important to bounce the lawn if the accumulation of that roof is greater than 0.5 V (1.3 cm). In addition to the survival of winter in infected grass, these mushrooms also live in that that.
timing and watering schedule is also very important. Irrigation should be thorough and occasional. It should take place early in the morning, so the grass dries before the day becomes very warm. This is true in general for Va lot of mushroom types on the lawn. It is important that the lawn does not wipe over and let it dry.
If fungi is a potential problem in the bluegrass lawn in Kentucky, 20% of permanent rye should be excessively deployed. This minimizes the susceptibility of the lawn to this disease. One should keep the lawn well fertilized, but it is important not to be too much nitrogen. Another preventive measure is to mow to a relatively high level of at least 3 V (7.6 cm). There are also newer cultivars of Kentuckybluegrass, which is less susceptible to Fusarium blight.
Once the lawn is infected, it is usually necessary to treat with it with fungicides suitable for the region. System fungicides are most likely to work, but it is not guaranteed to succeed. One should act quickly until the symptoms are manifested. Most likely they will start near the edges of sidewalks and driveways, where grass heats up more than in the center of the lawn.