Leaf Spot

Symptoms

  • Purplish-brown to black spots with tan centers on the leaf blade and sheath.
  • Lower leaves of infected plants become shriveled and blighted.
  • In severe cases, almost all of the leaves and tillers die.
  • Typically follows the appearance of leaf spots on cool-weather turfgrass.

Conditional Favoring Disease:

  • Temperatures between 40°F and 80°F.
  • Areas with 10 hours a day of foliar wetness for several consecutive days.
  • High amounts of nitrogen and low mowing height.
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