Take-all patch appears as circular or ring-shaped dead areas that
range from a few inches up to 3 feet (90 cm) or more in diameter.
Roots are rotted and have dark strands of mycelium visible on the
surface. Large, black, globular, fungal fruiting bodies (perithecia)
may be visible with the use of a hand lens.
Conditions favoring disease
Take-all patch generally occurs in the late fall and winter when
temperatures are 50° to 60°F and soils are wet or moist.
However, symptoms may not appear until the turf is exposed to periods
of drought or heat stress. Soils light in texture, low in organic
matter, or underfertilized also contribute to disease development.
Prevention and management
Improve soil drainage and fertilize at the recommended
rate for your turf species. A professional soil
analysis can provide you with information on amendments to
add to improve the soil.
For more information on lawn diseases, refer to:
Pest Notes: Lawn Diseases:
Prevention and Management