Damage
Sod webworms were first recognized as a serious pest of lawns and golf courses during the drought of 1928–1934 that affected most of the United States. Unlike many of the other more destructive turfgrass pests, the sod webworm is native to the United States and was not introduced.
Most damage occurs during the first instar, when the sod webworm only feeds on the foliage of the turfgrass. Damage is often seen as a small area of leaves that are yellow to brown. Sod webworms themselves will not be seen because of their nocturnal nature. During the day, the sod webworm can be found in its burrow in the center of the damaged area. Even though damage can be an eyesore, it does not hurt the turf because no damage is done to the crown of the plant. In closely mown turf and drought conditions, damage is more severe than in poorly maintained turf. In closely mown turf, symptoms will appear more quickly and prominently. During drought conditions, damage is more severe because the damage is often not seen until rainfall occurs.
Read more about this topic: Crambus
Famous quotes containing the word damage:
“Technological innovation has done great damage ... to eating habits. Food is now available in such unpleasant forms that one frequently finds smoking between courses to be an aid to digestion.”
—Fran Lebowitz (b. 1950)
“A cure by regression is homeopathic, like healing the damage done by ministers and ignorance with stupidity and Jesuits.”
—Franz Grillparzer (1791–1872)
“There is such a thing as food and such a thing as poison. But the damage done by those who pass off poison as food is far less than that done by those who generation after generation convince people that food is poison.”
—Paul Goodman (1911–1972)