Full TGIF Record # 19697
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Publication Type:
Author(s):Cockfield, S. D.; Potter, D. A.
Title:Predation on sod webworm eggs as affected by Dursban application to Kentucky bluegrass turf
Source:Kentucky Turfgrass Research. 1983, p. 31.
Publishing Information:Lexington, KY: University of Kentucky, College of Agriculture, Cooperative Extension Service
Keywords:TIC Keywords: Poa pratensis; Predators of insect pests; Non-target effects; Insecticides; Chlorpyrifos; Residue persistence; Application timing; Formicidae; Biological control; Crambinae
Abstract/Contents:1983 study to determine importance of predaceous insects in suppressing sod webworms. When batches of 500 newly-laid sod webworm eggs were set out in Kentucky bluegrass, predators consumed or carried off up to 75% of the eggs within 48 hrs. Ants were the main predators. A summary of observations is presented. A single spray of Chlorpyrifors (Dursban) resulted in significant mortality of ants and other predators. When eggs were placed in the turf one week and three weeks later, the rate of mortality from predation was significantly lower than in unsprayed plots. Predation rates returned to normal five weeks after treatment. These results indicate that: 1) predators are important natural control agents of sod webworms, and 2) improperly timed sprays can adversely affect predators and result in greater sod webworm egg survival.
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Cockfield, S. D., and D. A. Potter. 1983. Predation on sod webworm eggs as affected by Dursban application to Kentucky bluegrass turf. KY. Turfgrass Res. p. 31.
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