Full TGIF Record # 60297
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Publication Type:
Author(s):Crutchfield, Berry; Potter, Daniel A.; Powell, A. J.
Author Affiliation:Crutchfield: Graduate Student, Entomology; Potter: Ornamental and Turfgrass Entomology; Powell: Extension Turfgrass Management, Turfgrass Research/Extension Staff, University of Kentucky
Title:Damage thresholds for white grubs on cool-season turfgrasses
Source:Kentucky Turfgrass Research 1990-1992. 1992, p. 93-94.
# of Pages:2
Publishing Information:Lexington, KY: University of Kentucky, College of Agriculture, Cooperative Extension Service
Series:Progress Report 343
Keywords:TIC Keywords: Threshold values; Cyclocephala lurida; Popillia japonica; Cool season turfgrasses; Poa pratensis; Agrostis stolonifera; Festuca; Lolium perenne
Abstract/Contents:Discusses experiments used to quantify relationships between grub density, root damage, foliar growth, and aesthetic quality of different cool-season turfgrasses to establish damage thresholds. Two studies were conducted: one to measure effects of irrigation, and the other to consider grass species effects. Masked chafer grubs were more damaging than Japanese beetle grubs, contrary to popular belief. "Damage thresholds for both types of grubs are much higher than industry 'rules of thumb' of 3-6 grubs per ft². Damage thresholds for grubs in tall fescue were considerably higher than for Kentucky bluegrass. Other grasses showed intermediate effects. The value of irrigation in masking grub damage was not quantified."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Crutchfield, B., D. A. Potter, and A. J. Powell. 1992. Damage thresholds for white grubs on cool-season turfgrasses. KY. Turfgrass Res. p. 93-94.
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MSU catalog number: SB 433 .A1 K4
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