Full TGIF Record # 19874
Item 1 of 1
Publication Type:
i
Report
Author(s):Potter, D. A.; Jackson, D. W.; Vessels, K. J.
Title:Resistance of selected cool and warm season turfgrasses to the greenbug
Source:Kentucky Turfgrass Research. 1981, p. 23-24.
Publishing Information:Lexington, KY: University of Kentucky, College of Agriculture, Cooperative Extension Service
Keywords:TIC Keywords: Schizaphis graminum; Poa pratensis; Festuca arundinacea; Lolium perenne; Weeds; Festuca rubra subsp. commutata; Cynodon; Zoysia japonica; Agrostis stolonifera; Survival; Reproductive performance; Choice of species; Lawn turf
Abstract/Contents:3 studies to test the feeding preferences, survival, and reproductive rate of greenbugs on 9 common lawngrasses, and to test the suitability of 9 common weed species as alternative hosts. The first experiment was a preference test, in which the grasses were interplanted in flats and mass infested. Greenbugs thus had a free choice between the various cultivars and species. The second test measured survival and reproduction of greenbugs confined in cages on potted plants of each grass. In the third test, greenbugs were confined on potted plants of each weed species. Results are provided in a table. The 3 Kentucky bluegrass cultivars 'Kenblue,' 'Adelphi,' and 'Vantage' were all highly suitable hosts. The fact that these cultivars have widely different morphological and genetic characteristics suggests that existing Kentucky bluegrass cultivars with appreciable levels of resistance may not be found. Although previous reports of greenbugs on turf indicate that the aphid will feed and reproduce only on Kentucky bluegrass, we found that both 'Ky 31' tall fescue and 'Jamestown' chewings fescue supported rapid aphid buildup in the greenhouse. This suggests that fescue lawns are not immune to attack. Greenbugs did not survive on ryegrass, bentgrass, zoysiagrass, or bermudagrass. these results are supported by the fact that patches of unaffected bentgrass or ryegrass are often seen in greenbug infested Kentucky bluegrass lawns. Greenbugs failed to survive or reproduce on any of the following grassy or broad-leaved weeds: common dandelion, broadleaf plantain, buckhorn plantain, ground ivy, pigweed, wild strawberry, large crabgrass, violet, and yellow wood sorrel. This indicates that these plants do not serve as reservoirs from which greenbugs could reinfest a lawn.
Language:English
References:0
Note:Table
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Potter, D. A., D. W. Jackson, and K. J. Vessels. 1981. Resistance of selected cool and warm season turfgrasses to the greenbug. KY. Turfgrass Res. p. 23-24.
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MSU catalog number: SB 433 .A1 K4
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