Abstract
Populations of leafhoppers, planthoppers, Trigonotylus doddi (Distant) (Hemiptera: Miridae), and predators were monitored on bermudagrass (Cynodon spp.) cultivars ‘Coastal’, ‘Tifton 44’, ‘Tifton 78’, and ‘Tifton 85’, and bahiagrass (Paspalum notatum Flugge) ‘Tifton 9’; bahiagrass varieties ‘Pensacola,’ ‘Argentine’, and ‘Sand Mountain’; and bahiagrass breeding lines ‘Tifton 4’, ‘Tifton 5’, ‘Tifton 7’, and ‘Tifton 14’ during 1991 and 1992. Insects were more abundant on bermudagrasses than on bahiagrasses. Significant differences in insect abundance also were noted among bermudagrasses, but not among bahiagrasses. Populations of certain leafhoppers and planthoppers were higher on ‘Tifton 44’ than on ‘Coastal’, while populations of leafhoppers, planthoppers, and T. doddi were lower on ‘Tifton 78’, and ‘Tifton 85’ than on ‘Coastal.’ In both years, the number of predators collected on the grasses was correlated with the number of planthoppers and with the total number of phytophagous insects.
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