Abstract
Six strawberry (Fragaria × ananassa Duch.) cultivars known to vary in susceptibility to tarnished plant bug (Lygus lineolaris P. de B.) injury (apical seediness) were grown under three insecticide regimes including no spray, one spray and three sprays, to determine if differences in susceptibility could be used to modify chemical controls for this insect. The most susceptible cultivars harbored more tarnished plant bug nymphs than the least susceptible cultivars. Differences in injury among cultivars was greatest when no insecticide was applied. `Honeoye' and `Sparkle' had the least amount of apical seediness, followed by `Redchief', `Guardian' and `Kent'. `Mic Mac' consistently had the highest level of injury. When insecticide sprays were reduced, apical seediness did not significantly increase for cultivars exhibiting low susceptibility.
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