Abstract
The effect of Epitrix hirtipennis (Melsheimer) on the yield and growth of flue-cured tobacco was investigated in Virginia during 1981. Beetles (0, 5, 10, 15, and 20 per plant) were confined to individual tobacco plants in sleeve cages for a 3-week period immediately after transplant. Cages were then removed, and the plants were protected from other insects for the rest of the season. All populations caused significant ( P = 0.05) reductions in fresh- and cured-leaf yield, plant height, leaf area, and root weight. Cured-leaf yield was reduced by 18, 25, 38, and 38% for tobacco infested with 5, 10, 15, and 20 beetles per plant, respectively. Fresh-leaf yield was reduced by 21 g per beetle plant.
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