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Abstract

Field experiments were conducted in the Dominican Republic to determine the effect of different rates of imidacloprid on the control of the tomato fruit worm Keiferia lycopersicella. Imidacloprid was applied once at the rates ranging from 25 to 150% of the recommended dosage (0.5 kg/ha), when 80% of the tomato fruits were 2 cm in diameter. Percentage of surviving and dead larvae and percentage of damaged tomato fruits was determined. Results show that Keiferia control (85%) was achieved with 75% of the recommended rate, and that higher rates failed to provide better control.

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