ABSTRACT
The utilization of selective insecticides is a viable tactic for the integration of biological and chemical methods in pest control. Thus, the goal of this research was to evaluate the impact of some insecticides on predator wasps and parasitoids of the coffee leaf miner Leucoptera coffeella (Guérin-Mèneville & Perrottet), as well as the efficiency of the products to control this insect. Coffee plants of the cv. Mundo Novo, cultivated in commercial fields in the county of Campo Belo, MG, Brazil, were used. The experimental plot was made up of four rows with ten plants each. The insecticides tested were ethion (750 g a.i./ha), chlorpyrifos (720 g a.i./ha), betacyfluthrin (50 g a.i./ha), cypermethrin (120 g a.i./ha), triazophos (120 g a.i./ha) and cartap (500 g a.i./ha). In 2001, two sprayings were done (July and September) and another in 2002 (July). Every two weeks, coffee leaves (3rd or 4th pair) located in the medium third of the plants were collected. The number of eggs/60 leaves, live larvae/60 leaves, percentage of mined leaves, percentage of predation of mines and the number of emerged parasitoids were evaluated. There was observed the effective control of the coffee leaf miner by the evaluated insecticides. There were observed low predation indices. In general all tested insecticides were harmful to the coffee leaf miner.
KEY WORDS:
Coffee plant;
Leucoptera coffeella
; coffee leaf miner; integrated control; insecticides; selectivity
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