Abstract

The control of Trialeurodes vaporariorum on tomato with Encarsia formosa is influenced by the use of insecticides. Nine days after allowing E. formosa adults to lay their eggs in T. vaporariorum nymphs on tomato plants, insecticide solutions (abamectin, mineral oil, acetamiprid, an industrial detergent and imadacloprid) were applied at the highest recommended dosages to tomato leaflets in Petri dishes using a Potter tower (four replicates, each involving 20 parasitized nymphs). Adult parasitoids began to emerge on day 7 post-application; this lasted 3-4 days, peaking on day 9 post-application. All the tested products killed the E. formosa pupae (an effect significantly different (P

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