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Effectiveness of some insecticides for the control of Bemisia tabaci (Gennadius) on tomato, Solanum lycopersicum L.

Abstract:

Bemisia tabaci (Hemiptera: Aleyrodidae) represents an important phytosanitary problem in tomato, mainly due to the transmission of diseases caused by Begomovirus. For management purposes potted tomato plants previously infested with B. tabaci under isolation were treated with: imidachloprid to the soil, imidachloprid to the foliage, monocrotofos, buprofezin, azadirachtin, Paecilomyces fumoso-rosea, surfactant and check. Alive and dead nymphs were counted and percentages of mortality at 0, 48 and 96h after treatment were calculated, followed by six weekly counts. Populations were lower in plants treated with imidachloprid to the soil, where the highest percentages of mortality were detected (P<0.05). The results suggest that imidachloprid could be rationally utilized in integrated pest management programs for tomato crops.