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O objetivo foi avaliar a eficiência de inseticidas à base de nim no controle da mariposa-oriental G. molesta em laboratório. A dieta artificial foi cortada em cubos e imersa nas caldas dos respectivos tratamentos; em seguida, lagartas recém-eclodidas foram transferidas para tubos de vidro, contendo os cubos de dieta tratados. Os produtos testados foram: NeemAzal-T/S®, Dalneem emulsionável®, Organic Neem® e Natuneem Agrícola® na concentração de 0,5% do produto comercial (p.c.) em comparação com o inseticida químico fenitrotion (Sumithion 500 CE®) a 0,15% p.c. e uma testemunha (água). Os inseticidas NeemAzal-T/S® e Dalneem emulsionável® apresentaram a mortalidade de 100% das lagartas, sendo eficientes no controle do inseto em condições de laboratório. Organic Neem® e Natuneem Agrícola® demonstraram menor atividade inseticida, ocasionando mortalidade de 73,5% e 22,5%, respectivamente; no entanto, afetaram significativamente a viabilidade larval.The objective was to evaluate the efficiency of neem insecticides in the control of oriental fruit moth Grapholita molesta at laboratory. The artificial diet was cut in cubes and immersed in the syrups of the respective treatments, soon afterwards, recently-emerged caterpillars were transferred, for glass tubes, containing the diet cubes treated. The tested products were: NeemAzal-T/S®, Dalneem emulsionável®, Organic Neem® and Natuneem Agrícola® in the concentration of 0.5% of the commercial product (p.c.) compared with the chemical insecticide fenitrotion (Sumithion 500 CE®) to 0.15% p.c. and a witness (water). The insecticides NeemAzal-T/S® and Dalneem emulsionável® presented a mortality of 100% of the caterpillars being efficient in the control of the insect in laboratory conditions. Organic Neem® and Natuneem Agrícola® demonstrated lower insecticidal activity, causing mortality of 73.5% and 22.5% respectively, however, significantly affect the larval viability

Comunicação científica eficiência de inseticidas à base de nim no controle de Grapholita molesta (Busck, 1916) (Lepidoptera: Tortricidae)