November 2023
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International Journal of Entomology Research
Experiments were conducted to investigate the antifeedant activity of leaf extracts of Wrightia tinctoria, Murraya koenigii, and Prosopis juliflora against teak leaf skeletonizer, Eutectona machaeralis Walk. The study was carried out from August 2021 to July 2022 in the Zoology laboratory of Tara Government Degree and PG College, Sangareddy (latitude 17.603666° and longitude 78.077221°) above the sea level of 496 meters. In this experiment, 1% methanol extracts of Wrightia tinctoria Murraya koenigii leaves and Prosopis juliflora leaves were used. Third instar larvae of Eutectona machaeralis were collected from the Teak plants in the college garden and reared in the laboratory. No choice method was followed. Among the plant extracts tested, Murraya koenigii showed the highest Antifeedant Index value (90.64 %). AFI values for Wrightia tinctoria and Prosopis juliflora were 38.22% and 42.28 % respectively. The experiment indicates that Leaf extracts of Murraya koenigii have high AFI values.