International Journal of Entomology Research

Authors
Karthikeyan Rajuponnu, Ayysamy Regupathy

Abstract
Bio-efficacy of various insecticides were evaluated in Okra at two season in Vilacherri, Madurai (I year: August 2015 to December 2015 and II Year: August 2016 to December 2016) of Tamil Nadu. The new formulation of emamectin benzoate 1.9 EC was evaluated at different doses (5.00, 6.75, 8.50 and 11.00 g a.i. ha^-1) along with two standard standard checks, pyridalyl 10 EC (50 g a. i. ha^‑1) and lamda cyhalothrin 5 CS (15 g a.i. ha^‑1) for comparision and untreated control against shoot and fruit borer in Okra eco-system. The fruit borer infestation was recorded prior to spraying and at 3, 7, 10 and 14 days after each spraying from ten randomly selected plants in each treatment. The lowest mean percent fruit damage was recorded in plots treated with Emamectin Benzoate 1.9 EC at 11.00 g a.i. ha^‑1 followed by emamectin benzoate 1.9 EC at, 8.50 and 6.75 g a.i. ha^‑1.