Evaluation of different insecticides against leaf roller, Pyrausta coclesalis Walker (Lepidoptera: Pyraustidae) in bamboo

Abstract

Studies were carried out during 2021-2022 to evaluate toxicity levels of different insecticides against larvae of bamboo leaf roller Pyrausta coclesalis (Lepidoptera: Pyraustidae) are one of the most important group of leaf feeders on bamboo (Family: Poaceae) in Central India. Spinosad 45 SC (0.03%), profenofos 50 EC (0.04%), Cypermethrin 25 EC (0.03%), fenvalerate 20 EC (0.03%), chlorantraniliprole 18.5 SC (0.03%) and bio pesticide Azadirachtin 10000 PPM (0.05%) at the recommended concentration was evaluated against of bamboo leaf roller at the Division of Forest Protection, Tropical Forest Research Institute, Jabalpur, Madhya Pradesh, India. The study revealed that spinosad 45 SC (0.03%), profenofos 50 EC (0.03%) and cypermethrin 25 EC (0.03%) were effective with the maximum larval mortality of 91.66, 83.33 and 75 percent at 72 hours after treatment followed by fenvalerate 20 EC
(0.03%) and Chlorantraniliprole 18.5 SC (0.03%) which recorded similar mortality of 66.66 were at par to each other at the same period of observation. Among bio pesticide azadirachtin (0.05%) treatment recorded least larval mortality of leaf roller 58.33 percent at 72 hours after treatment.