Ovicidal Action of Different Insecticides against Spodoptera frugiperda (JE Smith) Under Laboratory and Field Conditions Thejaswini Sanga, Hanumanthaswamy BC, Deshmukh Sharanabasappa S*, Soumya TM1, Mallikarjuna HB2, Kalleshwaraswamy CM Department of Entomology, College of Agriculture, Keladi Shivappa Nayaka University of Agricultural & Horticultural Sciences, Shivamogga – 577 204, Karnataka, India 1Department of Agronomy, College of Agriculture, Keladi Shivappa Nayaka University of Agricultural & Horticultural Sciences, Shivamogga – 577 204, Karnataka, India 2Department of Statistics, College of Agriculture, Keladi Shivappa Nayaka University of Agricultural & Horticultural Sciences, Shivamogga – 577 204, Karnataka, India *Correspondence: sharanabasappa@uahs.edu.in
Online Published on 14 December, 2023. Abstract The ovicidal potential of seven different insecticides against the eggs of Spodoptera frugiperda was studied under laboratory and field conditions. Among the insecticides, profenophos and thiodicarb were found to have the highest ovicidal effect under laboratory as well as field conditions. But, their efficacy to reduce the larval population under field conditions was not promising and lowest yield of 35.81 and 38.63 q ha-1, respectively, was recorded with profenophos and thiodicarb treated plots. Emamectin benzoate, chlorantraniliprole and spinetoram were found to be effective for management of FAW with moderate ovicidal action under field conditions with highest efficacy to control larval population, with yield of 57.58, 54.47 and 50.33 q ha-1. Since, FAW exhibits overlapping generations, insecticides having ovicidal effect without reduction of larval population are not effective in controlling the pest. Top Keywords Zea mays, Fall armyworm, Hatchability, Emamectin benzoate. Top |