Seasonal occurrence and management of tobacco leaf eating caterpillar Spodoptera litura (Fab.) (Lepidoptera: Noctuidae) on soybean

Abstract

The study on Seasonal Occurrence and Management of Tobacco Leaf Eating caterpillar Spodoptera litura (Fab.) on Soybean was carried out during Kharif season 2018-19 under field condition of the Entomology Section, College of Agriculture Nagpur. Seasonal incidence of S. litura initiated during 30th standard week (0.20 larvae/mrl) gradually attained maximum (1.60 larvae/mrl) during 35th standard week. Population was decreased from 36th standard week onwards. Overall spinosad 45 SC @ 0.01% and fenvalerate 20 EC @ 0.01% was found statistically most significant in controlling the S. litura larval populations on soybean at 3rd, 7th and 14thdays after treatment. As regards to soybean grain yield, the application of spinosad 45 SC @ 0.01% and fenvalerate 20 EC @ 0.01% were found to be most effective treatments recording higher yield of 13.46 q/ha, 12.82 q/ha, respectively.