Incidence and management of Helicoverpa armigera (Hubner) on tomato, Lycopersicon esculentum Miller at Trans Yamuna region Prayagraj (U.P)

Abstract

A field experiment was conducted during 2018-19 at the Agricultural Research Farm of Prayagraj College of Agriculture, Sam Higginbottpm, University of Agriculture, Technology and Sciences” Prayagraj. Synthetic insecticides and Bio pesticides reduced pod borer damage significantly. The results on the percent infestation of pod borer on mean (7th and 14th) days after spraying revealed that all the treatments were significantly superior over control (8.13) per cent infestation. Among the various treatments, least number of larvae (0.35 larvae/plant) was observed at 14 days spray in Cypermethrin. The lowest percent infestation (10.02%) of pod borer was recorded in Cypermethrin followed by Beauveria bassiana (12.92%) which proved to ne next best effective treatment in evaluating the least fruit damage The highest fruit yield (146.81 q/ha) was recorded with the treatment Cypermethrin which was significantly higher than other treatments. However, Beauveria bassiana recorded second highest fruit yield (142.58 q/ha) which proved to be second best and effective treatments. The lowest yield of 107.25 q/ha was found in Sixer but higher than control (75.07 q/ha). The maximum B:C ratio was found in the treatment of Cypermethrin (1: 2.51) followed by Beauveria bassiana (1:2.43) and Verticillium lecanii (1:2.22). The other treatments was profitable over control.