Vol. 11, Special Issue 9 (2022)

Study Design: Randomized Block Design (RBD), having 7 treatments which were replicated thrice in a net experimental area of 5 m x 5 m each. Nursery of rice variety BPT- 5204 transplanted after 25 days of sowing at 20 cm x 10 cm hill spacing. All the agronomic practices were followed during crop growth period.

Place and Duration of Study: The present experiment was conducted in Kharif 2018 and 2019 at Agriculture Research Station, Gangavathi, Karnataka, India.

Methodology: The experiment was conducted using Randomized Block Design (RBD), in the experimental farm of Agricultural research station, Gangavathi, Koppal.

Results: Due to an increase in environmental awareness, resurgence problems and health hazards, it is necessary to identify the effective as well as economical and ecofriendly chemical insecticides while rice plant compensates low percentage of dead hearts, but 1-3% loss of yield is expected for every percent of white ear head. Further, in case of Yellow stem borer results reveals that, significant control was found in case of control of white ear head with maximum reduction over control observed in treatment broflanilide 30% SC@ 25.20 g.a.i./ha (87.94% ROC), followed by broflanilide 30% SC @ 19.20 g.a.i/ha which recorded 84.59 per cent ROC. Conclusion: The pooled data on the efficacy of different treatment schedules of broflanilide 30% SC against major insect pest of Rice i.e. stem borer. All the treated plots provided significant reduction of pest infestation along with significant yield increase but the best protection and less impact on natural enemies was obtained from the plots treated with broflanilide 30% SC @ 25.2 g.a.i./ha and broflanilide 30% SC @ 19.5 g.a.i/ha followed by broflanilide 30% SC @ 13.2 g.a.i./ha. All the treatments were on par with each other and significantly superior over the other comparative treatments and untreated control regarding pest control.