Comparative efficacies of modules against major insect pests and natural enemies in rice (Oryza sativa)

ATANU SENI; K M MISHRA; RINI PAL

doi:10.56093/ijas.v92i7.122328

Authors

ATANU SENI Orissa University of Agriculture and Technology, Bhubaneswar, Odisha
K M MISHRA Odisha University of Agriculture and Technology, RRTTS, Chiplima, Sambalpur, Odisha 768 025, India
RINI PAL Odisha University of Agriculture and Technology, RRTTS, Chiplima, Sambalpur, Odisha 768 025, India

https://doi.org/10.56093/ijas.v92i7.122328

Keywords:

Economic analysis, leaf folder, Stem borer, plant hoppers, natural enemies, insecticide modules

Abstract

A field experiment was conducted at regional Research and Technology Transfer Station (OUAT), Chiplima,
Sambalpur, Odisha, during rainy season (kharif) 2019–20 to determine the comparative efficacies of various
insecticides and botanicals modules against major insect pests and natural enemies of rice (Oryza sativa L.). There
were 9 modules and overall data revealed that the all the treated plots recorded significantly lower per cent of dead
heart; white ear-head caused by stem borer; silver shoot caused by gall midge; leaf folder infested leaves and plant
hoppers. Among them, module consists of fipronil 5 sc @1500 ml/ha at 25–30 DAT, rynaxypyr 20 sc @150 ml/ha at
45–50 DAT and triflumezopyrim 106 sc @240 ml/ha at 65–70 DAT treated plot recorded significantly higher per cent
reduction of stem borer infestation, leaf folder, plant hoppers and produced higher grain yield than the other modules as well as highest benefit cost ratio B : C (1.89) and next best was carbosulfan 25 ec @875 ml/ha, rynaxypyr 20 sc @150 ml/ha and flonicamid 50 wg @150 g/ha containing module. So, the module containing fipronil, rynaxypyr and triflumezopyrim may be adopted for the effective management of major insect pests of rice and helps the farmers from unwanted spraying of insecticides many times.

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Author Biography

ATANU SENI, Orissa University of Agriculture and Technology, Bhubaneswar, Odisha

Department: Entomology

Entomologist, AICRIPÂ

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