Efficacy of Botanical Extracts Against Rice Stem Borer Scirpophaga Incertulas (Walker)


  • K. Nishanthini Department of Entomology, Faculty of Agriculture, Annamalai University, Chidambaram 608002, Tamil Nadu
  • M. Kandibane Department of Agricultural Entomology, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal 609603, UT of Puducherry




Rice, Scirpophaga incertulas, Garlic and Chilli Extract, Leaf Extracts, Bitter Apple, Ponneem, Thiamethoxam, Novaluron, Predatory Coccinellids, Spiders, Cost Benefits.


Efficacy of botanical extracts was evaluated against the rice stem borer Scirpophaga incertulas (Wlk.) at PAJANCOA and RI, Karaikal during kharif 2019 and rabi 2019-2020. The results revealed that thiamethoxam 25WG @ 100 g/ ha reduced incidence to 4.99% and 4.13% (52.15 and 61.80% reduction, respectively). Among the botanicals, garlic and chilli extract 5% reduced this to 5.69% and 5.48%. The predatory coccinellids and spiders were more in untreated check and it was found at par with garlic and chilli extracts at 5%, followed by five leaf extracts @10% and bitter apple leaf extract 10%. The benefit cost ratio (BCR) was maximum with thiamethoxam 25WG @ 100 g/ ha (1: 1.67 and 1: 2.10), followed by garlic and chilli extract 5% (1: 1.59 and 1:1.91).


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How to Cite

Nishanthini, K., & Kandibane, M. (2022). Efficacy of Botanical Extracts Against Rice Stem Borer <i>Scirpophaga Incertulas</i> (Walker). Indian Journal of Entomology, 84(2), 363–367. https://doi.org/10.55446/IJE.2021.105



Research Communications


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