Toxicity of Imidacloprid 17.8%SL and Triflumezopyrim 10%SC to Rice Brown Planthopper Nilaparvata lugens

Authors

  • E. Priyadharshini Department of Agricultural Entomology; Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu
  • N. Muthukrishnan Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu
  • B. Vinothkumar Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu
  • N. Sathiah Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu
  • K. Prabakar Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu

DOI:

https://doi.org/10.55446/IJE.2021.140

Keywords:

Nilaparvata lugens, rice, triflumezopyrim 10%SC, imidacloprid 17.8%SL insecticide resistance, susceptibility, bioassay, seedling dip method, resistance ratio

Abstract

The rice brown planthopper Nilaparvata lugens (Stål.) is a threat to rice growers and it has developed resistance to many insecticides. Hence, newer molecules like triflumezopyrim 10%SC are available. Its toxicity has been investigated in this study, with four populations from Tamil Nadu along with imidacloprid 17.8%SL using rice seedling dip method. Lower LC50 values of 0.538 ppm and 0.280 ppm were observed with the susceptible populations against imidacloprid 17.8%SL and triflumezopyrim 10%SC, respectively. LC50 values were in range of 0.280-0.848 ppm for triflumezopyrim 10%SC indicating its superior toxicity. Nagapattinam population exhibited moderate resistance (15.36 folds) to imidacloprid 17.8%SL and low resistance (3.02 folds) to triflumezopyrim 10%SC.

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Published

2023-12-01

How to Cite

Priyadharshini, E., Muthukrishnan, N., Vinothkumar, B., Sathiah, N., & Prabakar, K. (2023). Toxicity of Imidacloprid 17.8%SL and Triflumezopyrim 10%SC to Rice Brown Planthopper <i>Nilaparvata lugens</i>. Indian Journal of Entomology, 85(4), 1047–1049. https://doi.org/10.55446/IJE.2021.140

Issue

Section

Research Communications

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