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Akshatha, G.
- Resistance Monitoring of Helicoverpa armigera to Insecticides Across Locations of Karnataka
Abstract Views :96 |
PDF Views:69
Authors
M. Bheemanna
1,
S. G. Hanchinal
1,
L. Rajesh Chowdary
2,
G. Akshatha
1,
B. Kariyanna
1,
B. V. Patil
1
Affiliations
1 University of Agricultural Sciences, College of Agriculture, Raichur 584104, Karnataka, IN
2 Agriculture Research Station, Acharya NG Ranga Agricultural University, Darsi 523247, Andhra Pradesh, IN
1 University of Agricultural Sciences, College of Agriculture, Raichur 584104, Karnataka, IN
2 Agriculture Research Station, Acharya NG Ranga Agricultural University, Darsi 523247, Andhra Pradesh, IN
Source
Indian Journal of Entomology, Vol 84, No 1 (2022), Pagination: 71-76Abstract
This study evaluates the toxicity of eight insecticides against Helicoverpa armigera (Hubn.). These include conventional and newer molecules which are being used on a large scale in six districts (Raichur, Kalaburagi, Bidar, Dharwad, Ballari, Bengaluru and Gangavathi) of north eastern Karnataka. The results revealed that the least LC50 value was observed in chlorantraniliprole 18.5%SC (0.17- 0.39 ppm- 2014-15; 0.19-0.43 ppm- 2015-16; and 0.70-0.94 ppm- 2016-17. Maximum LC50 value was observed with chlorpyriphos 20%EC (35.16-41.08; 37.35-43.27; and 36.02- 41.94 ppm). The order of toxicity was chlorantraniliprole > emamectin benzoate > flubendiamide > spinosad > thiodicarb > methomyl > profenophos > chlorpyriphos. These results reveal that rotation of conventional insecticides along with the new insecticides might be more effective.Keywords
Helicoverpa armigera, insecticide toxicity, N-E Karnataka, topical bioassay LC50 values, chlorantraniliprole, chlorpyriphos, resistance managementFull Text
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