International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 9, Issue:3, March, 2020

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(3): 2542-2550

Screening of New Insecticide Molecules against Cotton Mealybug, Phenacoccus solenopsis Tinsley (Homoptera: Pseudococcidae)
T. D. Nidheesh1*, A. H. Jayappa1, A. N. Shylesha2, N. Nagaraju3 and H. M. Jayadeva4
1Department of Agricultural Entomology, College of Agriculture, University of
Agricultural Sciences, GKVK, Bengaluru-65, India
2ICAR-National Bureau of Agricultural Insect Resources, Hebbal, Bengaluru-24, India
3Department of Plant Pathology, College of Agriculture, University of Agricultural Sciences, GKVK, Bengaluru-65, India
4Department of Agronomy, College of Agriculture, University of Agricultural
Sciences, GKVK, Bengaluru-65, India
*Corresponding author

A laboratory experiment was carried out to evaluate the bio-efficacy of selected new generation insecticides viz., Pymetrozine 50% WG, Flonicamid 50% WG, Dinotefuran 20% SG, Thiamethoxam 25% WG,Azadirachtin 1% EC,Buprofezin 25% SC and Profenophos 50% EC against cotton mealybug, Phenacoccus solenopsis Tinsley by adopting normal bioassay techniques. A preliminary trial with three different dosages (below recommended, recommended and above recommended) were tried for each of the insecticidal treatments. The mortality of mealybugs was found to be more in the treatment with recommended dosage when compared to below recommended dose. Out of the seven insecticides screened against P. solenopsis under laboratory conditions, neonicotinoids such as thiamethoxam 25% WG @ 0.40 g/l and dinotefuran 20% SG @ 0.25 g/l were found to be most effective in reducing the mealybug population at recommended and above recommended doses. Thiamethoxam and dinotefuran recorded the highest mortality of mealybugs (97.78 and 90.56 %, respectively) after imposition of treatments across different durations of exposure.

Keywords: Phenacoccus solenopsis, thiamethoxam 25% WG, dinotefuran 20% SG, profenophos 50% EC

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How to cite this article:

Nidheesh. T. D., A. H. Jayappa, A. N. Shylesha, N. Nagaraju and Jayadeva. H. M. 2020. Screening of New Insecticide Molecules Against Cotton Mealybug, Phenacoccus Solenopsis Tinsley (Homoptera: Pseudococcidae).Int.J.Curr.Microbiol.App.Sci. 9(3): 2542-2550. doi:
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