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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(10): 1450-1460
DOI: https://doi.org/10.20546/ijcmas.2018.710.162


Biosynthesis of Green Silica Nanoparticles and Its Effect on Cotton Aphid, Aphis gossypii Glover and Mealybug, Phenacoccus solenopsis Tinsley
G. Pavitra1*, N. Sushila1, A.G. Sreenivas1, J. Ashok1 and H. Sharanagouda2
1Department of Agricultural Entomology, College of Agriculture, UAS, Raichur, Karnataka, India
2Department of Processing and Food Engineering, CAE, UAS, Raichur, Karnataka, India
*Corresponding author
Abstract:

Sucking pests have become a serious problem in Bt cotton. The cotton aphid and mealybug reduces its yield to the extent of 30-40 per cent and 40-50 per cent, respectively. In this context an investigation was carried out on synthesis of silica nanoparticles from rice husk and its impact against cotton aphid and mealybug during 2017-18 at centre for nanotechnology lab, UAS Raichur. For comparison purposes, metal silica nanoparticles and dinotefuran 20% SG was used as an insecticide. The biosynthesised nanoparticles were characterized by zetasizer (size: 26.19 nm), UV-visible spectroscopy (wavelength: 310 nm), X-ray diffraction (absorption at 2θ=15-25⁰ region) and scanning electron microscope (agglomerated form with spherical shape). At five days after treatment green silica nanoparticle at 2000 ppm caused cent per cent mortality of both cotton aphid and mealybug. Pesticidal activity of silica nanoparticles revealed that at 2000 ppm concentration, maximum mortality of insects was recorded and hence can be selectively used for suppression of the pest.


Keywords: Rice husk, Silica nanoparticles, Cotton, Aphis gossypii, Phenacoccus solenopsis
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How to cite this article:

Pavitra, G., N. Sushila, A.G. Sreenivas, J. Ashok and Sharanagouda, H. 2018. Biosynthesis of Green Silica Nanoparticles and Its Effect on Cotton Aphid, Aphis gossypii Glover and Mealybug, Phenacoccus solenopsis TinsleyInt.J.Curr.Microbiol.App.Sci. 7(10): 1450-1460. doi: https://doi.org/10.20546/ijcmas.2018.710.162