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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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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 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(5): 666-676
DOI: https://doi.org/10.20546/ijcmas.2018.705.081


Impact of Some New Generation Insecticides on Beneficial Rhizospheric Microorganisms in Rice Maize Cropping System
Abhijit Ghosal1*, Anushweta Hati2, Sujit Mal3, Anupam Mukherjee1 and Ananya Mukherjee2
1Sasya Shyamala Krishi Vigyan Kendra, RKMVERI, Narendrapur, West Bengal-700103, India
2IRDM Faculty Centre, RKMVERI, Narendrapur, West Bengal-700103, India
3Department of Agriculture Chemistry and Soil Science, Bankura Campus, BCKV, West Bengal, India
*Corresponding author
Abstract:

In modern agriculture there is a pivotal role of pesticides in pest management though, the side effect pesticides on soil biological system is non avoidable. Experimental result shows that imidacloprid recorded 21.42% increased azotobacter population while chlorpyrifos recorded 31.04% less azotobacter in comparison with untreated check. All the treatments showed negative impact on the rhizobium population and rate of growth inhibition was 30.81% to 55.18%; whereas the inhibition rate was ranged 22.08% to 54.37% in case of total bacteria population. Proliferation of fungal propagules gets hindered due to application of insecticides (14.02% to 43.22%). Propagation of fungal propagules was significantly decreased in soil treated with chlorpyrifos. Application of phorate, rynaxypyr and carbofuran also had an inhibitory effect to the growth and multiplication of fungal population. Vivid reduction of phosphate solubilising bacteria (PSB) population was noticed during 28 days after application of insecticides; rynaxypyr and imidacloprid pronounced 94.68% inhibition of growth in respect control followed by fipronil (90.68%). Azotobacter was found less susceptible in comparison to rhizobium, fungi and phosphate solubilizing bacteria.


Keywords: Chlopyrifos, Imidacloprid, Insecticides, Soil microorganisms
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How to cite this article:

Abhijit Ghosal, Anushweta Hati, Sujit Mal, Anupam Mukherjee and Ananya Mukherjee. 2018. Impact of Some New Generation Insecticides on Beneficial Rhizospheric Microorganisms in Rice Maize Cropping System.Int.J.Curr.Microbiol.App.Sci. 7(5): 666-676. doi: https://doi.org/10.20546/ijcmas.2018.705.081