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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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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.2017.6(12): 990-998
DOI: https://doi.org/10.20546/ijcmas.2017.612.110


Effect of Pyrasosulfuron Ethyl, Bensulfuron Methyl, Pretilachlor and Bispyribac Sodium on Soil Microbial Community and Soil Enzymes under Rice-Rice Cropping System
A. Ramalakshmi*, P. Murali Arthanari and C. Chinnusamy 
Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore-841 003, Tamil Nadu, India
*Corresponding author
Abstract:

The effect of pyrasosulfuron ethyl (10% WP), bensulfuron methyl (0.6%), pretilachlor and POE bispyribac sodium (10% EC) on soil microflora and soil enzymes under rice-rice ecosystem in long term herbicide trial were studied during Rabi 2015-16 and 2016-17 and Kharif 2015 and 2016. The soil samples were collected from the experiments conducted at Wetland, TNAU by AICRP-Weed Management unit, Coimbatore. The results of the pooled data of two season revealed that all the four herbicides viz., PE pyrasosulfuron ethyl (10% WP), bensulfuron methyl (0.6%), pretilachlor and POE bispyribac sodium (10% EC) reduced the soil microflora except actinobacteria and soil enzymes upto 5 days after herbicide application. Simultaneouly the mciroflora were increased 10 times after 15 days herbicide application when compared with hand weeding. The treatment, bensulfuron methyl (0.6%) along with pretilachlor (6.6%) fb hand weeding significantly increased the microbial population and soil enzymes during Rabi seasons. In kharif, pyrasosulfuron ethyl fb bispyribac sodium recorded the highest microbial population followed by pyrasosulfuron ethyl fb hand weeding. But the activity of soil enzymes viz., alkaline phosphatase and dehydrogenase and Urease were significantly highest in the treatment, pyrasosulfuron ethyl fb hand weeding followed by PE pyrasosulfuron ethyl fb POE bispyribac sodium compraed with unweeded check. The phylogenetic analysis of 16s rDNA from 20 bacterial colonies revealed that the all the 20 bacterial colonies were identifed as Bacillus sp.


Keywords: Soil microflora, Soil enzymes, Pre and Post emergence Herbicides, Rice-rice.
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How to cite this article:

Ramalakshmi, A., P. Murali Arthanari and Chinnusamy, C. 2017. Effect of Pyrasosulfuron Ethyl, Bensulfuron Methyl, Pretilachlor and Bispyribac Sodium on Soil Microbial Community and Soil Enzymes under Rice-Rice Cropping System.Int.J.Curr.Microbiol.App.Sci. 6(12): 990-998. doi: https://doi.org/10.20546/ijcmas.2017.612.110