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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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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 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
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 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(9): 384-389
DOI: https://doi.org/10.20546/ijcmas.2018.709.047


Microbial Biomass - Carbon (SMB-C) and Dehydrogenase Activity (DHA) in Wetland Rice Ecosystem
Prabha Susan Philip1*, R.K. Kaleeswari2 and K. Kumar3
1ICAR - National Bureau of Soil Survey and Land Use Planning, Regional Centre, Delhi -110012, India
2Department of Soil Science, 3Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Tamil Nadu, India
*Corresponding author
Abstract:

A field experiment was conducted in clay loam of Wetlands of TNAU farm, Coimbatore to study the impact of nutrient management technologies on Soil Microbial Biomass-Carbon (SMB-C) and Dehydrogenase Activity (DHA) of soil under lowland rice ecosystem. In the present investigation, integration of inorganics, Sesbania aculeata and biofertilizers have intensively triggered the microbial activities, which would have resulted in higher dehydrogenase activity. The better nutrient management leads to better crop productivity which results in incorporation of larger organic matter through root biomass or leaf fall, root exudates, etc. thereby influencing the C dynamics in soil. The nutrient level and moisture play a dominant positive role towards the dehydrogenase activity. The dehydrogenase activity and biomass carbon content tended to increase with the advancement in crop growth. The results from the correlation analysis have revealed that the soil nutrient status has a direct and significant role in enhancing the soil microbial and enzyme activities. Integrated use of inorganic fertilizers, Sesbania aculeata and Azolla orchestrates soil nutrient availability, biomass production, biochemical activities and favorable soil physical environment that facilitate effective carbon sequestration in lowland rice ecosystem.


Keywords: Soil microbial biomass carbon, Dehydrogenase activity, INM
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How to cite this article:

Prabha Susan Philip, R.K. Kaleeswari and Kumar, K. 2018. Microbial Biomass - Carbon (SMB-C) and Dehydrogenase Activity (DHA) in Wetland Rice Ecosystem.Int.J.Curr.Microbiol.App.Sci. 7(9): 384-389. doi: https://doi.org/10.20546/ijcmas.2018.709.047