International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 9, Issue:11, November, 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(11): 3566-3572

Soil Carbon Fractions as Influenced by Long-Term Integrated Nutrient Management under Rice-Wheat Cropping System in Calcareous Soil of North Bihar
Md M. Alam, S. N. Suman*, Vipin Kumar, S. Jha, R. Laik,Kumar and Vandana Kumari
Department of Soil Science, RPCAU, Pusa, Samastipur, Bihar, India
*Corresponding author

A study was conducted in an ongoing field experiment started during Rabi 1988-89 in calcareous soil at Research Farm of Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar. The experimental design was split-plot with four fertilizer levels (0, 50, 100 & 150% NPK) in main plots and four levels of manures (no manures, compost @10 t ha-1, crop residues and compost @10 t ha-1 plus crop residues) in sub-plots. The present investigation was undertaken with objectives to investigate the effect of combined use of NPK and different organics (compost and crop residues) on oxidisable carbon fractions of soil. Application of fertilizers along with compost and crop residues resulted in significant buildup of soil organic carbon fractions. Very labile soil organic carbon was the maximum (3.75 g kg-1) in the treatment receiving both compost (10 t ha-1) and crop residues and it was 34.30% higher than that in the treatment receiving no manure application. The maximum non-labile soil organic carbon (6.06 g kg-1) was found to be in the treatment receiving both compost and crop residue and was 2.9, 3.41 and 36.48% higher than that in the treatments crop residue, Compost @ 10 t ha-1 and no manure application, respectively. The improvement in non-labile carbon fraction was more than labile carbon fractions suggesting higher carbon sequestration in the soil.

Keywords: Soil carbon fractions, Rice-wheat cropping

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How to cite this article:

Md M. Alam, S. N. Suman, Vipin Kumar, S. Jha, R. Laik, A. Kumar and Vandana Kumari. 2020. Soil Carbon Fractions as Influenced by Long-Term Integrated Nutrient Management under Rice-Wheat Cropping System in Calcareous Soil of North Bihar.Int.J.Curr.Microbiol.App.Sci. 9(11): 3566-3572. doi:
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