National Academy of Agricultural Sciences (NAAS)
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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 |
Studying the dynamics of soil organic carbon (SOC) is important for understanding the C stabilization into different pools. Carbon sequestration in soils has the potential to curb global warming besides maintaining sustainability of agricultural system under tropical and subtropical climate. Thus, a 14-year old experiment was used to assess the impact of double rice cropping system with manuring and grades of fertilization on SOC sequestration and crop yield sustainability in an Inceptisol in southern India. There was significant decrease (p<0.05) in bulk density with increasing using organics over control. Sole FYM applied plots showed greater amount of C sequestration (3.9 Mg ha-1) followed by RDF+FYM (2.4 Mg ha-1) > RDF (1.1 Mg ha-1) > 150% RDF (1.0Mg ha-1) > fallow (0.3 Mg ha-1), but depleted in 50% RDF (-0.28 Mg ha-1) and control (-1.1 Mg ha-1). The increased dose of fertilization/ N increased amount of C sequestrated, followed sigmoid curve pattern. RDF+FYM treatment showed greater crop yield sustainability with good benefit: cost ratio.
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