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 carbon stabilization into different pools. Thus, a 25-year old experiment was used to assess the impact of double rice cropping system with addition of organics and grades of fertilization on labile carbon pools and crop yield sustainability in an Inceptisol in southern India. The total water stable aggregates (WSA) in the experimental soils ranged from 70.4 to 94.9% under different treatments. Geometric mean diameter (GMD) also exhibited similar trend which ranged from 1.32 to 1.42 mm. Aggregate ratio (AR) showed similar trend, with the highest values in soils under FYM treatment (8.76) but lowest values in soil under control (2.40). Application of organics had immense effect on soil aggregation and C sequestration. Mesoaggregates shared the maximum proportion of aggregate associated C (35.8%) followed by fine micro, coarse micro, coarse macro aggregates and silt + clay fractions constituting 26.2, 14.3, 12.5 and 11.2%, respectively.
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