International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 4
First page : (1368) Last page : (1375)
Article doi: http://dx.doi.org/10.18782/2320-7051.5665
Effect of Long-Term Use of Different Source of Organics on Soil Aggregate Fractions
A. Krishna Chaitanya1*, Biswapati Mandal1, Gora Chand Hazra1, Prasanta Kumar Bandyopadhyay1 and Mahadev Pramanik2
1Department of Agricultural Chemistry and Soil Science
2Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Kalyani-741235, West Bengal
*Corresponding Author E-mail: krch3737@outlook.com
Received: 2.08.2017 | Revised: 12.08.2017 | Accepted: 13.08.2017
ABSTRACT
Studying the aggregate fractions of soil is important for understanding the C stabilization. Carbon sequestration in soils has the potential to curb global warming besides maintaining sustainability of agricultural system under tropical and subtropical climate. Thus, a 28-year old experiment was used to assess the impact of rice-wheat cropping system with different sources of organics and grades of fertilization on aggregate stability and aggregate associated carbon in an Inceptisol in India. Among the treatments, 50% RDF+FYM had the highest value of different size distributions of water stable aggregates (WSA) (>2000 µm, 2000-1000 µm, 1000-500 µm, 500-250 µm, 250-100 µm). Irrespective of the treatments, the mesoaggregates (MesoA,250-2000 µm) comprised of 22.6% of the total WSA compared to 72.6% as coarse macro aggregates (CMacA, > 2000µm) and 4.7% as coarse micro aggregates, (CMicA, 250-100 µm). Of the total aggregate associated C, macro aggregates (> 250 µm) had higher amounts (65.8%) compared to micro aggregates (< 250 µm, 34.2%).Application of organics increased C accumulation in different aggregates, the effect was more pronounced with macroaggregates than microaggregates.
Key words: Microaggregate, Aggregate cssociated carbon, Mesoaggregate.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Chaitanya, A.K., Mandal, B., Hazra, G.C., Bandyopadhyay, P.K. and Pramanik, M., Effect of Long-Term Use of Different Source of Organics on Soil Aggregate Fractions, Int. J. Pure App. Biosci.5(4): 1368-1375 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5665
