• Printed Journal
  • Indexed Journal
  • Refereed Journal
  • Peer Reviewed Journal
Journal of Pharmacognosy and Phytochemistry

Journal of Pharmacognosy and Phytochemistry

Vol. 9, Issue 2 (2020)

Influence of organic and synthetic fertilizers on soil carbon pool, soil aggregation and associated carbon fractions in conservation agriculture ecosystem: A review

Author(s):

SK Gupta, RK Naresh, M Sharath Chandra, Shaikh Wasim Chand, B Naveen Kumar and Pebbeti Chandana

Abstract:
The application of graded doses of NPK from 50% to 150% in the cropping system significantly enhanced SOC, and particulate organic C (POC) fractions in soil. The increase in these C fractions was greater when farmyard manure (FYM) was applied conjointly with 100% NPK. This treatment showed highest amount of SOC and POC in 0–45 cm soil depth. Manure application significantly increased the proportion of large macro-aggregates (> 2000 µm) compared with the control, while leading to a corresponding decline in the percentage of micro-aggregates (53–250 µm). Plots with NPK and NPK + FYM had more labile: recalcitrant C ratios in bulk soils than control, NP and N plots. The NPK+FYM plots also had highest recalcitrant C pools within macro-and micro-aggregates. Moreover, carbon fractions of soil organic carbon (SOC), particulate organic carbon (POC), microbial biomass carbon (MBC), and potential carbon mineralization (PCM). Aggregate proportion was greater in NTCW than in FSTCW in the 4.75- to 2.00-mm aggregate-size class at 0 to 5 cm but was greater in STW-F than in STCW in the 2.00- to 0.25-mm size class at 5 to 20 cm.
No direct or universal relationship was found between the aggregative factors induced by organic/synthetic input decomposition (binding molecules or decomposers of biomass) and temporal aggregate stability dynamics. This suggests the and can be improved by considering (i) the direct abiotic effect of some organic/synthetic products after the inputs, (ii) the initial biochemical characteristics of the organic/synthetic products and (iii) the effects of organic/synthetic products on the various mechanisms of aggregate breakdown. The application of synthetic fertilizers had no clear effect on SOC and N accumulation or their distribution in particle-size fractions. However, the combined application of pig manure and synthetic fertilizers enhanced the accumulation of SOC and N in all particle-size fractions, and led to a shift of SOC and N from fine to coarse particles. The application of synthetic fertilizers had no clear effect on SOC and N accumulation or their distribution in particle-size fractions. However, the combined application of manure and synthetic fertilizers enhanced the accumulation of SOC and N in all particle-size fractions, and led to a shift of SOC and N from fine to coarse particles. The paper reveals that the micro-aggregate protected C is promising for assessing the impact between manure and synthetic fertilizers long-term fertilization on SOC storage in conservation agriculture ecosystem of Typic Ustochrept soil.

Pages: 1038-1046  |  691 Views  285 Downloads


Journal of Pharmacognosy and Phytochemistry Journal of Pharmacognosy and Phytochemistry
How to cite this article:
SK Gupta, RK Naresh, M Sharath Chandra, Shaikh Wasim Chand, B Naveen Kumar and Pebbeti Chandana. Influence of organic and synthetic fertilizers on soil carbon pool, soil aggregation and associated carbon fractions in conservation agriculture ecosystem: A review. J Pharmacogn Phytochem 2020;9(2):1038-1046.

Important Publications Links
Journal of Pharmacognosy and Phytochemistry Pharmacognosy

Journal of Pharmacognosy and Phytochemistry

Call for book chapter