Carbon sequestration and soil carbon pools in a rice?wheat cropping system: Effect of long-term use of inorganic fertilizers and organic manure

Effects of organic and inorganic manures on maize and their residual impact on soil physico-chemical properties

“…These findings are corroborated with the previous results in literature (Eghball et al, 2004;Huang et al, 2007;Agbede et al, 2008). Surface soil organic carbon buildup probably due to the addition of plant residues, root exudates, plant and root biomass in the surface layer that decreased with increased soil depth regardless of the manures applied (Brar et al, 2013). (Hao et al, 2008).…”

Organic substitution in fertilizer schedule: Impacts on soil health, photosynthetic efficiency, yield and assimilation in wheat grown in alluvial soil

“…However, the amount of crop residues returned to the soil depends on nature of crop, soil factor and crop management. Whereas, use of farm yard manure or green manure along with incorporation of crop residues effectively enhance soil carbon storage Brar et al, 2013).…”

Effect of Long Term Fertilization on Soil Carbon and Nitrogen Pools in Paddy Soil

“…This suggests that increasing management intensity in agriculture, especially with larger N inputs from fertilizer or manure application, could lead to a faster increase in soil N than C, resulting in lower soil C:N ratio. However, the decline in soil C:N ratio may not indicate increased plant N availability because TN is associated with the total silty+clay fraction (Brar et al, 2013). Soils with lower C:N ratios are prone to greater N losses through leaching (Ju et al, 2006;Yu et al, 2007;Shi et al, 2009;Zhou et al, 2010).…”

“…The bulk density in 0-25 cm depth decreased in the compost treatments (Compost and NPK + Compost), and was not different in the NPK compared to the Control. Organic input could reduce the bulk density in soil by addition of root and crop residues due to cementing action of organic acid and polysaccharides formed during the decomposition of organic residues by higher microbial activities (Brar et al, 2013, Hati et al, 2008. Also, there was documented well the effects of long-term fertilization on soil bulk density by some researchers (Bhattacharyya et al, 2004;Agbede et al, 2008;Rasool et al, 2008).…”