Long-term manure amendments enhance neutral sugar accumulation in bulk soil and particulate organic matter in a Mollisol

In situ visualisation and characterisation of the capacity of highly reactive minerals to preserve soil organic matter (SOM) in colloids at submicron scale

“…Our results were used to quantify the effect of highly reactive Al and Fe minerals, led by the allophane (41.38%) and ferrihydrite composition (25.68%), which were consistent with studies by a selective extraction method (Yu et al, 2012;Zhang et al, 2013a;Wen et al, 2014). This result could be because with a shift in microbial metabolism and enzyme production, the meta-stable highly reactive Al and Fe minerals (e.g., allophane and ferrihydrite) could form stable organo-mineral bonds through anion and inner-sphere ligand-exchange reactions, thus being well-suited to physically protect the geometries (Rasmussen et al, 2006;Schmidt et al, 2011;Xie et al, 2014).…”

Soil microbial community structure and function are significantly affected by long-term organic and mineral fertilization regimes in the North China Plain

“…Enhanced SOC and TN under long term mineral fertilizer application may be an indirect effect of higher plant biomass production and C return to soils (Giacometti et al, 2013), although this is not always the case. Xie et al (2014) found no increase in soil organic matter relative to the control in a 25-year long continuous mineral fertilization experiment. Geisseler and Scow (2014) summarized 107 datasets of 64 long-term = 1/2SMF+1/2SMA, mixed treatment with fertilizer and manure both applied at half the rates for the SMF and SMA treatments;^ = SMA, mixed treatment with fertilizer and manure both applied at half the rates for the SMF and SMA treatments; Â = DMF, double mineral fertilizer treatment; * = DMA, double organic manure treatment).…”

“…The 25-year repeated manure applications led to considerably higher SOC and TN contents, which can be attributed to annual additions of manure and crop residues (Xie et al, 2014). Enhanced SOC and TN under long term mineral fertilizer application may be an indirect effect of higher plant biomass production and C return to soils (Giacometti et al, 2013), although this is not always the case.…”

Vegetable yields and soil biochemical properties as influenced by fertilization in Southern China

“…A meta-analysis of 274 samples that were collected from 44 paddy field experiments in South China showed that the SOC was improved more under organic fertilization . This is probably because that the additions of manure increased the duration for C accumulation and built up soil C pools (Xie et al, 2014).…”