Long-term manuring and fertilization effects on soil organic carbon pools under a wheat–maize cropping system in North China Plain

Abstract

The

Organic Carbon Contents and Stocks in Particle Size Fractions of a Typic Hapludox Fertilized With Pig Slurry and Soluble Fertilizer

“…Pig slurry applied at rates of 50 m 3 ha -1 yr -1 and higher resulted in larger TOC stocks than fertilization with SF only, although both provided similar amounts of N, P and K. Similar results were reported by Gong et al (2009) in successive cultivation of maize and wheat for about 17 years, in a flooded Neosol in northern China. The authors observed a greater TOC increase when applying organic and mixed fertilizer than with exclusively soluble sources (urea, triple superphosphate and potassium sulfate).…”

Improvement in Soil Physical, Chemical and Microbiological Properties during Cropping Cycles under Different Nutrient Managements in Western Himalayas

“…Apparently, application of only fertilizers did not increase SOC content over long-term cropping. This observation was consistent with that of Rudrappa et al, (2005), Gong et al, (2009), Li et al, (2010 who recorded increase in carbon fractions under organic treatment which was attributed to the availability of additional mineralisable and readily hydrolysable carbon resulting in higher microbial activity (Chan et al, 2001). The inclusion of legumes in cropping systems had beneficial effect on carbon distribution of different soil carbon pools.…”

Effects of cattle manure compost combined with chemical fertilizer on topsoil organic matter, bulk density and earthworm activity in a wheat–maize rotation system in Eastern China

“…Serious losses of SOM have deteriorated soil quality and crop productivity, which has spurred scientist to explore ways to restore SOM Ding et al, 2011). Studies have shown that maintaining SOM at optimum level can be achieved by fertilization practices (Zebarth et al, 1999;Wu et al, 2004;Yang et al, 2005;Blair et al, 2006;Verma and Sharma, 2007;Purakayastha et al, 2008;Gong et al, 2009). However, perhaps as cost saving measure, more and more chemicals have been added to soils, which would further degrade soil quality.…”