scholarly journals Chemical composition of soil organic carbon changed by long-term monoculture cropping system in Chinese black soil

2018 ◽  
Vol 64 (No. 11) ◽  
pp. 557-563 ◽  
Author(s):  
Yunfa Qiao ◽  
Shujie Miao ◽  
Yingxue Li ◽  
Xin Zhong
Keyword(s):  
Chemical Composition ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Relative Proportion ◽  
Cropping System ◽  
Black Soil ◽  
Chemical Compositions ◽  
Crop Species ◽  
Rotation System

Monoculture is common to meet commodity grain requirements in Northeast China. The effect of long-term monoculture on chemical composition of soil organic carbon (SOC) remains unclear. This study was done to evaluate how changes in chemical compositions of SOC responded to long-term monoculture. To achieve this objective, the chemical compositions of SOC in maize-soybean rotation, continuous soybean and continuous maize were characterized with the nuclear magnetic resonance technique. Two main components, O-alkyl and aromatic C, showed a wider range of relative proportion in monoculture than rotation system across soil profiles, but no difference was observed between two monoculture systems. Pearson’s analysis showed a significant relationship between plant-C and OCH<sub>3</sub>/NCH, alkyl C or alkyl O-C-O, and the A/O-A was closely related to plant-C. The findings indicated a greater influence of monoculture on the chemical composition of SOC compared to rotation, but lower response to crop species.

Impact of Long-Term No-Tillage and Cropping System Management on Soil Organic Carbon in an Oxisol: A Model for Sustainability

2008 ◽  
Vol 100 (6) ◽  
pp. 1787-1787 ◽  
Author(s):  
Ademir Calegari ◽  
W. L. Hargrove ◽  
Danilo Dos Santos Rheinheimer ◽  
Ricardo Ralisch ◽  
Daniel Tessier ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Cropping System ◽  
System Management ◽  
No Tillage

scholarly journals Differences in Chemical Composition of Soil Organic Carbon Resulting From Long-Term Fertilization Strategies

PLoS ONE ◽  
2015 ◽  
Vol 10 (4) ◽  
pp. e0124359 ◽  
Author(s):  
Zengqiang Li ◽  
Bingzi Zhao ◽  
Qingyun Wang ◽  
Xiaoyan Cao ◽  
Jiabao Zhang
Keyword(s):  
Chemical Composition ◽  
Organic Carbon ◽  
Soil Organic Carbon

LONG-TERM EFFECT OF PULSES AND NUTRIENT MANAGEMENT ON SOIL ORGANIC CARBON DYNAMICS AND SUSTAINABILITY ON AN INCEPTISOL OF INDO-GANGETIC PLAINS OF INDIA

2012 ◽  
Vol 48 (4) ◽  
pp. 473-487 ◽  
Author(s):  
P. K. GHOSH ◽  
M. S. VENKATESH ◽  
K. K. HAZRA ◽  
NARENDRA KUMAR
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Mung Bean ◽  
Nutrient Management ◽  
Surface Soil ◽  
Cropping System ◽  
Carbon Pool ◽  
Gangetic Plains ◽  
Carbon Fractions

SUMMARYContinuous cultivation of rice–wheat cropping system in the Indo-Gangetic plains is under threat with decline in soil organic carbon (SOC), total factor productivity and overall sustainability. Pulses, an important component of crop diversification, are known to improve soil quality through their unique ability of biological N2 fixation, leaf litter fall and deep root system. Therefore, the effect of inclusion of pulses in the puddled rice system under organic and inorganic amendments on SOC pool and its management indices were evaluated in a long-term experiment after seven cropping cycles. The results indicated that inclusion of pulses in the rice-based system improved the SOC content, being greater in surface soil (0–20 cm) and declining with soil depth. Among the four carbon fractions determined, less labile carbon fraction (Cfrac3) was the dominant fraction in the puddled rice system, particularly under organic treatments, indicating that it is possible to maintain organic carbon for longer time in this system. The rice–wheat–mung bean system resulted in 6% increase in SOC and 85% increase in soil microbial biomass carbon as compared with the conventional rice–wheat system. Application of crop residues, farm yard manure (5 t ha−1) and biofertilisers had greater amount of carbon fractions and carbon management index (CMI) over control and the recommended inorganic (NPKSZnB) treatment in the soil surface, particularly in the system where pulses are included. Interestingly, in the puddled rice system, passive carbon pool is more in surface soil than deeper layers. The relative proportion of active carbon pool in surface layer (0–20 cm) to subsurface layer (20–40 cm) was highest in rice–wheat–rice–chickpea (1.14:1) followed by rice–wheat–mung bean (1.07:1) and lowest in the rice–wheat system (0.69:1). Replacing wheat with chickpea either completely or during alternate year in the conventional rice–wheat system also had positive impact on SOC restoration and CMI. Therefore, inclusion of pulses in the rice-based cropping system and organic nutrient management practices had significant impact on maintaining SOC in an Inceptisol of the Indo-Gangetic plains of India.

Sign in / Sign up

Export Citation Format

Share Document