Effect of Winter Crop Cultivation on Soil Organic Carbon and Physico-chemical Properties Under Different Rice-forage Cropping Systems in Paddy Soil

Insufficient characterization of soil organic carbon (SOC) dynamics in semi-arid climates contributes uncertainty to SOC sequestration estimates. This study estimated changes in SOC (0–30 cm depth) due to variations in manure management, tillage regime, winter cover crop, and crop rotation in southern Idaho (USA). Empirical data were used to drive the Denitrification Decomposition (DNDC) model in a “default” and calibrated capacity and forecast SOC levels until 2050. Empirical data indicates: (i) no effect (p = 0.51) of winter triticale on SOC after 3 years; (ii) SOC accumulation (0.6 ± 0.5 Mg ha–1 year–1) under a rotation of corn-barley-alfalfax3 and no change (p = 0.905) in a rotation of wheat-potato-barley-sugarbeet; (iii) manure applied annually at rate 1X is not significantly different (p = 0.75) from biennial application at rate 2X; and (iv) no significant effect of manure application timing (p = 0.41, fall vs. spring). The DNDC model simulated empirical SOC and biomass C measurements adequately in a default capacity, yet specific issues were encountered. By 2050, model forecasting suggested: (i) triticale cover resulted in SOC accrual (0.05–0.27 Mg ha–1 year–1); (ii) when manure is applied, conventional tillage regimes are favored; and (iii) manure applied treatments accrue SOC suggesting a quadratic relationship (all R2 > 0.85 and all p < 0.0001), yet saturation behavior was not realized when extending the simulation to 2100. It is possible that under very large C inputs that C sequestration is favored by DNDC which may influence “NetZero” C initiatives.

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Differences in soil organic carbon stocks and fraction distributions between rice paddies and upland cropping systems in China

Journal of Soils and Sediments ◽

10.1007/s11368-013-0789-9 ◽

2013 ◽

Vol 14 (1) ◽

pp. 89-98 ◽

Cited By ~ 15

Author(s):

Shan Huang ◽

Xiaohua Pan ◽

Jia Guo ◽

Chunrong Qian ◽

Weijian Zhang

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Cropping Systems ◽

Carbon Stocks ◽

Rice Paddies ◽

Soil Organic Carbon Stocks

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Differences of soil enzyme activities and its influencing factors under different flooding conditions in Ili Valley, Xinjiang

PeerJ ◽

10.7717/peerj.8531 ◽

2020 ◽

Vol 8 ◽

pp. e8531 ◽

Cited By ~ 1

Author(s):

Yulu Zhang ◽

Dong Cui ◽

Haijun Yang ◽

Nijat Kasim

Keyword(s):

Microbial Biomass ◽

Organic Carbon ◽

Soil Organic Carbon ◽

Total Phosphorus ◽

Enzyme Activities ◽

Catalase Activity ◽

Microbial Biomass Carbon ◽

Chemical Properties ◽

Soil Enzyme ◽

Biomass Carbon

Background A wetland is a special ecosystem formed by the interaction of land and water. The moisture content variation will greatly affect the function and structure of the wetland internal system. Method In this paper, three kinds of wetlands with different flooding levels (Phragmites australis wetland (long-term flooding), Calamagrostis epigeios wetland(seasonal flooding) and Ditch millet wetland (rarely flooded)) in Ili Valley of Xinjiang China were selected as research areas. The changes of microbial biomass carbon, soil physical and chemical properties in wetlands were compared, and redundancy analysis was used to analyze the correlation between soil physical and chemical properties, microbial biomass carbon and enzyme activities (soil sucrase, catalase, amylase and urease). The differences of soil enzyme activities and its influencing factors under different flooding conditions in Ili Valley were studied and discussed. Result The results of this study were the following: (1) The activities of sucrase and amylase in rarely flooded wetlands and seasonally flooded wetlands were significantly higher than those in long-term flooded wetlands; the difference of catalase activity in seasonal flooded wetland was significant and the highest. (2) Redundancy analysis showed that soil organic carbon, dissolved organic carbon, total phosphorus and soil microbial biomass carbon had significant effects on soil enzyme activity (p < 0.05). (3) The correlation between soil organic carbon and the sucrase activity, total phosphorus and the catalase activity was the strongest; while soil organic carbon has a significant positive correlation with invertase, urease and amylase activity, with a slight influence on catalase activity. The results of this study showed that the content of organic carbon, total phosphorus and other soil fertility factors in the soil would be increased and the enzyme activity would be enhanced if the flooding degree was changed properly.

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Forage-Based Cropping Systems and Soil Organic Carbon Storage

Carbon Management in Tropical and Sub-Tropical Terrestrial Systems ◽

10.1007/978-981-13-9628-1_22 ◽

2019 ◽

pp. 363-376

Author(s):

Arvind Kumar Rai ◽

Srinivasan Ramakrishnan ◽

Nirmalendu Basak ◽

Parul Sundha ◽

A. K. Dixit ◽

...

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Carbon Storage ◽

Cropping Systems ◽

Soil Organic Carbon Storage ◽

Organic Carbon Storage

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Soil organic carbon and biological indicators of uncultivated vis-à-vis intensively cultivated soils under rice–wheat and cotton–wheat cropping systems in South-Western Punjab

Carbon Management ◽

10.1080/17583004.2020.1840891 ◽

2020 ◽

Vol 11 (6) ◽

pp. 681-695

Author(s):

Sandeep Sharma ◽

Pritpal Singh ◽

G. P. S. Sodhi

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Cropping Systems ◽

Biological Indicators ◽

Cultivated Soils

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Effects of deforestation on the properties of soil of Sal forests in Bangladesh

Dhaka University Journal of Biological Sciences ◽

10.3329/dujbs.v19i1.8945 ◽

1970 ◽

Vol 19 (1) ◽

pp. 63-72 ◽

Cited By ~ 2

Author(s):

Mohammad Zabed Hossain ◽

Mihir Lal Saha ◽

Chaman Binta Aziz ◽

Sirajul Hoque

Keyword(s):

Organic Carbon ◽

Moisture Content ◽

Soil Properties ◽

Chemical Properties ◽

Natural Forest ◽

Grass Species ◽

Forest Site ◽

Bacterial Colony ◽

Physico Chemical ◽

Sal Forest

This study examined the effect of deforestation on the soil properties (physico-chemical and bacterial) of the Sal (Shorea robusta Roxb. Ex Gaertn.) forests in Bangladesh. Physico-chemical properties and the bacterial colony counts of soil were studied by comparing a natural Sal forest site with deforested and planted with Menjium site, deforested and planted with Mahogoni site, as well as deforested but not planted but covered with profuse growth of Axonopus compressus grass species site. Moisture content was significantly lower in the deforested and planted with Menjium site and deforested and planted with Mahogoni site than the natural forest site and the deforested but not planted site. Total organic carbon, total nitrogen and available nitrogen contents were significantly lower in the natural forest site. Significantly higher number of bacterial colony and higher organic carbon and moisture contents were found in the deforested but not planted site indicating that both organic carbon and moisture content were important for microbial growth. The present study clearly showed that deforestation significantly altered the soil physico-chemical and bacterial communities of the Sal forests. It was also revealed that plantation with different exotic plants were found to be different in influencing soil properties. Key words: Bacterial colony; Deforestation effects; Sal forest; Soil physico-chemical properties DOI: http://dx.doi.org/10.3329/dujbs.v19i1.8945 DUJBS 2010; 19(1): 63-72

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Change in water extractable organic carbon and microbial PLFAs of biochar during incubation with an acidic paddy soil

Soil Research ◽

10.1071/sr14259 ◽

2015 ◽

Vol 53 (7) ◽

pp. 763 ◽

Cited By ~ 1

Author(s):

Ming Li ◽

Ming Liu ◽

Stephen Joseph ◽

Chun-Yu Jiang ◽

Meng Wu ◽

...

Keyword(s):

Organic Carbon ◽

Paddy Soil ◽

Reduction Rate ◽

Chemical Properties ◽

Nutrient Status ◽

Biological Properties ◽

Uv Absorbance ◽

Water Extractable Organic Carbon ◽

Microbial Plfas ◽

Water Extractable

Biochar has been considered to affect the transformation of soil organic carbon, soil microbial activity and diversity when applied to soil. However, the changes in chemical and biological properties of biochar itself in soil have not been fully determined. In this study, various biochar samples were obtained from three crop straws (rice, peanut and corn) and two wood chips (bamboo and pine), and incubated with an acidic paddy soil. We examined the changes of biochar water extractable organic carbon (WEOC) content and its ultraviolet (UV) absorbance at 280 nm during incubation period, and also investigated the microbial phospholipid fatty acids (PLFAs) profile of biochar after 75 days of incubation. The WEOC content of biochars decreased at the end of incubation, except for the biochar pyrolysed from bamboo chips at 400°C. An average reduction rate of 61.2% in WEOC concentration for straw biochars occurred within the first 15 days, while no significant change was observed for all biochars between day 15 and 45, and a slight increase in WEOC occurred for all biochars in the last 30 days. There was a positive relationship between biochar WEOC content and its UV absorbance properties. The microbial PLFAs concentrations of biochars varied from 15.56 to 60.35 nmol g–1, and there was a greater abundance in content and species for corn straw biochars than for the other types of biochars. General bacteria were the dominant microbial group that colonised biochar sample, while gram-positive bacterial and fungi were less in abundance. The chemical properties of fresh biochar were well correlated with total PLFAs concentrations, and significantly related to the composition of microbial community. We concluded that the WEOC component of most biochars change within such short-term application to soil, and the WEOC in combined with the pH and nutrient status of biochar, can alter the type and abundance of microorganisms that colonised biochar.

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