Soil organic carbon increment sources and crop yields under long‐term conservation tillage practices in wheat‐maize systems

2020 ◽  
Vol 31 (9) ◽  
pp. 1138-1150 ◽  
Author(s):  
Zhen Liu ◽  
Tianping Gao ◽  
Shenzhong Tian ◽  
Hengyu Hu ◽  
Geng Li ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Crop Yields ◽  
Conservation Tillage ◽  
Tillage Practices

Long-term Conservation Tillage Effect on Soil Organic Carbon and Available Phosphorous Content in Vertisols of Central India

2016 ◽  
Vol 5 (4) ◽  
pp. 353-361 ◽  
Author(s):  
V. Kushwa ◽  
K. M. Hati ◽  
Nishant K. Sinha ◽  
R. K. Singh ◽  
M. Mohanty ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Conservation Tillage ◽  
Central India ◽  
Phosphorous Content

Effects of Conventional Tillage and Conservation Tillage on Soil Organic Carbon

2013 ◽  
Vol 726-731 ◽  
pp. 3832-3836
Author(s):  
Song Wei Jia
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Agricultural Soil ◽  
Carbon Sink ◽  
Conservation Tillage ◽  
Terrestrial Ecosystem ◽  
Warming Trend ◽  
Conventional Tillage ◽  
Soil Tillage ◽  
Tillage Practices

For the last decades, because of increasing attention to global change, the carbon cycle in the terrestrial ecosystem has become a hotspot problem for every country. It has 1.6 Pg/a C to release into atmosphere because of the irrational land-use, quickening the step of global warming trend. But agricultural soil has the double-sword effects. If improper soil tillage practices are adopted, agricultural soil may become the source of carbon dioxide in the atmosphere. And if adopting effective management measurement and scientific tillage technology, agricultural soil may become carbon sink. This paper reviewed the effects of conventional tillage and conservation tillage on soil organic carbon (SOC), and found that conservation tillage has a huge potential for sequestrating organic carbon compared with conventional tillage. Finally, the important significance of agriculture soil carbon sequestration was discussed in detail.

Changes in soil organic carbon fractions and residence time five years after implementing conventional and conservation tillage practices

2020 ◽  
Vol 200 ◽  
pp. 104632
Author(s):  
Mehdi Rahmati ◽  
Iraj Eskandari ◽  
Mehdi Kouselou ◽  
Vali Feiziasl ◽  
Gholam Reza Mahdavinia ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Residence Time ◽  
Conservation Tillage ◽  
Carbon Fractions ◽  
Tillage Practices ◽  
Organic Carbon Fractions ◽  
Soil Organic Carbon Fractions

Sequestration of carbon and changes in soil quality under conservation tillage on light-textured soils in Australia: a review

2003 ◽  
Vol 43 (4) ◽  
pp. 325 ◽  
Author(s):  
K. Y. Chan ◽  
D. P. Heenan ◽  
H. B. So
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Quality ◽  
Soil Structure ◽  
Conservation Tillage ◽  
Conventional Tillage ◽  
Continuous Cropping ◽  
Ecological Zones ◽  
Long Term Changes

Light-textured soils (<35% clay) make up more than 80%, by area, of cropping soils in Australia. Many have inherent soil physical problems, e.g. hardsetting, sodicity and low organic carbon levels. Maintenance and improvement of soil organic carbon levels are crucial to preserving the soil structure and physical fertility of these soils.A review of field trials on conservation tillage (3–19 years duration) on these soils in southern Australia revealed that significantly higher soil organic carbon levels compared with conventional tillage were found only in the wetter areas (>500 mm) and the differences were restricted to the top 2.5–10.0 cm. The average magnitude of the difference was lower than that reported in the USA. The lack of a positive response to conservation tillage is probably a reflection of a number of factors, namely low crop yield (due to low rainfall), partial removal of stubble by grazing and the high decomposition rate (due to the high temperature). There is evidence suggesting that under continuous cropping in the drier areas, the soil organic carbon level continues to decline, even under conservation tillage.Better soil structure and soil physical properties, namely macro-porosity, aggregate stability and higher infiltration have been reported under conservation tillage when compared with conventional tillage. However, little information on long-term changes of these properties under conservation tillage is available. As many of these soil qualities are associated directly or indirectly with soil organic carbon levels, the lack of significant increase in the latter suggests that many of these improvements may not be sustainable in the longer term, particularly in the drier areas. Continuous monitoring of long-term changes in the soil organic carbon and soil quality under conservation tillage in different agro-ecological zones is needed.

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