Soil aggregate‐associated organic carbon and nitrogen response to long‐term no‐till crop rotation, cover crop, and manure application

Author(s):  
Sangeeta Bansal ◽  
Xinhua Yin ◽  
Virginia Sykes ◽  
Jaehoon Lee ◽  
Sindhu Jagadamma
2020 ◽  
Vol 112 (4) ◽  
pp. 2519-2534 ◽  
Author(s):  
Sangeeta Bansal ◽  
Xinhua Yin ◽  
Hubert J. Savoy ◽  
Sindhu Jagadamma ◽  
Jaehoon Lee ◽  
...  

Soil Carbon ◽  
2014 ◽  
pp. 271-279 ◽  
Author(s):  
Amanda J. Ashworth ◽  
Fred L. Allen ◽  
Jason P. Wight ◽  
Arnold M. Saxton ◽  
Don D. Tyler

2016 ◽  
Vol 96 (4) ◽  
pp. 347-350 ◽  
Author(s):  
Elwin G. Smith ◽  
H. Henry Janzen ◽  
Lauren Scherloski ◽  
Francis J. Larney ◽  
Benjamin H. Ellert

After 47 yr of no-till and reduced summerfallow at Lethbridge, Alberta, soil organic carbon concentration and stocks increased 2.14 g kg−1 and 2.22 Mg ha−1, respectively, in the surface 7.5 cm layer. These findings confirmed the conservation value of reducing tillage and summerfallow. The annual changes were relatively small.


2014 ◽  
pp. 140505045536003
Author(s):  
Laura L. Van Eerd ◽  
Katelyn A. Congreves ◽  
Anne Verhallen ◽  
Adam Hayes ◽  
David C. Hooker

2021 ◽  
Vol 54 (2) ◽  
pp. 285-290
Author(s):  
V. A. Kholodov ◽  
V. P. Belobrov ◽  
N. V. Yaroslavtseva ◽  
M. A. Yashin ◽  
S. A. Yudin ◽  
...  

Author(s):  
João William Bossolani ◽  
Fabiana Lopes dos Santos ◽  
Hugo Henrique Andrade Meneghette ◽  
Izabela Rodrigues Sanches ◽  
Luiz Gustavo Moretti ◽  
...  

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 840 ◽  
Author(s):  
Ahmed Laamrani ◽  
Paul R. Voroney ◽  
Aaron A. Berg ◽  
Adam W. Gillespie ◽  
Michael March ◽  
...  

The impacts of tillage practices and crop rotations are fundamental factors influencing changes in the soil carbon, and thus the sustainability of agricultural systems. The objective of this study was to compare soil carbon status and temporal changes in topsoil from different 4 year rotations and tillage treatments (i.e., no-till and conventional tillage). Rotation systems were primarily corn and soy-based and included cereal and alfalfa phases along with red clover cover crops. In 2018, soil samples were collected from a silty-loam topsoil (0–15 cm) from the 36 year long-term experiment site in southern Ontario, Canada. Total carbon (TC) contents of each sample were determined in the laboratory using combustion methods and comparisons were made between treatments using current and archived samples (i.e., 20 year and 9 year change, respectively) for selected crop rotations. Overall, TC concentrations were significantly higher for no-till compared with conventional tillage practices, regardless of the crop rotations employed. With regard to crop rotation, the highest TC concentrations were recorded in corn–corn–oats–barley (CCOB) rotations with red clover cover crop in both cereal phases. TC contents were, in descending order, found in corn–corn–alfalfa–alfalfa (CCAA), corn–corn–soybean–winter wheat (CCSW) with 1 year of seeded red clover, and corn–corn–corn–corn (CCCC). The lowest TC concentrations were observed in the corn–corn–soybean–soybean (CCSS) and corn–corn–oats–barley (CCOB) rotations without use of cover crops, and corn–corn–soybean–winter wheat (CCSW). We found that (i) crop rotation varieties that include two consecutive years of soybean had consistently lower TC concentrations compared with the remaining rotations; (ii) TC for all the investigated plots (no-till and/or tilled) increased over the 9 year and 20 year period; (iii) the no-tilled CCOB rotation with 2 years of cover crop showed the highest increase of TC content over the 20 year change period time; and (iv) interestingly, the no-till continuous corn (CCCC) rotation had higher TC than the soybean–soybean–corn–corn (SSCC) and corn–corn–soybean–winter wheat (CCSW). We concluded that conservation tillage (i.e., no-till) and incorporation of a cover crop into crop rotations had a positive effect in the accumulation of TC topsoil concentrations and could be suitable management practices to promote soil fertility and sustainability in our agricultural soils.


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