Long-Term No-Tillage Sequesters Soil Organic Carbon in Cool Semiarid Regions

Soil Horizons ◽  
2015 ◽  
Vol 56 (6) ◽  
pp. 0 ◽  
Author(s):  
Patrick M. Carr ◽  
Eric C. Brevik ◽  
Richard D. Horsley ◽  
Glenn B. Martin
Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 650
Author(s):  
Jesús Aguilera-Huertas ◽  
Beatriz Lozano-García ◽  
Manuel González-Rosado ◽  
Luis Parras-Alcántara

The short- and medium—long-term effects of management and hillside position on soil organic carbon (SOC) changes were studied in a centenary Mediterranean rainfed olive grove. One way to measure these changes is to analyze the soil quality, as it assesses soil degradation degree and attempts to identify management practices for sustainable soil use. In this context, the SOC stratification index (SR-COS) is one of the best indicators of soil quality to assess the degradation degree from SOC content without analyzing other soil properties. The SR-SOC was calculated in soil profiles (horizon-by-horizon) to identify the best soil management practices for sustainable use. The following time periods and soil management combinations were tested: (i) in the medium‒long-term (17 years) from conventional tillage (CT) to no-tillage (NT), (ii) in the short-term (2 years) from CT to no-tillage with cover crops (NT-CC), and (iii) the effect in the short-term (from CT to NT-CC) of different topographic positions along a hillside. The results indicate that the SR-SOC increased with depth for all management practices. The SR-SOC ranged from 1.21 to 1.73 in CT0, from 1.48 to 3.01 in CT1, from 1.15 to 2.48 in CT2, from 1.22 to 2.39 in NT-CC and from 0.98 to 4.16 in NT; therefore, the soil quality from the SR-SOC index was not directly linked to the increase or loss of SOC along the soil profile. This demonstrates the time-variability of SR-SOC and that NT improves soil quality in the long-term.


2008 ◽  
Vol 100 (6) ◽  
pp. 1787-1787 ◽  
Author(s):  
Ademir Calegari ◽  
W. L. Hargrove ◽  
Danilo Dos Santos Rheinheimer ◽  
Ricardo Ralisch ◽  
Daniel Tessier ◽  
...  

Geoderma ◽  
2014 ◽  
Vol 213 ◽  
pp. 379-384 ◽  
Author(s):  
Enke Liu ◽  
Saba Ghirmai Teclemariam ◽  
Changrong Yan ◽  
Jianmin Yu ◽  
Runsheng Gu ◽  
...  

2012 ◽  
Vol 40 ◽  
pp. 18-27 ◽  
Author(s):  
Giacomo De Sanctis ◽  
Pier Paolo Roggero ◽  
Giovanna Seddaiu ◽  
Roberto Orsini ◽  
Cheryl H. Porter ◽  
...  

2008 ◽  
Vol 100 (4) ◽  
pp. 1013-1019 ◽  
Author(s):  
Ademir Calegari ◽  
W. L. Hargrove ◽  
Danilo Dos Santos Rheinheimer ◽  
Ricardo Ralisch ◽  
Daniel Tessier ◽  
...  

2012 ◽  
Vol 442 ◽  
pp. 40-44
Author(s):  
En Ci ◽  
Jie Zhu ◽  
Juan Peng ◽  
Zhuo Wang Fu

A long-term filed experiment was conducted to investigate the influence of ridge-cultivation and no tillage on distribution of soil organic carbon (SOC) in soil profiles of paddy fields located in Southwest China, and determine SOC accumulation characteristics in paddy soil profiles under long-term ridge-cultivation and no tillage. The experiment included four cultivation treatments: conventional tillage with rotation of rice and winter fallow (CT1), conventional tillage with rotation of rice and rape (CT2),ridge-cultivation and no tillage with rotation of rice and winter fallow (NT1), ridge-cultivation and no tillage with rotation of rice and rape (NT2). After the field experiment were conducted for 20 years, the highest and lowest SOC concentrations in different soil layers (0-10 cm, 10-20 cm, 20-40 cm and 40-60 cm) were found in treatments NT2 and CT2, respectively. SOC concentrations in the 0-10 cm and 40-60cm layers had no significantly difference among treatments NT1, NT2 and CT1, and SOC concentration in the 20-40 cm layer was significantly higher in treatment NT2 compared to other treatments (P NT1 > CT1 > CT2, and there was significantly difference among all the treatments (P<0.05). In conclusion, compared to other treatments, treatment NT2 result in more organic carbon accumulated in the 20-40 cm layer, and is a more effective option for SOC sequestration in paddy field.


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