Evaluating soil organic carbon stock changes induced by no-tillage based on fixed depth and equivalent soil mass approaches

Xiao, Liangang; Zhou, Senqiu; Zhao, Rongqin; Greenwood, Philip; Kuhn, Nikolaus J.

doi:10.1016/j.agee.2020.106982

Cited by 35 publications

(24 citation statements)

References 43 publications

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“…It is important to note that an evaluation of the C and N stock of 0-1.00 m resulted in similar values between NT and CT (Table 4). As observed in the global meta-analysis of Xiao et al (2020), these results illustrate that using the overall SOC stock change of the whole sampling soil profile deeper than 0.30 m masks the beneficial change in SOC stock in the 0-0.05 m soil over long-term adoption of NT.…”

Section: Discussionsupporting

confidence: 68%

“…The C accumulation in superficial soil layers under NT has been well documented in other studies in Brazil (Bayer et al, 2004;Fageria et al, 2005;Calegari et al, 2008;Nascente et al, 2013;Carvalho et al, 2014) and worldwide (Xiao et al, 2020). This is due to high inputs of crop residues with a permanent cover of the soil surface.…”

Section: Discussionmentioning

confidence: 54%

“…The key role of soils on the carbon (C) budget has been recognized and demonstrated by numerous studies (Li et al, 2020;Xiao et al, 2020). The intensification of agriculture, with land-use change from natural ecosystems (forests, grasslands, meadows) to cultivated areas induced large depletion of soil organic matter (SOM) content due to excessive tillage, that decreased aggregate stability and enhanced soil erosion from plowed soils, and favored organic matter decomposition (Paustian et al, 2016;Lal, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…It is well known that the literature on the effect of soil management and cover crops on the accumulation of C and N in the soil is abundant. However, there is still a consensus that it is extremely important to carry out studies of this nature especially investigating the effects of long-term monitoring (longer than 10-20 years - Poeplau and Don, 2015;Du et al, 2017;Jian et al, 2020), and in deeper layers (deeper than 0.20-0.30 m - Li et al, 2020;Xiao et al, 2020) than those usually used to assess the accumulation of C and N in the soil. Therefore, the present study was carried out aiming to evaluate the long-term (26-years) effect of soil management systems associated with different winter cover crops to accumulate C and N in a very clayey (72 % clay) soil up to 1.00 m deep.…”

Section: Introductionmentioning

confidence: 99%

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Effect of 26-years of soil tillage systems and winter cover crops on C and N stocks in a Southern Brazilian Oxisol

Tiecher¹,

Gubiani²,

Santanna³

et al. 2020

Revista Brasileira De Ciência Do Solo

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Soil management and crop rotation are key factors in controlling the accumulation of C and N in the soil profile, but their long-term effect remains poorly understood for deep soil layers, especially in subtropical conditions. Using a long-term experiment (26-years), this study aimed to evaluate the effect of different soil management systems associated with different winter cover crops on C and N accumulation in a very clayey (72 % clay) soil up to 1 m deep. Two tillage systems [conventional tillage (CT) and no-tillage (NT)] were cultivated with eight winter cover crops (black oat, rye, common vetch, hairy vetch, oilseed radish, wheat, blue lupine, and fallow) in a subtropical Oxisol from Southern Brazil. Soil samples were taken in eight soil layers up to 1.00 m soil depth after 26 years of experiment and, also from an adjacent native forest. After forest clearing, the C stock in the 0.00-0.20 m soil layer was reduced by 45 % in only 10 years (from 1976 to 1986) of soil tillage. Twenty-six years after the beginning of the experiment, C and N stock in 0.00-0.20 m soil layer were 13 and 20 % higher in NT compared to CT, with the greatest differences in C and N content observed in the 0.00-0.05 m layer. When associated with winter cover crops, NT accumulated 0.6 and 0.06 Mg ha-1 yr-1 more C and N than CT with winter fallow in the 0.00-0.20 m soil layer. No-tillage and CT recovered 95 and 83 %, respectively, of the C stock found in the 0.00-0.20 m layer from the native forest. However, in the 0.00-1.00 m soil layer, the positive effect of NT on soil C accumulation compared to CT was diluted, and no clear effect of NT was verified. Moreover, no difference in winter cover crops on soil C and N stocks were observed in all soil layers, possibly due to their similar residues input (3.3-4.9 Mg ha-1 yr-1). No-tillage associated with high biomass input through winter cover crops promoted a faster recovery of soil C and N stock than in CT and, therefore, is an efficient tool to improve soil C and N accumulation even in Oxisols with high clay content.

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Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of 26-years of soil tillage systems and winter cover crops on C and N stocks in a Southern Brazilian Oxisol

Tiecher¹,

Gubiani²,

Santanna³

et al. 2020

Revista Brasileira De Ciência Do Solo

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“…In addition, the number of long-term experiments (>5 yr) in Europe is very limited (Soane et al, 2012). In fact, Xiao et al (2020) evaluated the influence of tillage on SOC in a meta-analysis using 86 studies across the world, but only one was from Europe.…”

mentioning

confidence: 99%

Long‐term effect of tillage and straw retention in conservation agriculture systems on soil carbon storage

Gómez‐Muñoz

Jensen

Munkholm

et al. 2021

Soil Science Soc of Amer J

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The main principles of conservationagriculture (CA) are minimal soil disturbance, permanent soil cover, diversification of crop rotations, and retention of crop residues. Tillage has been implicated with increased soil organic C (SOC) mineralization, but recently this has been contested. Residue retention and cover crops result in higher soil C inputs and are therefore expected to increase SOC. This study aimed to evaluate the effect of 17 yr of residue retention (with and without) and tillage (plowing and no-till) on soil C storage on two Danish sandy loam soils with different clay and SOC content under cool temperate humid climate conditions. Straw retention reduced bulk density at both sites. It also increased the C concentration with 0.47 mg C g -1 dry soil on average from 2002 to 2019, and SOC stocks in 2019 with 23 tonnes C ha -1 , on average, at the site with higher initial SOC content. The effect of straw retention on soil C was higher when the soil was plowed, and no significant effect was observed in no-till soils. Straw retention did not significantly affect C concentration at the site with low initial SOC. Tillage altered the C distribution in the soil profile, so that the C concentration in the upper layer (0-25 cm) was higher in the no-till soils, but did not significantly increase total C concentration in deeper layers (0-50 cm). Use of no-till and straw retention did not consistently affect crop yield across site-years, but the interannual variability was large, obscuring possible differences in yields.

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Soil Carbon Pools Under Different Farming Practices

Kumar

Arora

Louhar

et al. 2022

Agriculture, Livestock Production and Aquaculture

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Evaluating soil organic carbon stock changes induced by no-tillage based on fixed depth and equivalent soil mass approaches

Cited by 35 publications

References 43 publications

Effect of 26-years of soil tillage systems and winter cover crops on C and N stocks in a Southern Brazilian Oxisol

Effect of 26-years of soil tillage systems and winter cover crops on C and N stocks in a Southern Brazilian Oxisol

Long‐term effect of tillage and straw retention in conservation agriculture systems on soil carbon storage

Soil Carbon Pools Under Different Farming Practices

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