Impacts of the components of conservation agriculture on soil organic carbon and total nitrogen storage: A global meta-analysis

Bohoussou, Yves N’Dri; Kou, Yi-Hong; Yu, Wei-Bao; Lin, Bai-Jian; Virk, Ahmad Latif; Zhao, Xin; Dang, Yash P.; Zhang, Hailin

doi:10.1016/j.scitotenv.2022.156822

Cited by 45 publications

(11 citation statements)

References 85 publications

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“…However, adoption of conservation tillage practices in Scandinavia is still at a very low level (Carter, 2017). Reduced soil tillage in general could help mitigate loss of soil organic carbon (Bohoussou et al, 2022; Krauss et al, 2022) and soil erosion (Montgomery, 2007). It would also lower soil tillage costs and fuel inputs (Uri, 2000).…”

Section: Discussionmentioning

confidence: 99%

Minimal soil disturbance combined with spring cropping can halt soil seedbank accumulation of Alopecurus myosuroides

Menegat

2023

Weed Research

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The basic mechanism of soil inversion tillage for control of annual weeds is based on the vertical translocation of weed seeds from the soil surface to deeper soil layers.Buried weed seeds either remain dormant in the soil seedbank and are exposed to biological and chemical decay mechanisms, or they germinate but the seedlings cannot reach the soil surface (fatal germination). However, depending on the seed biology of the respective target species, frequent inversion tillage can lead to a build-up

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Section: Discussionmentioning

confidence: 99%

Minimal soil disturbance combined with spring cropping can halt soil seedbank accumulation of Alopecurus myosuroides

Menegat

2023

Weed Research

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“…For studies where data on BD were not provided, it was estimated by using the equation proposed by Song et al (2005). In some articles, the formula has been well applied to estimate the BD in cropland BMPs (Berhane et al, 2020; Bohoussou et al, 2022). The formula is as follows Equation (2):

BD goodbreak= 1.377 e^{- 0.0048 C}

where C is SOC content (g kg −1 ), and BD is soil bulk density (g cm −3 ).…”

Section: Methodsmentioning

confidence: 99%

Management‐induced changes in soil organic carbon and related crop yield dynamics in China's cropland

Lin

Liu

et al. 2023

Global Change Biology

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Enhancing soil organic carbon (SOC) sequestration and food supply are vital for human survival when facing climate change. Site‐specific best management practices (BMPs) are being promoted for adoption globally as solutions. However, how SOC and crop yield are related to each other in responding to BMPs remains unknown. Here, path analysis based on meta‐analysis and machine learning was conducted to identify the effects and potential mechanisms of how the relationship between SOC and crop yield responds to site‐specific BMPs in China. The results showed that BMPs could significantly enhance SOC and maintain or increase crop yield. The maximum benefits in SOC (30.6%) and crop yield (79.8%) occurred in mineral fertilizer combined with organic inputs (MOF). Specifically, the optimal SOC and crop yield would be achieved when the areas were arid, soil pH was ≥7.3, initial SOC content was ≤10 g kg−1, duration was >10 years, and the nitrogen (N) input level was 100–200 kg ha−1. Further analysis revealed that the original SOC level and crop yield change showed an inverted V‐shaped structure. The association between the changes in SOC and crop yield might be linked to the positive role of the nutrient‐mediated effect. The results generally suggested that improving the SOC can strongly support better crop performance. Limitations in increasing crop yield still exist due to low original SOC level, and in regions where the excessive N inputs, inappropriate tillage or organic input is inadequate and could be diminished by optimizing BMPs in harmony with site‐specific conditions.

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“…Meta‐analysis was performed to examine the influence of fertilizer use on SOC and TN. The effect size of the different fertilizations was calculated through a natural logarithm of the response ratio

(R = X_{normalt} / X_{normalc})

(Bohoussou et al, 2022; Hedges et al, 1999):

\ln R = \ln (\frac{X_{normalt}}{X_{normalc}})

where X t and X c are SOC and TN mean values for the treatment (t) and control group (c).…”

Section: Methodsmentioning

confidence: 99%

“…The classification of the various groups and subgroups is shown in Table 1. calculated through a natural logarithm of the response ratio Bohoussou et al, 2022;Hedges et al, 1999):…”

Section: Data Categorizationmentioning

confidence: 99%

Effects of fertilizer application strategies on soil organic carbon and total nitrogen storage under different agronomic practices: A meta‐analysis

Bohoussou,

Han,

et al. 2023

Land Degrad Dev

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Fertilizer application strategies can impact soil health, mainly soil organic carbon (SOC) and total nitrogen (TN) sequestration, which are essential in mitigating climate change. Many studies have been conducted on the influence of fertilizer use on SOC and TN storage. Results can, however, be variable in different sites because of various management practices and environmental conditions; therefore, we conducted a global meta‐analysis of 953 observations from 143 papers on the impact of different fertilizers (mineral N (NF), manure (Mn) and mixed fertilizers (MNF: combination of mineral and organic fertilizer)) on SOC and TN storage under various cropping systems and environmental conditions in agricultural land. The results showed that MNF led to the greatest SOC and TN stocks. Noticeably, animal Mn sequestered higher amounts of SOC and TN compared to green Mn. In addition, MNF increases SOC in the medium term (10–20 years, 43.71%) and TN in the short term (0–10 years, 40.85%), which could be related to their nutrient's cycles and residence time in the soil. The higher effectiveness of SOC and TN sequestration (12.84% and 27.42%, respectively) under NF was observed at high rates >250 kg N/ha in comparison to low rates of 0–250 kg N/ha. A significant SOC increment was observed with MNF (37.76%) and Mn (19.45%) under continuous cropping (monoculture) than crop rotations. In contrast, TN was higher with MNF (58.31%) and Mn (18.23%) with crop rotations. The subhumid and semi‐arid zones had greater increase in SOC (28.24%) and TN (74.54%) stock in comparison to other climatic conditions. Overall, this study emphasized that MNF could optimize SOC and TN storage in agricultural soils depending upon edaphic and regional climatic conditions.

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Impacts of the components of conservation agriculture on soil organic carbon and total nitrogen storage: A global meta-analysis

Cited by 45 publications

References 85 publications

Minimal soil disturbance combined with spring cropping can halt soil seedbank accumulation of Alopecurus myosuroides

Minimal soil disturbance combined with spring cropping can halt soil seedbank accumulation of Alopecurus myosuroides

Management‐induced changes in soil organic carbon and related crop yield dynamics in China's cropland

Effects of fertilizer application strategies on soil organic carbon and total nitrogen storage under different agronomic practices: A meta‐analysis

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