Soil greenhouse gas emissions, organic carbon and crop yield following pinewood biochar and biochar–manure applications at eroded and depositional landscape positions: A field trial in South Dakota, USA

Abagandura, Gandura Omar; Bansal, Sangeeta; Karsteter, Audrey; Kumar, Sandeep

doi:10.1111/sum.12760

Cited by 25 publications

(12 citation statements)

References 96 publications

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“…These differences may be because of the difference in soil types; the soil in our research was a Haplic Phaeozem (FAO, 1988), while the soil in the research conducted by Liu, Qi, et al (2017) was a Haplic Kastanozem (FAO, 1988). Abagandura et al (2022) also found that the effects of biochar on GHG emissions changed among soils with different soil textures.…”

Section: Discussionmentioning

confidence: 97%

Effects of biochar addition on greenhouse gas emissions during freeze–thaw cycles in a black soil region, Northeast China

Wang

Liu

et al. 2022

Soil Use and Management

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As global warming intensifies, the soil environment in middle to high latitudes will undergo more extensive and frequent freeze–thaw cycles (FTCs), which will significantly affect the carbon and nitrogen cycles of soil ecosystems and aggravate greenhouse gas (GHG) emissions. Biochar can increase soil organic carbon storage and mitigate climate change. To effectively control GHG emissions, soil supplemented with biochar at different application rates (0%, 2%, 4% and 6% [w/w]) under different numbers of FTCs (0, 3, 6, 9, and 12) was selected as the research object. The soil GHG emission characteristics in different experimental treatments and their relationships with soil physical and chemical properties were determined. Our results showed that N2O and CO2 emissions were promoted during FTCs, with values of 3.13–50.37 and 16.22–135.50 μg m−2 h−1, respectively. The order of N2O and CO2 emissions with respect to biochar application rate was as follows: 2% > 0% > 4% > 6%. CH4 emissions were negative during FTCs, varying from −1.62 to −10.59 μg m−2 h−1, and negative CH4 emissions were promoted by biochar. Correlation analysis showed that N2O, CO2 and CH4 emissions were significantly correlated with pH, soil moisture and soil organic matter (SOM), total nitrogen (TN) and NH4+–N contents (p < .01). The conceptual path model demonstrated that GHG emissions were significantly influenced by FTCs, moisture, SOM and biochar application rate. Our results indicate that the effects of FTCs on GHG emissions were greater than those of biochar application. Biochar application rates of 4% or 6% should be considered in the future to reduce soil GHG emissions in the black soil region of Northeast China. Our results can help provide a theoretical basis and effective strategy to reduce soil GHG emissions during FTCs in seasonally frozen regions.

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Section: Discussionmentioning

confidence: 97%

Effects of biochar addition on greenhouse gas emissions during freeze–thaw cycles in a black soil region, Northeast China

Wang

Liu

et al. 2022

Soil Use and Management

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“…Soil represents the largest terrestrial carbon pool and holds much promise in regulating global climate (Gherardi & Sala, 2020; Hein et al, 2020; Walker et al, 2022). Depending on landscape position and soil texture, soil amendment such as biochar can be used to suppress GHG emission (Abagandura et al, 2022). The use of organic fertilizer can mitigate N 2 O emission in comparison with inorganic fertilizer (Chirinda et al, 2021; Lawrence et al, 2021).…”

Section: Climate Change Adaptation and Climate Mitigationmentioning

confidence: 99%

Sustainable soil management for food security

Hou

2023

Soil Use and Management

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“…Application of organic amendments serves as a promising strategy for risk mitigation of NPs with multiple processes and mechanisms. First of all, organic amendments (e.g., compost, manure and biochar) applied to the soil increase the SOM pool (Abagandura et al, 2022 ; Armolaitis et al, 2022 ; de Figueiredo et al, 2021 ; Dong et al, 2022 ), which may reduce NP mobility via enhanced eco‐corona formation (Figure 6 ). Secondly, these amendments directly immobilize NP via heteroaggregation or adsorption (Abdoul Magid et al, 2021 ; Ayaz et al, 2022 ; Tong et al, 2020 ; L. Wang et al, 2022 ).…”

Section: Implications For Risk Mitigationmentioning

confidence: 99%

Aging of colloidal contaminants and pathogens in the soil environment: Implications for nanoplastic and COVID‐19 risk mitigation

Wang

Yin

et al. 2022

Soil Use and Management

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Colloidal contaminants and pathogens are widely distributed in soil, whose tiny sizes and distinct surface properties render unique environmental behaviours.Because of aging, colloids can undergo dramatic changes in their physicochemical properties once in the soil environment, thus leading to diverse or even unpredictable environmental behaviour and fate. Herein, we provide a state-of-art review of colloid aging mechanisms and characteristics and implications for risk mitigation. First, we review aging-induced formation of colloidal contaminants and aging-associated changes. We place a special focus on emerging nanoplastic (NP) contaminants and associated physical, chemical, and biological aging processes in soil environments. Second, we assess aging and survival features of colloidal pathogens, especially viruses. Viruses in soils may survive from several days to months, or even several years in groundwater, depending on their rates of inactivation and the reversibility of attachment. Furthermore, we identify implications for risk mitigation based on aging mechanisms. Hotspots of (photo)chemical aging of NPs, including plastic gauzes at construction sites and randomly discarded plastic waste in rural areas, are identified as area requiring greater research attention. For COVID-19, we suggest taking greater care in regions where viruses are persist for long periods, such as cold climate regions. Soil amendment with quicklime (CaO) may act as an effective means for pathogen disinfection.Future risk mitigation of colloidal contaminants and pathogens relies on a better understanding of aging mechanisms and more sophisticated models accurately depicting processes in real soil environments.

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Soil greenhouse gas emissions, organic carbon and crop yield following pinewood biochar and biochar–manure applications at eroded and depositional landscape positions: A field trial in South Dakota, USA

Abstract: Soil amendments can help reduce greenhouse gas (GHG) emissions and increase soil organic carbon (SOC) and crop yield. However, most biochar studies have been conducted on single soil type under controlled conditions. To address this

Cited by 25 publications

References 96 publications

Effects of biochar addition on greenhouse gas emissions during freeze–thaw cycles in a black soil region, Northeast China

Effects of biochar addition on greenhouse gas emissions during freeze–thaw cycles in a black soil region, Northeast China

Sustainable soil management for food security

Aging of colloidal contaminants and pathogens in the soil environment: Implications for nanoplastic and COVID‐19 risk mitigation

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