Biochar, Tool for Climate Change Mitigation and Soil Management

Shackley, Simon; Sohi, Saran; Ibarrola, Rodrigo; Hammond, Jim; Mašek, Ondřej; Brownsort, Peter; Cross, Andrew; Prendergast-Miller, Miranda T.; Haszeldine, R. Stuart

doi:10.1007/978-1-4614-5770-1_6

Cited by 16 publications

(12 citation statements)

References 119 publications

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“…Table 1 shows that the biochar CHB and BSS feedstock have a high pH value, which probably led to their increase in soil. The increase in pH is consistent with other studies found in the literature (SHACKLEY et al, 2012;UZOMA et al, 2011). The modification of pH in the soil is dependent on the raw material that the biochar was made, for this reason it is noted that each biochar and combinations presented different values.…”

Section: Biochar Combinations On Soil Chemical Propertiessupporting

confidence: 91%

Biochar and its impact on soil properties, growth and yield of okra plants

et al. 2020

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Applying biochar to the soil can mitigate problems that hinder agricultural production, such as water scarcity and low fertility soils. The objective of this research was to evaluate the impact of dry coconut husk biochar and sewage sludge combinations on soil chemical characteristics, growth, yield and water productivity of okra crop. The experiment was arranged in randomized blocks, with 6 treatments (CHB+BSS -coconut husk biochar + biochar of sewage sludge, CHB+RSS-coconut husk biochar + raw sewage sludge, BSS+RSS -biochar of sewage sludge + raw sewage sludge, CHB -coconut husk biochar, BSS -biochar of sewage sludge, WB -without biochar (control)). Plant height, number of fruits per plant, yield and water use productivity were evaluated. To evaluate the effect of biochar on soil, soil samples weretaken to determine pH, CEC, P, K, Ca, Mg concentrations after incorporation of biochar into the soil. The BSS + RSS and BSS treatments provided better results on okra production and growth characteristics with a 421.15% and 419% productivity increase, respectively, compared to the control treatment. The BSS and BSS + RSS treatments provided better water productivity,with values of 14.5 and 13.3kilogramproduced for each cubic meter of water applied, respectively.All soil chemical characteristics analyzed were modified when the biochar was incorporated into the soil. The results provide valuable insight that okra growers can embrace the use of the combination BSS+RSS and BSS, providing better yields and lower water use in growing this plant.

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Section: Biochar Combinations On Soil Chemical Propertiessupporting

confidence: 91%

Biochar and its impact on soil properties, growth and yield of okra plants

et al. 2020

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“…This results in a mean yield increase of 7.1% compared to a plantation without biochar application, giving a final biomass yield of 14.5 t·ha –1 (dry basis). Reduced nitrate leaching and N 2 O emissions are accounted for by assuming that the share of N provided by the biochar does not cause N 2 O emissions or nitrate leaching, whereas the mineral fertilizer emissions are unchanged . The amount of mineral fertilizer is constant in all cases, and the yield increases are thus attributed exclusively to the biochar application.…”

Section: Methodsmentioning

confidence: 99%

“…Apart from promoting renewable energy and reducing overall energy consumption, the permanent sequestration of carbon dioxide from the atmosphere is one of the options to achieve this goal. Besides storing CO 2 directly underground (e.g., in depleted oil or gas wells), biochar is often proposed as an option for permanent carbon storage in the soil. − Biochar is the carbonaceous solid product (char) obtained from the slow pyrolysis of biomass and applied to the soil. The effects of biochar on soil properties are numerous, but yet little understood. , Apart from possible yield increases due to increased soil carbon content, biochar is considered of interest due to its high stability in the soil and the corresponding ability to create long-term carbon sinks.…”

Section: Introductionmentioning

confidence: 99%

Biomass Pyrolysis for Biochar or Energy Applications? A Life Cycle Assessment

Peters

Iribarren

Dufour

2015

Environ. Sci. Technol.

184

111

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The application of biochar as a soil amendment is a potential strategy for carbon sequestration. In this paper, a slow pyrolysis system for generating heat and biochar from lignocellulosic energy crops is simulated and its life-cycle performance compared with that of direct biomass combustion. The use of the char as biochar is also contrasted with alternative use options: cofiring in coal power plants, use as charcoal, and use as a fuel for heat generation. Additionally, the influence on the results of the long-term stability of the biochar in the soil, as well as of biochar effects on biomass yield, is evaluated. Negative greenhouse gas emissions are obtained for the biochar system, indicating a significant carbon abatement potential. However, this is achieved at the expense of lower energy efficiency and higher impacts in the other assessed categories when compared to direct biomass combustion. When comparing the different use options of the pyrolysis char, the most favorable result is obtained for char cofiring substituting fossil coal, even assuming high long-term stability of the char. Nevertheless, a high sensitivity to biomass yield increase is found for biochar systems. In this sense, biochar application to low-quality soils where high yield increases are expected would show a more favorable performance in terms of global warming.

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“…For information on analysis and additional properties for SBC see Shackley et al. (), Mašek et al. (), and Bornø et al.…”

Section: Methodsmentioning

confidence: 99%

Biochar properties and soil type drive the uptake of macro‐ and micronutrients in maize (Zea mays L.)

Bornø

Müller-Stöver

Liu

2019

J. Plant Nutr. Soil Sci.

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The use of biochar in agriculture is a promising management tool to mitigate soil degradation and anthropogenic climate change. However, biochar effects on soil nutrient bioavailability are complex and several concurrent processes affecting nutrient bioavailability can occur in biochar‐amended soils. In a short‐term pot experiment, the concentration of N, P, K, S, Ca, Mg, Cu, Zn, Mn, B, Fe, and Na in the shoots of maize grown in three different soil types [sandy soil (S1), sandy loam (S2), and sandy clay loam (S3)] was investigated. The soils were either unamended or amended with two different biochars [wheat straw biochar (SBC) or pine wood biochar (WBC)] at two P fertilizer regimes (–/+ P). We used three‐way ANOVA and Principal Component Analyses (PCA) of transformed ionomic data to identify the effects of biochar, soil, and P fertilizer on the shoot nutrient concentrations. Three distinct effects of biochar on the shoot ionome were detected: (1) both biochars added excess K to all three soils causing an antagonistic effect on the uptake of Ca and Mg in maize shoots. (2) Mn uptake was affected by biochar with varying effects depending on the combined effect of biochar and soil properties. (3) WBC increased maize uptake of B, despite the fact that WBC increased soil pH and added additional calcite to the soil, which would be expected to reduce B bioavailability. The results of this study highlight the fact that the bioavailability of several macro and micronutrients is affected by biochar application to soil and that these effects depend on the combined effect of biochar and soils with different properties.

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Biochar, Tool for Climate Change Mitigation and Soil Management

Cited by 16 publications

References 119 publications

Biochar and its impact on soil properties, growth and yield of okra plants

Biochar and its impact on soil properties, growth and yield of okra plants

Biomass Pyrolysis for Biochar or Energy Applications? A Life Cycle Assessment

Biochar properties and soil type drive the uptake of macro‐ and micronutrients in maize (Zea mays L.)

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