Biochar and Soil Physical Properties

Soil Science Society of America Journal, Journal Year: 2017, Volume and Issue: 81(4), P. 687 - 711

Published: July 1, 2017

Core Ideas Biochar generally improves the soil physical environment Sandy soils appear to respond more biochar than clayey Long-term studies are needed conclusively discern extent of effects is considered be a potential amendment. However, its implications for and hydraulic properties have not been widely discussed. Changes in influence numerous services that provide. This paper (i) reviewed impacts on compaction, mechanical, structural, hydraulic, thermal properties; (ii) discussed factors affecting performance; (iii) identified research areas. reduces bulk density by 3 31%, increases porosity 14 64%, has limited or no penetration resistance. wet aggregate stability 226%, consistency, mixed dry stability. It available water 4 130%. Saturated conductivity decreases coarse-textured soils, fine-textured following application. Studies other few but suggest tensile strength particle density, alters infiltration, moderates properties, minimal effect repellency. soils. effectiveness as amount applied increases. A decrease size can increase retention may reduce saturated flow. Field-scale long-term assessing all under different scenarios management needed. Overall, environment, field lacking ascertain effects.

Language: Английский

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Biochar application to low fertility soils: A review of current status, and future prospects

Geoderma, Journal Year: 2018, Volume and Issue: 337, P. 536 - 554

Published: Oct. 11, 2018

Language: Английский

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The role of biochar and biochar-compost in improving soil quality and crop performance: A review

Applied Soil Ecology, Journal Year: 2017, Volume and Issue: 119, P. 156 - 170

Published: June 30, 2017

Language: Английский

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Biochar as an Electron Shuttle between Bacteria and Fe(III) Minerals

Environmental Science & Technology Letters, Journal Year: 2014, Volume and Issue: 1(8), P. 339 - 344

Published: July 29, 2014

Biochar influences soil fertility, N2O emissions, and atmospheric CO2 budgets, because of its quinone aromatic structures, it is redox-active. Here we demonstrate that biochar concentrations 5 10 g L–1 stimulate both the rate extent microbial reduction Fe(III) oxyhydroxide mineral ferrihydrite (15 mM) by Shewanella oneidensis MR-1, while lower (0.5 1 L–1) have a negative effect on reduction. Control experiments showed particles not biochar-derived water-soluble organic compounds are responsible for stimulating inhibiting effect. We also found changed product from magnetite (Fe3O4) to siderite (FeCO3). Our study suggests can influence biogeochemistry only indirectly changing structure chemistry but directly mediating electron transfer processes, i.e., functioning as an shuttle.

Language: Английский

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Quantification of biochar effects on soil hydrological properties using meta-analysis of literature data

Geoderma, Journal Year: 2016, Volume and Issue: 274, P. 28 - 34

Published: April 12, 2016

Language: Английский

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Does biochar improve soil water retention? A systematic review and meta-analysis

Geoderma, Journal Year: 2019, Volume and Issue: 361, P. 114055 - 114055

Published: Nov. 27, 2019

Language: Английский

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Long-term effects of biochar on soil physical properties

Geoderma, Journal Year: 2016, Volume and Issue: 282, P. 96 - 102

Published: July 22, 2016

Language: Английский

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Biochar alleviates combined stress of ammonium and acids by firstly enriching Methanosaeta and then Methanosarcina

Water Research, Journal Year: 2015, Volume and Issue: 90, P. 34 - 43

Published: Dec. 19, 2015

Language: Английский

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Biochar particle size, shape, and porosity act together to influence soil water properties

PLoS ONE, Journal Year: 2017, Volume and Issue: 12(6), P. e0179079 - e0179079

Published: June 9, 2017

Many studies report that, under some circumstances, amending soil with biochar can improve field capacity and plant-available water. However, little is known about the mechanisms that control these improvements, making it challenging to predict when will water properties. To develop a conceptual model explaining biochar's effects on hydrologic processes, we conducted series of well constrained laboratory experiments using sand matrix test particle size porosity retention curves. We showed affects storage through changing pore space between particles (interpores) by adding pores are part (intrapores). used experimental results better understand how intrapores shape observed changes in capillary pressure main component potential. propose increase content biochar-sand mixtures soils drier. When wetter, particles' elongated disrupts packing grains sandy matrix, increasing volume available for storage. These imply biochars high intraporosity irregular shapes most effectively coarse soils.

Language: Английский

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Effect of biochar application on soil hydrological properties and physical quality of sandy soil

Geoderma, Journal Year: 2016, Volume and Issue: 281, P. 11 - 20

Published: July 2, 2016

Language: Английский

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