Biochar effects on soil water infiltration and erosion under seal formation conditions: rainfall simulation experiment

Abrol, Vinayak; Ben‐Hur, M.; Verheijen, Frank; Keizer, Jan Jacob; Martins, Martinho A. S.; Tenaw, Haim; Tchehansky, Ludmilla; Graber, Ellen R.

doi:10.1007/s11368-016-1448-8

Cited by 115 publications

(70 citation statements)

References 61 publications

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“…According to two studies (Fig. 1; Abrol et al, 2016; Jien and Wang, 2013), soil loss decreased following an exponential function with an increase in biochar amount on a loamy sand and silty clay, suggesting that biochar addition could reduce soil loss in different soil textural classes. Data are too few to fully understand how biochar effectiveness at reducing soil loss changes as the rate of biochar application increases.…”

Section: Impacts Of Biochar Application On Water Erosionmentioning

confidence: 98%

“…The increased roughness at the soil surface after biochar addition can promote runoff ponding and delay runoff. On a calcareous loam, Abrol et al (2016) observed that coarse wood biochar particles accumulated on the soil surface and created roughness, increasing time for runoff infiltration and reducing soil loss. They also observed that fine soil particles in runoff accumulated on the soil surface upslope of biochar particle clusters.…”

Section: Biochar and Soil Erodibilitymentioning

confidence: 99%

“…Differences in particle‐size distribution between biochar and soil can affect nitrate adsorption and leaching. Mixing biochar and soil with similar particle size may have smaller effects on nitrate adsorption compared with mixing fine biochar particles with large soil particles (Abrol et al, 2016). Specifically, addition of fine biochar particles to sandy soils, which consist of large primary particles, can clog the pores and change pore‐size distribution, thereby reducing rapid movement of water and nitrates within the soil.…”

Section: Biochar Amendment and Nutrient Leaching From Soilmentioning

confidence: 99%

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Biochar and Water Quality

Blanco‐Canqui¹

2019

J of Env Quality

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Biochar application is considered to be an emerging strategy to improve soil ecosystem services. However, implications of such application on water quality parameters have not been widely discussed. This paper synthesizes the state‐of‐the‐art research on biochar effects on water erosion, nitrate leaching, and other sources of water pollution. Literature indicates that in general, biochar application reduces runoff by 5 to 50% and soil loss by 11 to 78%, suggesting that it can be effective at reducing water erosion, but the magnitude of erosion reduction is highly variable. Co‐application of biochar with other organic amendments (i.e., animal manure, compost) appears to be more effective at reducing water erosion than biochar alone. A main mechanism by which biochar can reduce water erosion is by improving soil properties (i.e., organic C, hydraulic conductivity, aggregate stability), which affect soil erodibility. This review also indicates that biochar reduces nitrate leaching, in most cases by 2 to 88%, but has mixed effect on phosphate and dissolved C leaching. Additionally, biochar effectively filters urban runoff, adsorbs pollutants, and reduces pesticides losses. Biochar feedstock, pyrolysis temperature, application amount, time after application, and co‐application with other amendments affect biochar impacts on water quality. Biochar erosion and potential reduction in nutrient and pesticide use efficiency due to the strong adsorption are concerns that deserve consideration. Overall, biochar application has the potential to reduce water erosion, nitrate leaching, pesticide losses, and other pollutant losses, but more field‐scale data are needed to better discern the extent to which biochar can improve water quality. Core Ideas Biochar can reduce water erosion, but the magnitude of reduction is variable. Biochar combined with other organic amendments can reduce water erosion more than biochar alone. Biochar can reduce nitrate leaching but has mixed effects on phosphate and dissolved C leaching. Biochar filters urban runoff, adsorbs organic pollutants, and reduces pesticide losses. More field data on the effectiveness of biochar for improving water quality are needed.

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Section: Impacts Of Biochar Application On Water Erosionmentioning

confidence: 98%

Section: Biochar and Soil Erodibilitymentioning

confidence: 99%

Section: Biochar Amendment and Nutrient Leaching From Soilmentioning

confidence: 99%

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Biochar and Water Quality

Blanco‐Canqui¹

2019

J of Env Quality

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“…Several studies showed enhanced soil water holding capacity (Asai et al, 2009, Karhu et al, 2011, improved soil water permeability (Asai et al, 2009), improved saturated hydraulic conductivity, reduced soil strength, modification in soil bulk density , modified aggregate stability (Busscher et al, 2010, Peng et al, 2011. Soil amendment with biochar can result in decreased bulk density and soil penetration resistance and increased water holding capacity (Abrol et al, 2016). Most research findings point to the improvement of bulk density with biochar application (Karhu et al, 2011).…”

Section: Soil Physical Propertiesmentioning

confidence: 99%

Biochar A Source of C Sink and Soil Health-A Review

Sharma¹,

Abrol²,

Sharma³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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“…Biochar is more recalcitrant than the original material: carbon from biochar is estimated to persist in soils for hundreds of years, while non-pyrolysed biomass carbon turns over in the range of decades (Gurwick et al 2013;Wang et al 2015). Together with carbon sequestration, biochar is intended to improve soil properties, such as water and nutrient retention as well as improved soil structure and drainage (Glaser et al 2002;Jeffery et al 2011;Abrol et al 2016). Current biochar research is fragmented, unnecessarily repeated, and new scientific evidence is often not connected or implemented due to the lack of interaction and knowledge exchange.…”

Section: Introductionmentioning

confidence: 99%

Representativeness of European Biochar Research: Part I – Field Experiments

Verheijen

Mankasingh

Penížek

et al. 2017

Journal of Environmental Engineering and Landscape Management

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Abstract. Trinitrotoluene (TNT), a commonly used explosive for military and industrial applications, can cause serious environmental pollution. 28-day laboratory pot experiment was carried out applying bioaugmentation using laboratory selected bacterial strains as inoculum, biostimulation with molasses and cabbage leaf extract, and phytoremediation using rye and blue fenugreek to study the effect of these treatments on TNT removal and changes in soil microbial community responsible for contaminant degradation. Chemical analyses revealed significant decreases in TNT concentrations, including reduction of some of the TNT to its amino derivates during the 28-day tests. The combination of bioaugmentation-biostimulation approach coupled with rye cultivation had the most profound effect on TNT degradation. Although plants enhanced the total microbial community abundance, blue fenugreek cultivation did not significantly affect the TNT degradation rate. The results from molecular analyses suggested the survival and elevation of the introduced bacterial strains throughout the experiment. Keywords: TNT, bioaugmentation, biostimulation, phytoremediation, microbial community.

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Biochar effects on soil water infiltration and erosion under seal formation conditions: rainfall simulation experiment

Cited by 115 publications

References 61 publications

Biochar and Water Quality

Biochar and Water Quality

Biochar A Source of C Sink and Soil Health-A Review

Representativeness of European Biochar Research: Part I – Field Experiments

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