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. 2020 Feb 12;10:2424. doi: 10.1038/s41598-020-59437-x

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Biogenic ASi increases water holding capacity and soil hydraulic conductivity of soils. Soil water potential as a function of the volumetric water content of sand mixed with different contents of bASi (a) and of a sandy clay loam (SCL) mixed with different contents of bASi (b). Soil hydraulic conductivity as a function of matric potential of sand mixed with different contents of bASi (c) and of a sandy clay loam (SCL) mixed with different contents of bASi (d), The dots are the measured retention curves and the lines (a,b) are the estimated retention curves based on retention curve of soil without ASi and retention curve of pure bASi.