Articles | Volume 7, issue 2
https://doi.org/10.5194/soil-7-811-2021
https://doi.org/10.5194/soil-7-811-2021
Original research article
 | 
21 Dec 2021
Original research article |  | 21 Dec 2021

Biochar alters hydraulic conductivity and impacts nutrient leaching in two agricultural soils

Danielle L. Gelardi, Irfan H. Ainuddin, Devin A. Rippner, Janis E. Patiño, Majdi Abou Najm, and Sanjai J. Parikh

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Cited articles

Ahmadvand, M., Soltani, J., Ebrahim, S., Garmdareh, H., and Varavipour, M.: The relationship between the characteristics of Biochar produced at different temperatures and its impact on the uptake of NO3-N, Environ. Heal. Eng. Manag. J., 5, 67–75, https://doi.org/10.15171/EHEM.2018.10, 2018. 
ASTM D 1762-84: Standard Test Method for Chemical Analysis of Wood Charcoal., ASTM Int., 84(Reapproved 2007), 1–2, https://doi.org/10.1520/D1762-84R07.2, 2011. 
Blanco-Canqui, H.: Biochar and Soil Physical Properties, Soil Sci. Soc. Am. J., 81, 687–711, https://doi.org/10.2136/sssaj2017.01.0017, 2017. 
Bu, X., Xue, J., Zhao, C., Wu, Y., and Han, F.: Nutrient Leaching and Retention in Riparian Soils as Influenced by Rice Husk Biochar Addition, Soil Sci., 182, 1, https://doi.org/10.1097/ss.0000000000000217, 2017. 
Chandra, S., Medha, I., and Bhattacharya, J.: Potassium-iron rice straw biochar composite for sorption of nitrate, phosphate, and ammonium ions in soil for timely and controlled release, Sci. Total Environ., 712, 136337, https://doi.org/10.1016/j.scitotenv.2019.136337, 2020. 
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Short summary
Biochar is purported to alter soil water dynamics and reduce nutrient loss when added to soils, though the mechanisms are often unexplored. We studied the ability of seven biochars to alter the soil chemical and physical environment. The flow of ammonium through biochar-amended soil was determined to be controlled through chemical affinity, and nitrate, to a lesser extent, through physical entrapment. These data will assist land managers in choosing biochars for specific agricultural outcomes.