Cited by 37Soil Carbon and Nitrogen DynamicsSoil and Unsaturated FlowSoil and Water Nutrient Dynamics

Nitrogen and Carbon Leaching in Repacked Sandy Soil with Added Fine Particulate Biochar

Bruun, Esben W., Petersen, Carsten, Strobel, Bjarne W., Hauggaard-Nielsen, Henrik·2012·Soil Science Society of America Journal

Abstract

Biochar amendment to soil may affect N turnover and retention, and may cause translocation of dissolved and particulate C. We investigated effects of three fine particulate biochars made of wheat (Triticum aestivum L.) straw (one by slow pyrolysis and two by fast pyrolysis) on N and C leaching from repacked sandy soil columns (length: 51 cm). Biochar (2 wt%), ammonium fertilizer (NH4+, amount corresponding to 300 kg N ha−1) and an inert tracer (bromide) were added to a 3-cm top layer of sandy loam, and the columns were then irrigated with constant rate (36 mm d−1) for 15 d. The total amount of leachate came to about 3.0 water filled pore volumes (WFPVs). Our study revealed a high mobility of labile C components originating from the fine particulate fast pyrolysis biochar. This finding highlights a potential risk of C leaching coupled with the use of fast pyrolysis biochars for soil amendment on sandy soil. By contrast, C components from the slow pyrolysis biochar were fully retained in the topsoil. Contrary to our expectations, there were no overall effects of biochar amendment on the cumulative leaching of mineral N (NH4+ plus NO3–), that is, the biochars did not increase the N retention capacity of the soil. All three biochars caused a slight increase of NH4+ leaching, while NO3– leaching was slightly decreased by addition of the fast pyrolysis biochars.

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Crossref · 10.2136/sssaj2011.0101

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Authors
Bruun, E. W., Petersen, C., Strobel, B. W., & Hauggaard-Nielsen, H.
Affiliations
  • Technical University of Denmark (DK)
  • University of Copenhagen (DK)
  • Dep. of Chemical and, Biochemical Engineering; Technical Univ. of Denmark; 2800 Kgs. Lyngby Denmark
Corresponding author
Bruun, Esben W.
Venue
Soil Science Society of America Journal
Publisher
Wiley
Published
2012-07
Volume
76
Issue
4
Pages
1142-1148
ISSN
0361-5995 (ISSN-L)
OpenAlex
W2085176524
Cited by
37
References
26
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 4 · 2022: 4 · 2021: 3 · 2020: 3 · 2019: 1 · 2018: 1 · 2017: 3 · 2016: 6 · 2015: 1 · 2014: 7 · 2013: 1
FWCI
4.39
Type
journal article
Language
en
Open access
closed
Locations
  • Soil Science Society of America Journal (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
  • Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion)
Funders
  • National Globalization
  • Danmarks Tekniske Universitet
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Engineering › Civil and Structural Engineering › Soil and Unsaturated Flow
  • Physical Sciences › Environmental Science › Environmental Chemistry › Soil and Water Nutrient Dynamics
Keywords
biochar, nitrogen leaching, carbon leaching, sandy soil, wheat straw, slow pyrolysis, fast pyrolysis, ammonium leaching, nitrate leaching, labile carbon, soil amendment, bromide tracer, nitrogen retention

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