Cited by 872Soil Carbon and Nitrogen DynamicsAgricultural Science and FertilizationThermochemical Biomass Conversion Processes

Corn growth and nitrogen nutrition after additions of biochars with varying properties to a temperate soil

Rajkovich, Shelby, Enders, Akio, Hanley, Kelly, Hyland, Charles, Zimmerman, Andrew R., Lehmann, Johannes·2012·Biology and Fertility of Soils

Abstract

The effects of biochar properties on crop growth are little understood. Therefore, biochar was produced from eight feedstocks and pyrolyzed at four temperatures (300°C, 400°C, 500°C, 600°C) using slow pyrolysis. Corn was grown for 46 days in a greenhouse pot trial on a temperate and moderately fertile Alfisol amended with the biochar at application rates of 0.0%, 0.2%, 0.5%, 2.0%, and 7.0% (w/w) (equivalent to 0.0, 2.6, 6.5, 26, and 91 t biochar ha−1) and full recommended fertilization. Animal manure biochars increased biomass by up to 43% and corn stover biochar by up to 30%, while food waste biochar decreased biomass by up to 92% in relation to similarly fertilized controls (all P < 0.05). Increasing the pyrolysis temperature from 300°C to 600°C decreased the negative effect of food waste as well as paper sludge biochars. On average, plant growth was the highest with additions of biochar produced at a pyrolysis temperature of 500°C (P < 0.05), but feedstock type caused eight times more variation in growth than pyrolysis temperature. Biochar application rates above 2.0% (w/w) (equivalent to 26 t ha−1) did generally not improve corn growth and rather decreased growth when biochars produced from dairy manure, paper sludge, or food waste were applied. Crop N uptake was 15% greater than the fully fertilized control (P < 0.05, average at 300°C) at a biochar application rate of 0.2% but decreased with greater application to 16% below the N uptake of the control at an application rate of 7%. Volatile matter or ash content in biochar did not correlate with crop growth or N uptake (P > 0.05), and greater pH had only a weak positive relationship with growth at intermediate application rates. Greater nutrient contents (N, P, K, Mg) improved growth at low application rates of 0.2% and 0.5%, but Na reduced growth at high application rates of 2.0% and 7.0% in the studied fertile Alfisol.

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Crossref · 10.1007/s00374-011-0624-7

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Authors
Rajkovich, S., Enders, A., Hanley, K., Hyland, C., Zimmerman, A. R., & Lehmann, J.
Affiliations
  • Cornell University (US)
  • University of Florida (US)
Corresponding author
Lehmann, Johannes
Venue
Biology and Fertility of Soils
Published
2011-10-01
Volume
48
Issue
3
Pages
271-284
ISSN
  • 0178-2762 (ISSN-L)
  • 1432-0789
OpenAlex
W2024443425
Cited by
872
References
51
Citations by year
2026: 40 · 2025: 65 · 2024: 69 · 2023: 97 · 2022: 83 · 2021: 88 · 2020: 86 · 2019: 70 · 2018: 58 · 2017: 53 · 2016: 55 · 2015: 42 · 2014: 37 · 2013: 20 · 2012: 7
FWCI
31.86
Type
journal article
Language
en
Open access
closed
Locations
Biology and Fertility of Soils (publishedVersion)
Funders
  • National Science Foundation
  • New York State Energy Research and Development Authority
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Agricultural Science and Fertilization
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
Keywords
biochar, maize growth, nitrogen uptake, biochar feedstock, pyrolysis temperature, Alfisol, soil amendment, crop biomass, biochar application rate, soil pH, soil nutrient content, sodium toxicity, temperate soils, slow pyrolysis, nitrogen fertilizer reduction

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