Cited by 297Soil Carbon and Nitrogen DynamicsAgricultural Science and FertilizationClimate change impacts on agriculture

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Heterogeneous global crop yield response to biochar: a meta-regression analysis

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Crane-Droesch, Andrew, Abiven, Samuel, Jeffery, Simon, Torn, Margaret S·2013·Environmental Research Letters

DOI 10.1088/1748-9326/8/4/044049

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Abstract

Biochar may contribute to climate change mitigation at negative cost by sequestering photosynthetically fixed carbon in soil while increasing crop yields. The magnitude of biochar's potential in this regard will depend on crop yield benefits, which have not been well-characterized across different soils and biochars. Using data from 84 studies, we employ meta-analytical, missing data, and semiparametric statistical methods to explain heterogeneity in crop yield responses across different soils, biochars, and agricultural management factors, and then estimate potential changes in yield across different soil environments globally. We find that soil cation exchange capacity and organic carbon were strong predictors of yield response, with low cation exchange and low carbon associated with positive response. We also find that yield response increases over time since initial application, compared to non-biochar controls. High reported soil clay content and low soil pH were weaker predictors of higher yield response. No biochar parameters in our dataset—biochar pH, percentage carbon content, or temperature of pyrolysis—were significant predictors of yield impacts. Projecting our fitted model onto a global soil database, we find the largest potential increases in areas with highly weathered soils, such as those characterizing much of the humid tropics. Richer soils characterizing much of the world's important agricultural areas appear to be less likely to benefit from biochar.

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(2021) · PeerJ · doi:10.7287/peerj.11889v0.1/reviews/3
Peer Review #2 of "Influence of tied-ridge with biochar amendment on runoff, sediment losses, and alfalfa yield in northwestern China (v0.2)"
(2021) · PeerJ · doi:10.7287/peerj.11889v0.2/reviews/2
Peer Review #2 of "Influence of tied-ridge with biochar amendment on runoff, sediment losses, and alfalfa yield in northwestern China (v0.1)"
(2021) · PeerJ · doi:10.7287/peerj.11889v0.1/reviews/2
Peer Review #1 of "Influence of tied-ridge with biochar amendment on runoff, sediment losses, and alfalfa yield in northwestern China (v0.2)"
(2021) · PeerJ · doi:10.7287/peerj.11889v0.2/reviews/1
Peer Review #1 of "Influence of tied-ridge with biochar amendment on runoff, sediment losses, and alfalfa yield in northwestern China (v0.1)"
(2021) · PeerJ · doi:10.7287/peerj.11889v0.1/reviews/1
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Authors: Crane-Droesch, A., Abiven, S., Jeffery, S., & Torn, M. S.
Affiliations: University of Zurich (CH)
Wageningen University & Research (NL)
Lawrence Berkeley National Laboratory (US)
ORCID: Abiven, Samuel
Jeffery, Simon
Torn, Margaret S
Venue: Environmental Research Letters
Publisher: IOP Publishing
Published: 2013-12-01
Volume: 8
Issue: 4
Pages: 044049
ISSN: 1748-9326 (ISSN-L)
DOI: 10.1088/1748-9326/8/4/044049
OpenAlex: W2095761197
Cited by: 297
References: 54
Citations by year: 2026: 15 · 2025: 20 · 2024: 17 · 2023: 16 · 2022: 18 · 2021: 34 · 2020: 42 · 2019: 28 · 2018: 26 · 2017: 26 · 2016: 21 · 2015: 24 · 2014: 10
FWCI: 26.56
Type: journal article
Language: en
Open access: gold
doi.org
Licence: cc-by
iopscience.iop.org/info/page/text-and-data-mining (tdm, 15 d)
creativecommons.org/licenses/by/3.0/ (vor, 15 d)
Locations: Environmental Research Letters (publishedVersion, cc-by)
Socio-Environmental Systems Modeling (acceptedVersion)
Zurich Open Repository and Archive (University of Zurich) (submittedVersion, other-oa)
DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
eScholarship (California Digital Library) (submittedVersion)
Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Zurich Open Repository and Archive (University of Zurich)
Funders: National Science Foundation (DEAC02-05CH11231, 1053575)
U.S. Department of Energy (-AC02-05CH11231, 05CH11231, OCI-1053575, DE AC02 05CH11231, DE-AC02-)
Office of Science (OCI-1053575, DEAC02–05CH11231, AC02-05CH11231, DE-AC02, 05CH11231)
Biological and Environmental Research (05CH11231, DE-AC02 − 05CH11231, AC02-05CH11231)
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
Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Climate change impacts on agriculture
Keywords: biochar, crop yield response, soil carbon sequestration, cation exchange capacity, soil organic carbon, soil weathering, soil clay content, soil pH, pyrolysis temperature, biochar pH, climate change mitigation, agricultural management

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Heterogeneous global crop yield response to biochar: a meta-regression analysis

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