Cited by 928Soil Carbon and Nitrogen DynamicsAgricultural Science and FertilizationThermochemical Biomass Conversion Processes

The role of biochar and biochar-compost in improving soil quality and crop performance: a review

Agegnehu, Getachew, Srivastava, A.K., Bird, Michael I.·2017·Applied Soil Ecology

Abstract

Multiple nutrient deficiencies related to severe soil fertility depletion have emerged as the major constraint to the sustainability of agriculture on a global scale. Use of biochar and biochar-compost mixtures from different alternative organic sources have been proposed as an option for improving soil fertility, restoring degraded land, and mitigating the emissions of greenhouse gasses associated with agriculture. We review the findings of 634 publications in the last decade on biochar and biochar-compost mixtures as soil amendments in order to identify the potential gaps in our understanding of the role of these amendments in agriculture. We found that: i) the majority of published studies have been carried out in developed countries where soils are less impaired in terms of food production capacity than in many developing countries; ii) studies on biochar produced in small kilns are more common than biochars produced at commercial scale in developed countries, whereas biochars produced using traditional techniques are more commonly used than biochars produced in modern pyrolysis units in developing countries; iii) laboratory and greenhouse studies are more common than field studies; and iv) wood and municipal wastes were the major feedstock for the preparation of biochar compared to crop residues and manures. Although, biochar-compost application proved to be more generally effective in improving soil properties and crop yields (field crops and horticulture crops) than biochar alone, along with desired soil properties, could be a feasible alternative to remediate the degraded soils and improve their productivity potential in the long-term. Overall, a lack of long-term, well-designed field studies on the efficacy of biochar and biochar-compost mixtures on different soil types and agro-climatic zones are limiting our current understanding of biochar's potential to enhance crop production and mitigate climate change. We further suggest that greater collaboration between researchers, biochar producers, and policy makers is required to advance the research and uptake of this important technology at a global scale.

Integrity signals

Registry

Crossref · 10.1016/j.apsoil.2017.06.008

Cites

198 of 198 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Agegnehu, G., Srivastava, A. K., & Bird, M. I.
Affiliations
  • James Cook University (AU)
  • Central Citrus Research Institute (IN)
Corresponding author
Agegnehu, Getachew
Venue
Applied Soil Ecology
Publisher
Elsevier BV
Published
2017-10
Volume
119
Pages
156-170
ISSN
0929-1393 (ISSN-L)
OpenAlex
W2727373143
Cited by
928
References
198
Citations by year
2026: 123 · 2025: 147 · 2024: 130 · 2023: 129 · 2022: 108 · 2021: 98 · 2020: 94 · 2019: 60 · 2018: 32 · 2017: 6
FWCI
57.54
Type
journal article
Language
en
Open access
closed
Locations
  • Applied Soil Ecology (publishedVersion)
  • ResearchOnline - JCU (James Cook University) (submittedVersion)
Funders
Australian Federal Government's Filling the Research Gap Round 1- National Soil Carbon Program
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, soil amendment, soil fertility, soil quality, crop yield, degraded area recovery, greenhouse gas emissions reduction, pyrolysis feedstock, crop residues, manure, soil nutrient deficiency, horticultural crops, fieldwork

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review