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nvestigation, prospects, and economic scenarios for the use of biochar in small-scale agriculture in tropical

2025Artigo científico Acesso aberto
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dc.contributor.authorJohn, Vinicius
dc.contributor.authorBraga, Ana Rita de Oliveira
dc.contributor.authorSousa, Heiriane Martins
dc.contributor.authorDanielli, Criscian Kellen Amaro de Oliveira DanielliCriscian Kellen Amaro de Oliveira
dc.contributor.authorDanielli, Filipe Eduardo
dc.contributor.authorFalcão, Newton Paulo de Souza
dc.contributor.authorGuerra, João
dc.contributor.authorLasmar, Dimas José
dc.contributor.authorMarques-dos-Santos, Cláudia S. C.
dc.date.accessioned2025-08-13T14:49:57Z
dc.date.available2025-08-13T14:49:57Z
dc.date.issued2025
dc.description.abstractThis study investigates the production and economic feasibility of biochar for smallholder and family farms in Central Amazonia, with potential implications for other tropical regions. The costs of construction of a prototype mobile kiln and biochar production were evaluated, using small-sized biomass from acai (Euterpe oleracea Mart.) agro-industrial residues as feedstock. The biochar produced was characterised in terms of its liming capacity (calcium carbonate equivalence, CaCO3eq), nutrient content via organic fertilisation methods, and ash analysis by ICP-OES. Field trials with cowpea assessed economic outcomes, as well scenarios of fractional biochar application and cost comparison between biochar production in the prototype kiln and a traditional earth-brick kiln. The prototype kiln showed production costs of USD 0.87–2.06 kg−1, whereas traditional kiln significantlyreduced costs (USD 0.03–0.08 kg−1). Biochar application alone increased cowpea revenue by 34%, while combining biochar and lime raised cowpea revenues by up to 84.6%. Owingto high input costs and the low value of the crop, the control treatment generated greater net revenue compared to treatments using lime alone. Moreover, biochar produced in traditional kilns provided a 94% increase in net revenue compared to liming. The estimated externalities indicated that carbon credits represented the most significant potential source of income (USD 2217 ha−1). Finally, fractional biochar application in ten years can retainover 97% of soil carbon content, demonstrating potential for sustainable agriculture and carbon sequestration and a potential further motivation for farmers if integrated into carbon markets. Public policies and technological adaptations are essential for facilitating biocharadoption by small-scale tropical farmers.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationJohn, V., Braga, A. R. d. O., Danielli, C. K. A. d. O., Sousa, H. M., Danielli, F. E., Falcão, N. P. d. S., Guerra, J., Lasmar, D. J., & Marques-dos-Santos, C. S. C. (2025). Investigation, prospects, and economic scenarios for the use of biochar in small-scale agriculture in tropical. Agriculture, Vol. 15,1700, pp. 1-21. DOI: 10.3390/agriculture15151700pt_PT
dc.identifier.doi10.3390/agriculture15151700pt_PT
dc.identifier.eissn2077-0472
dc.identifier.urihttp://hdl.handle.net/10400.5/102858
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relation01.02.016301.01742/2021pt_PT
dc.relationForest Research Centre
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectbiocharpt_PT
dc.subjecteconomic feasibilitypt_PT
dc.subjecttropicalpt_PT
dc.subjectsmallholder agriculturept_PT
dc.subjectfamily farmingpt_PT
dc.subjectsmall-sized biomasspt_PT
dc.subjectkiln technologypt_PT
dc.subjectcarbon sequestrationpt_PT
dc.titlenvestigation, prospects, and economic scenarios for the use of biochar in small-scale agriculture in tropicalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberUIDB/00239/2020
oaire.awardTitleForest Research Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00239%2F2020/PT
oaire.citation.endPage21pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleAgriculturept_PT
oaire.citation.volume15pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameGuerra
person.givenNameJoão
person.identifier3042135
person.identifier.ciencia-id7413-4564-D2A2
person.identifier.orcid0000-0003-1918-2273
person.identifier.ridL-3280-2014
person.identifier.scopus-author-id13409273700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication318e6933-29bc-479f-87b0-93131a94c645
relation.isAuthorOfPublication.latestForDiscovery318e6933-29bc-479f-87b0-93131a94c645
relation.isProjectOfPublication56bd0ae9-f8da-4344-b9a2-f633d4f68b89
relation.isProjectOfPublication.latestForDiscovery56bd0ae9-f8da-4344-b9a2-f633d4f68b89

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