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dc.contributor.authorChew, Jinkiat
dc.contributor.authorZhu, Longlong
dc.contributor.authorNielsen, Shaun
dc.contributor.authorGraber, Ellen
dc.contributor.authorMitchell, David RG
dc.contributor.authorHorvat, Joseph
dc.contributor.authorMohammed, Mohanad
dc.contributor.authorLiu, Minglong
dc.contributor.authorvan Zwieten, Lukas
dc.contributor.authorDonne, Scott
dc.contributor.authorMunroe, Paul
dc.contributor.authorTaherymoosavi, Sarasadat
dc.contributor.authorPace, Ben
dc.contributor.authorRawal, Aditya
dc.contributor.authoret al.
dc.date.accessioned2020-09-07T04:53:41Z
dc.date.available2020-09-07T04:53:41Z
dc.date.issued2020
dc.identifier.issn0048-9697
dc.identifier.doi10.1016/j.scitotenv.2019.136431
dc.identifier.urihttp://hdl.handle.net/10072/397149
dc.description.abstractBiochar-based compound fertilizers (BCF) and amendments have proven to enhance crop yields and modify soil properties (pH, nutrients, organic matter, structure etc.) and are now in commercial production in China. While there is a good understanding of the changes in soil properties following biochar addition, the interactions within the rhizosphere remain largely unstudied, with benefits to yield observed beyond the changes in soil properties alone. We investigated the rhizosphere interactions following the addition of an activated wheat straw BCF at an application rates of 0.25% (g·g-1 soil), which could potentially explain the increase of plant biomass (by 67%), herbage N (by 40%) and P (by 46%) uptake in the rice plants grown in the BCF-treated soil, compared to the rice plants grown in the soil with conventional fertilizer alone. Examination of the roots revealed that micron and submicron-sized biochar were embedded in the plaque layer. BCF increased soil Eh by 85 mV and increased the potential difference between the rhizosphere soil and the root membrane by 65 mV. This increased potential difference lowered the free energy required for root nutrient accumulation, potentially explaining greater plant nutrient content and biomass. We also demonstrate an increased abundance of plant-growth promoting bacteria and fungi in the rhizosphere. We suggest that the redox properties of the biochar cause major changes in electron status of rhizosphere soils that drive the observed agronomic benefits.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom136431
dc.relation.ispartofjournalScience of the Total Environment
dc.relation.ispartofvolume713
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchcode41
dc.subject.keywordsScience & Technology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsEnvironmental Sciences
dc.subject.keywordsEnvironmental Sciences & Ecology
dc.subject.keywordsBiochar compound fertilizers
dc.titleBiochar-based fertilizer: Supercharging root membrane potential and biomass yield of rice
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationChew, J; Zhu, L; Nielsen, S; Graber, E; Mitchell, DRG; Horvat, J; Mohammed, M; Liu, M; van Zwieten, L; Donne, S; Munroe, P; Taherymoosavi, S; Pace, B; Rawal, A; Hook, J; Marjo, C; Thomas, DS; Pan, G; Li, L; Bian, R; McBeath, A; Bird, M; Thomas, T; Husson, O; Solaiman, Z; Joseph, S; Fan, X, Biochar-based fertilizer: Supercharging root membrane potential and biomass yield of rice, Science of the Total Environment, 2020, 713, pp. 136431
dcterms.dateAccepted2019-12-29
dcterms.licensehttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.date.updated2020-09-07T04:50:27Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorVan Zwieten, Lukas


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