Amending a tropical Arenosol: increasing shares of biochar and clay improve the nutrient sorption capacity

dc.contributor.authorBeusch, Christine
dc.contributor.authorMelzer, Dennis
dc.contributor.authorCierjacks, Arne
dc.contributor.authorKaupenjohann, Martin
dc.date.accessioned2022-09-14T14:16:52Z
dc.date.available2022-09-14T14:16:52Z
dc.date.issued2022-03-01
dc.description.abstractTropical Arenosols may be challenging for agricultural use, particularly in semi-arid regions. The aim of this study was to evaluate the impact of the addition of increasing shares of biochar and clay on the nutrient sorption capacity of a tropical Arenosol. In batch equilibrium experiments, the sorption of ammonium-N (NH+4-N), nitrate-N (NO−3-N), potassium (K+), and phosphate-P (PO3−4-P) was quantified for mixtures of an Arenosol with increasing shares of biochar and clay (1%, 2.5%, 5%, 10%, 100%) and the unmixed Arenosol, biochar, and clay. The mid-temperature biochar was produced from Prosopis juliflora feedstock; the clayey material was taken from the sedimentary parent material of a temporarily dry lake. Only the Arenosol–biochar mixture with 10% biochar addition and the biochar increased the NH+4-N maximum sorption capacity (qmax) of the Arenosol, by 34% and 130%, respectively. The qmax of PO3−4-P slightly increased with ascending biochar shares (1–10%) by 14%, 30%, 26%, and 42%, whereas the undiluted biochar released PO3−4-P. Biochar addition slightly reduced NO−3-N release from the Arenosol but strongly induced K+ release. On the other hand, clay addition of 10% and clay itself augmented qmax of NH+4-N by 30% and 162%; ascending clay rates (1–100%) increased qmax for PO3−4-P by 78%, 130%, 180%, 268%, and 712%. Clay rates above 5% improved K+ sorption; however, no qmax values could be derived. Sorption of NO−3-N remained unaffected by clay amendment. Overall, clay addition proved to enhance the nutrient sorption capacity of the Arenosol more effectively than biochar; nonetheless, both materials may be promising amendments to meliorate sandy soils for agricultural use in the semi-arid tropics.en
dc.description.sponsorshipBMBF, 01LL0904A, Verbundvorhaben INNOVATE: Nachhaltige Nutzung von Stauseen durch innovative Kopplung von aquatischen und terrestrischen Ökosystemfunktionen - Teilvorhaben 1: Verbundkoordination, Grüne Leber und Ökonomieen
dc.description.sponsorshipBMBF, 01LL0904B, Verbundvorhaben INNOVATE: Nachhaltige Nutzung von Stauseen durch innovative Kopplung von aquatischen und terrestrischen Ökosystemfunktionen - Teilvorhaben 2: Terrestrische Ökosystemfunktionenen
dc.description.sponsorshipBMBF, 01LL0904C, Verbundvorhaben INNOVATE: Nachhaltige Nutzung von Stauseen durch innovative Kopplung von aquatischen und terrestrischen Ökosystemfunktionen - Teilvorhaben 3: Aquatische Ökosystemfunktionenen
dc.description.sponsorshipBMBF, 01LL0904D, Verbundvorhaben INNOVATE: Nachhaltige Nutzung von Stauseen durch innovative Kopplung von aquatischen und terrestrischen Ökosystemfunktionen - Teilvorhaben 4: Modellierungen
dc.description.sponsorshipBMBF, 01LL0904E, Verbundvorhaben INNOVATE: Nachhaltige Nutzung von Stauseen durch innovative Kopplung von aquatischen und terrestrischen Ökosystemfunktionen - Teilvorhaben 5: Biodiversitäten
dc.identifier.eissn2524-7867
dc.identifier.issn2524-7972
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/17462
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-16243
dc.language.isoenen
dc.relation.ispartof10.14279/depositonce-16030
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc550 Geowissenschaftende
dc.subject.othercoarse-textured soilsen
dc.subject.otherbiocharen
dc.subject.otherclayen
dc.subject.otherbatch equilibrium experimenten
dc.subject.othersorption isothermsen
dc.titleAmending a tropical Arenosol: increasing shares of biochar and clay improve the nutrient sorption capacityen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber16en
dcterms.bibliographicCitation.doi10.1007/s42773-022-00135-4en
dcterms.bibliographicCitation.journaltitleBiocharen
dcterms.bibliographicCitation.originalpublishernameSpringer Natureen
dcterms.bibliographicCitation.originalpublisherplaceHeidelbergen
dcterms.bibliographicCitation.volume4en
tub.accessrights.dnbfreeen
tub.affiliationFak. 6 Planen Bauen Umwelt::Inst. Ökologie::FG Bodenkundede
tub.affiliation.facultyFak. 6 Planen Bauen Umweltde
tub.affiliation.groupFG Bodenkundede
tub.affiliation.instituteInst. Ökologiede
tub.publisher.universityorinstitutionTechnische Universität Berlinen

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