Cristin-resultat-ID: 2014036
Sist endret: 26. januar 2023, 20:32
NVI-rapporteringsår: 2022
Resultat
Vitenskapelig oversiktsartikkel/review
2022

Enhancing plant N uptake with biochar-based fertilizers: limitation of sorption and prospects

Bidragsytere:
  • Daniel Rasse
  • Simon Mark Weldon
  • Erik Joner
  • Stephen Joseph
  • Claudia I. Kammann
  • Xiaoyu Liu
  • mfl.

Tidsskrift

Plant and Soil
ISSN 0032-079X
e-ISSN 1573-5036
NVI-nivå 2

Om resultatet

Vitenskapelig oversiktsartikkel/review
Publiseringsår: 2022
Volum: 475
Sider: 213 - 236
Open Access

Importkilder

Scopus-ID: 2-s2.0-85126832621

Beskrivelse Beskrivelse

Tittel

Enhancing plant N uptake with biochar-based fertilizers: limitation of sorption and prospects

Sammendrag

Background Biochar-based fertilizer products (BCF) have been reported to increase both crop yield and N-use efficiency. Such positive effects are often assumed to result from the slow-release of N adsorbed on BCF structures. However, a careful review of the literature suggests that actual mechanisms remain uncertain, which hampers the development of efficient BCF products. Scope Here, we aim at reviewing BCF mechanisms responsible for enhanced N uptake by plants, and evaluate the potential for further improvement. We review the capacity of biochar structures to adsorb and release N forms, the biochar properties supporting this effect, and the methods that have been proposed to enhance this effect. Conclusions Current biochar products show insufficient sorption capacity for the retention of N forms to support the production of slow-release BCFs of high enough N concentration. Substantial slow-release effects appear to require conventional coating technology. Sorption capacity can be improved through activation and additives, but currently not to the extent needed for concentrated BCFs. Positive effects of commercial BCFs containing small amount of biochar appear to result from pyrolysis-derived biostimulants. Our review highlights three prospects for improving N retention: 1) sorption of NH3 gas on specifically activated biochar, 2) synergies between biochar and clay porosities, which might provide economical sorption enhancement, and 3) physical loading of solid N forms within biochar. Beyond proof of concept, quantitative nutrient studies are needed to ascertain that potential future BCFs deliver expected effects on both slow-release and N use efficiency.

Bidragsytere

Daniel Rasse

  • Tilknyttet:
    Forfatter
    ved Divisjon for miljø og naturressurser ved Norsk institutt for bioøkonomi

Simon Mark Weldon

  • Tilknyttet:
    Forfatter
    ved Miljøvitenskap og naturforvaltning ved Norges miljø- og biovitenskapelige universitet
  • Tilknyttet:
    Forfatter
    ved Divisjon for miljø og naturressurser ved Norsk institutt for bioøkonomi
Aktiv cristin-person

Erik Joner

  • Tilknyttet:
    Forfatter
    ved Divisjon for miljø og naturressurser ved Norsk institutt for bioøkonomi

Stephen Joseph

  • Tilknyttet:
    Forfatter
    ved University of New South Wales
  • Tilknyttet:
    Forfatter
    ved University of Wollongong
  • Tilknyttet:
    Forfatter
    ved Nanjing Agricultural University

Claudia I. Kammann

  • Tilknyttet:
    Forfatter
    ved Hochschule Geisenheim University
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