Show simple item record

dc.contributor.authorAsadyar, L
dc.contributor.authorXu, CY
dc.contributor.authorWallace, HM
dc.contributor.authorXu, Z
dc.contributor.authorReverchon, F
dc.contributor.authorBai, SH
dc.date.accessioned2020-10-16T03:05:16Z
dc.date.available2020-10-16T03:05:16Z
dc.date.issued2020
dc.identifier.issn0944-1344
dc.identifier.doi10.1007/s11356-020-11016-3
dc.identifier.urihttp://hdl.handle.net/10072/398426
dc.description.abstractBiochar has strong potential to improve nitrogen (N) use efficiency in both agricultural and horticultural systems. Biochar is usually co-applied with full rates of fertiliser. However, the extent to which N cycling can be affected after biochar application to meet plant N requirement remains uncertain. This study aimed to explore N cycling up to 2 years after biochar application. We applied pine woodchip biochar at 0, 10 and 30 t ha−1 (B0, B10, B30, respectively) in a macadamia orchard and evaluated the N isotope composition (δ15N) of soil, microbial biomass and macadamia leaves. Soil total N (TN) and inorganic N pools were also measured up to 2 years after biochar application. Biochar did not alter soil TN but soil NO3−-N increased at months 12 and 24 after biochar application. Soil NO3−-N concentrations were always over ideal levels of 15 μg g−1 in B30 throughout the study. Stepwise regression indicated that foliar δ15N decreases after biochar application were explained by increased NO3−-N concentrations in B30. Foliar TN and photosynthesis were not affected by biochar application. The soil in the high rate biochar plots had excess NO3−-N concentrations (over 30 μg g−1) from month 20 onwards. Therefore, N fertiliser applications could be adjusted to prevent excessive N inputs and increase farm profitability.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer Science and Business Media LLC
dc.relation.ispartofjournalEnvironmental Science and Pollution Research
dc.subject.fieldofresearchChemical sciences
dc.subject.fieldofresearchHorticultural production
dc.subject.fieldofresearchSoil chemistry and soil carbon sequestration (excl. carbon sequestration science)
dc.subject.fieldofresearchcode34
dc.subject.fieldofresearchcode3008
dc.subject.fieldofresearchcode410604
dc.subject.keywordsMacadamia integrifolia
dc.subject.keywordsNitrogen isotope composition
dc.subject.keywordsNitrogen retention
dc.subject.keywordsPhotosynthesis
dc.subject.keywordsWood-based biochar
dc.titleSoil-plant nitrogen isotope composition and nitrogen cycling after biochar applications
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationAsadyar, L; Xu, CY; Wallace, HM; Xu, Z; Reverchon, F; Bai, SH, Soil-plant nitrogen isotope composition and nitrogen cycling after biochar applications, Environmental Science and Pollution Research, 2020
dcterms.dateAccepted2020-09-25
dc.date.updated2020-10-16T03:02:02Z
gro.description.notepublicThis publication has been entered in Griffith Research Online as an advanced online version.
gro.hasfulltextNo Full Text
gro.griffith.authorXu, Zhihong
gro.griffith.authorHosseini-Bai, Shahla


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record