The Nitrogen Dynamics of Newly Developed Lignite-Based Controlled-Release Fertilisers in the Soil-Plant Cycle

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dc.citation.issue23
dc.citation.volume11
dc.contributor.authorGunaratnam A
dc.contributor.authorGrafton M
dc.contributor.authorJeyakumar P
dc.contributor.authorBishop P
dc.contributor.authorDavies C
dc.contributor.authorMcCurdy M
dc.coverage.spatialSwitzerland
dc.date.available2022-11-29
dc.date.available2022-11-26
dc.date.issued2022-11-29
dc.description(c) The Author/s
dc.description.abstractThe effect of newly developed controlled-release fertilisers (CRFs); Epox5 and Ver-1 and two levels of Fe2+ applications (478 and 239 kg-FeSO4 ha−1) on controlling nitrogen (N) losses, were tested on ryegrass, in a climate-controlled lysimeter system. The Epox5 and Ver-1 effectively decreased the total N losses by 37 and 47%, respectively, compared to urea. Nitrous oxide (N2O) emissions by Ver-1 were comparable to urea. However, Epox5 showed significantly higher (p < 0.05) N2O emissions (0.5 kg-N ha−1), compared to other treatments, possibly due to the lock-off nitrogen in Epox5. The application of Fe2+ did not show a significant effect in controlling the N leaching loss and N2O emission. Therefore, a dissimilatory nitrate reduction and chemodenitrification pathways were not pronounced in this study. The total dry matter yield, N accumulation, N use efficiency and soil residual N were not significantly different among any N treatments. Nevertheless, the N accumulation of CRFs was lower in the first month, possibly due to the slow release of urea. The total root biomass was significantly (p < 0.05) lower for Epox5 (35%), compared to urea. The hierarchical clustering of all treatments revealed that Ver-1 outperformed other treatments, followed by Epox5. Further studies are merited to identify the potential of Fe2+ as a controlling agent for N losses.
dc.description.publication-statusPublished online
dc.identifierhttps://www.ncbi.nlm.nih.gov/pubmed/36501328
dc.identifierplants11233288
dc.identifier.citationPlants (Basel), 2022, 11 (23)
dc.identifier.doi10.3390/plants11233288
dc.identifier.elements-id458187
dc.identifier.harvestedMassey_Dark
dc.identifier.issn2223-7747
dc.languageeng
dc.publisherMDPI AG
dc.relation.isPartOfPlants (Basel)
dc.rightsCC BY
dc.subjectFe2+ application
dc.subjectcontrolled-release fertiliser
dc.subjectlock-off nitrogen
dc.subjectnitrogen leaching
dc.subjectnitrous oxide emission
dc.subjectsoil residual nitrogen
dc.titleThe Nitrogen Dynamics of Newly Developed Lignite-Based Controlled-Release Fertilisers in the Soil-Plant Cycle
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Agriculture & Environment
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