Gorse is a ‘facultative’ N₂ fixer
dc.contributor.author | Liu, Wendy | |
dc.contributor.author | Premaratne, Manjula | |
dc.contributor.author | Cresswell, Roger J. | |
dc.contributor.author | Dash, Daniel R. | |
dc.contributor.author | Jack, David . W. | |
dc.contributor.author | Andrews, Mitchell | |
dc.date.accessioned | 2018-04-27T00:16:21Z | |
dc.date.issued | 2016 | |
dc.description.abstract | Many legumes reduce their atmospheric N₂ fixation per unit biomass in response to increased soil N availability but there are reports that some maintain a constant rate of N₂ fixation per unit biomass regardless of soil N levels. These different responses to soil N availability have been described, respectively, as ‘facultative’ and ‘obligate’ N₂ fixation strategies. Views in the literature differ if gorse is a facultative or obligate N₂ fixer. Here, firstly, the proportion of N derived from the atmosphere (%Ndfa) was assessed for mature gorse plants mainly in hedges bordering intensive agricultural land at different sites in the Selwyn district, Canterbury, New Zealand using the ¹⁵N natural abundance technique. Secondly, the effect of nitrate (NO₃⁻) supply on %Ndfa was determined for gorse seedlings under glasshouse conditions using ¹⁵NO₃⁻. Under field conditions, values ranged from 14.7-88.0 %Ndfa. In the glasshouse, %Ndfa values decreased from 97 when no N was supplied to 24 %Ndfa when N supply was increased to the equivalent of 200 kg N/ha. It is concluded that gorse shows a facultative N₂ fixation strategy. | en |
dc.format.extent | 181-184 | en |
dc.identifier.citation | Liu, W., Premaratne, M., Cresswell, R., Dash, D., Jack, D., & Andrews, M. (2016). Gorse is a ‘facultative’ N₂ fixer. Journal of New Zealand Grasslands, 78, 181-184. Available from https://www.grassland.org.nz/publications/nzgrassland_publication_2819.pdf | |
dc.identifier.eissn | 2463-2880 | en |
dc.identifier.issn | 2463-2872 | en |
dc.identifier.uri | https://hdl.handle.net/10182/9269 | |
dc.language.iso | en | |
dc.publisher | NZ Grassland Association | |
dc.relation | The original publication is available from - NZ Grassland Association - https://www.grassland.org.nz/publications/nzgrassland_publication_2831.pdf | en |
dc.relation.isPartOf | Journal of New Zealand Grasslands | en |
dc.rights.ccname | Attribution-NonCommercial-ShareAlike 4.0 International | |
dc.rights.ccuri | https://creativecommons.org/licenses/by-nc-sa/4.0/ | |
dc.subject | legume | en |
dc.subject | nitrate | en |
dc.subject | ¹⁵N natural abundance | en |
dc.subject | nitrate reductase activity | en |
dc.subject | gorse | en |
dc.subject | Ulex europaeus | en |
dc.subject.anzsrc | ANZSRC::0503 Soil Sciences | en |
dc.subject.anzsrc | ANZSRC::0701 Agriculture, Land and Farm Management | en |
dc.subject.anzsrc | ANZSRC::050304 Soil Chemistry (excl. Carbon Sequestration Science) | en |
dc.title | Gorse is a ‘facultative’ N₂ fixer | en |
dc.type | Journal Article | |
lu.contributor.unit | Lincoln University | |
lu.contributor.unit | Faculty of Agriculture and Life Sciences | |
lu.contributor.unit | Department of Agricultural Sciences | |
lu.contributor.unit | Department of Soil and Physical Sciences | |
lu.identifier.orcid | 0000-0002-3875-7290 | |
pubs.notes | https://www.grassland.org.nz/viewpublication.php?pubID=399 | en |
pubs.publication-status | Published | en |
pubs.publisher-url | https://www.grassland.org.nz/publications/nzgrassland_publication_2831.pdf | en |
pubs.volume | 78 | en |
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