The effect of nitrate and gibberellin treatment on carbon storage and nitrogen uptake efficiency following defoliation of lolium perenne
| dc.contributor.author | Brennan, Mariann Phyllis | |
| dc.date.accessioned | 2018-03-13T19:29:29Z | |
| dc.date.available | 2018-03-13T19:29:29Z | |
| dc.date.issued | 2017 | en |
| dc.description.abstract | Agriculture accounts for almost 50 % of New Zealand’s greenhouse gas emissions. The high level of nitrogenous fertilisers used to stimulate plant growth causes emissions of NO2 and leaching of N into waterways. In order to address these issues and improve N uptake efficiency in Lolium perenne L., a widely used forage grass, the effect of the day (postdefoliation) of N application, in conjunction with the addition of GA3, on plant growth was observed. Parameters measured included N uptake and fructan levels which are the main storage carbohydrate of grasses. Results indicate that the application of fertiliser between day 6 and 11 post‐defoliation may be beneficial in increasing N uptake and reducing leaching of N as carbohydrate levels have been restored in leaves, leaving the plant less C starved and more able to take up N. The application of GA3 was not found to have an effect on N uptake. The effect of N form and concentration on root system architecture in vitro, indicates that arginine, an organic form of nitrogen, may be beneficial in improving N uptake and growth of plants if used as a fertiliser, compared to nitrate, a commonly used inorganic form of fertiliser. | en |
| dc.identifier.uri | http://hdl.handle.net/10092/15070 | |
| dc.identifier.uri | http://dx.doi.org/10.26021/7663 | |
| dc.language | English | |
| dc.language.iso | en | |
| dc.publisher | University of Canterbury | en |
| dc.rights | All Rights Reserved | en |
| dc.rights.uri | https://canterbury.libguides.com/rights/theses | en |
| dc.title | The effect of nitrate and gibberellin treatment on carbon storage and nitrogen uptake efficiency following defoliation of lolium perenne | en |
| dc.type | Theses / Dissertations | en |
| thesis.degree.discipline | Biological Sciences | en |
| thesis.degree.grantor | University of Canterbury | en |
| thesis.degree.level | Masters | en |
| thesis.degree.name | Master of Science | en |
| uc.bibnumber | 2602710 | |
| uc.college | Faculty of Science | en |