dc.contributor.author | Spence, Jennifer | |
dc.date.accessioned | 2017-03-31T18:41:01Z | |
dc.date.available | 2017-03-31T18:41:01Z | |
dc.date.issued | 2017-03-31T18:41:01Z | |
dc.identifier.uri | http://hdl.handle.net/10222/72776 | |
dc.description | Novel method to study net N mineralization and denitrification rates in soil | en_US |
dc.description.abstract | An investigation of the use of a nitrification inhibitor (NI) to simultaneously measure the rates of net nitrogen (N) mineralization, as an accumulation of ammonium (NH4+), and denitrification, as a loss of nitrate (NO3-) over a 28-day incubation. This assay used 3, 5-dimethylpyrazole (DMP), to evaluate two levels of inhibition (0 and 200 mg DMP kg-1) in two soil textures (fine vs. coarse) over 10 levels 20 – 110% water-filled pore space (WFPS). Nitrate did not accumulate while NH4+ did which indicated DMP was inhibiting nitrification. Water content influenced N mineralization and denitrification and differed between soil textures (fine vs. coarse) and carbon intensity (manure, corn (High) vs. no amendments (Low)). The N mineralization rate was greater in fine soil (>70% WFPS); the denitrification rate was greater in coarse soil (110% WFPS). The N mineralization rate was greater in low carbon soil; denitrification was greater in high carbon soil (>80% WFPS). | en_US |
dc.language.iso | en | en_US |
dc.subject | Soils | en_US |
dc.subject | Water-Filled Pore Space | en_US |
dc.subject | Nitrification Inhibitors | en_US |
dc.subject | Mineralization | en_US |
dc.subject | Denitrification | en_US |
dc.title | Using The Nitrification Inhibitor 3, 5-dimethylpyrazole To Determine Net Nitrogen Mineralization and Denitrification Rates Simultaneously At Varying Water Contents | en_US |
dc.type | Thesis | en_US |
dc.date.defence | 2017-01-19 | |
dc.contributor.department | Faculty of Agriculture | en_US |
dc.contributor.degree | Master of Science | en_US |
dc.contributor.external-examiner | N/A | en_US |
dc.contributor.graduate-coordinator | Dr. Haibo Niu | en_US |
dc.contributor.thesis-reader | Dr. Alex Georgallas | en_US |
dc.contributor.thesis-reader | Dr. Gordon Price | en_US |
dc.contributor.thesis-supervisor | Dr. David Burton | en_US |
dc.contributor.ethics-approval | Not Applicable | en_US |
dc.contributor.manuscripts | No | en_US |
dc.contributor.copyright-release | Not Applicable | en_US |