dc.contributor.author | Laurence, Luke | |
dc.date.accessioned | 2024-06-07T18:13:21Z | |
dc.date.available | 2024-06-07T18:13:21Z | |
dc.date.issued | 2024-06-07 | |
dc.identifier.uri | http://hdl.handle.net/10222/84278 | |
dc.description.abstract | Decision support tools (DSTs) and a framework for incorporating estimates of growing season nitrogen (N) mineralization (GSN) in soil, using analysis of total soil N (TN) to quantify the stable N pool, and biological nitrogen availability (BNA) to quantify the labile N pool in a zero- plus first-order kinetic function, were developed to inform N fertilizer recommendations. Overall, DSTs for biological processes as related to soil N dynamics were achieved using pedotransfer functions (PTF), digital soil mapping (DSM) and machine learning. From these results, a tiered approach to N fertilizer management was proposed. The DSM, as tier 1, provides estimates of GSN to producers who do not have point data; the PTF, as tier 2, is applied for producers who have surrogate data; and subsequent tiers are for producers with direct measures for N response variables. | en_US |
dc.language.iso | en | en_US |
dc.subject | soil nitrogen mineralization | en_US |
dc.subject | pedotransfer functions | en_US |
dc.subject | digital soil mapping | en_US |
dc.subject | machine learning | en_US |
dc.title | Developing Pedotransfer Functions and Spatial Estimates of Growing Season Nitrogen Mineralization to Inform Improved Nitrogen Management Strategies in Prince Edward Island | en_US |
dc.date.defence | 2024-05-30 | |
dc.contributor.department | Department of Plant, Food and Environmental Sciences | en_US |
dc.contributor.degree | Doctor of Philosophy | en_US |
dc.contributor.external-examiner | David Pelster | en_US |
dc.contributor.thesis-reader | Brandon Heung | en_US |
dc.contributor.thesis-reader | Judith Nyiraneza | en_US |
dc.contributor.thesis-supervisor | David Burton | en_US |
dc.contributor.ethics-approval | Not Applicable | en_US |
dc.contributor.manuscripts | Yes | en_US |
dc.contributor.copyright-release | Not Applicable | en_US |