dc.contributor.author | Van Esbroeck, Christopher J. G. | |
dc.date.accessioned | 2015-02-17 18:25:58 (GMT) | |
dc.date.available | 2015-02-17 18:25:58 (GMT) | |
dc.date.issued | 2015-02-17 | |
dc.date.submitted | 2015 | |
dc.identifier.uri | http://hdl.handle.net/10012/9175 | |
dc.description.abstract | This study examined the role of tile drainage and overland flow in field-scale phosphorus (P) export from reduced tillage systems, as well as the influence of event type and antecedent conditions on P export during major runoff events. Three field-scale sites representing a range of soil, climatic, and management conditions, were monitored intensely for an 18 month period. Annual P export from the sites ranged between 0.267 and 0.419 kg/ha. The non-growing season (NGS) was an important period for P export due to the volume of discharge during the period. Tile drainage contributed the majority of combined annual discharge at all sites (78-83%). Tile drainage was an equal or dominant contributor to annual total P (TP) export. Overland flow was the dominant transport pathway for soluble reactive P (SRP) at two of the three sites. The nature of the discharge events (e.g. rain on soil, rain on snow, and radiation melt) influenced P speciation in runoff. Particulate P + soluble unreactive P (PP+SUP) concentrations were highest during events where rain fell on bare soil. The proportion of TP as SRP in major events appeared to decline over the NGS. Understanding the seasonality of P export, the relative role of tile drainage and overland flow, and the influence of event type will improve our ability to manage non-point source P export. | en |
dc.language.iso | en | en |
dc.publisher | University of Waterloo | en |
dc.subject | Phosphorus Export | en |
dc.subject | Tile Drainage | en |
dc.subject | Overland Flow | en |
dc.subject | Edge of Field Monitoring | en |
dc.subject | Reduced Tillage Systems | en |
dc.title | Edge of Field Phosphorus Export via Tile Drainage and Overland Flow from Reduced Tillage Systems in Ontario | en |
dc.type | Master Thesis | en |
dc.pending | false | |
dc.subject.program | Geography | en |
uws-etd.degree.department | Geography | en |
uws-etd.degree | Master of Science | en |
uws.typeOfResource | Text | en |
uws.peerReviewStatus | Unreviewed | en |
uws.scholarLevel | Graduate | en |