Relationship between soil phosphorus and runoff phosphorus losses from plot scale rainfall simulations on Manitoba soils
| dc.contributor.author | Rheault, Daniel | |
| dc.contributor.examiningcommittee | Akinremi, Wole (Soil Science) Goldsborough, Gordon (Biological Sciences) | en_US |
| dc.contributor.supervisor | Flaten, Don (Soil Science) | en_US |
| dc.date.accessioned | 2012-09-11T17:51:01Z | |
| dc.date.available | 2012-09-11T17:51:01Z | |
| dc.date.issued | 2012-09-11 | |
| dc.degree.discipline | Soil Science | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | Agricultural land is widely acknowledged as a primary non-point source of nutrients that affect the health of freshwater ecosystems throughout many parts of the world. Simulated rainfall-induced runoff trials were conducted at four P amended primary field sites under annual crop cultivation and three un-amended secondary field sites during the fall of 2009 and 2010. Highly significant (P <0.001) linear relationships were observed between measures of soil P and runoff TDP (r2 = 0.20–0.43). Olsen P was as accurate as other soil test methods for predicting runoff P losses. However, site, sampling year, runoff interval and crop residue management practices also affected these relationships. In particular, the predictability of these relationships on a site by site basis, as well as from one year to the next was extremely variable (r2 = 0.00-0.86), and declined significantly as the range of STP values decreased below approximately 80-100 mg P kg-1. | en_US |
| dc.description.note | October 2012 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/8765 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.subject | phosphorus | en_US |
| dc.subject | soils | en_US |
| dc.subject | water | en_US |
| dc.subject | quality | en_US |
| dc.title | Relationship between soil phosphorus and runoff phosphorus losses from plot scale rainfall simulations on Manitoba soils | en_US |
| dc.type | master thesis | en_US |
| local.subject.manitoba | yes | en_US |