Changes in Soil Test Phosphorus and Phosphorus Forms with Continuous Phosphorus Fertilizer Addition to Contrasting Prairie Soils
| dc.contributor.author | Obikoya, Oluwatoyin | |
| dc.contributor.examiningcommittee | Cynthia, Grant (Agriculture and Agri-Food Canada) Don, Flaten (Soil Science) Yvonne, Lawley (Plant Science) | en_US |
| dc.contributor.supervisor | Wole, Akinremi (Soil Science) | en_US |
| dc.date.accessioned | 2016-09-14T00:23:50Z | |
| dc.date.available | 2016-09-14T00:23:50Z | |
| dc.date.issued | 2016 | |
| dc.degree.discipline | Soil Science | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | Application of phosphorus fertilizer can lead to changes in soil test P and increase both labile and non-labile phosphorus pools. Sequential fractionation showed that the labile (H2O-P and NaHCO3-P) fractions significantly (P < 0.05) increased with the addition of phosphorus fertilizer across all sites. Significant increase was observed in the non-labile (NaOH-P, HCl-P and Residual-P) fractions during the accumulation phase. During the depletion phase, when no further P was added, the accumulated P in the labile P fractions declined but not to the original level. The rates of P application, soil properties, soil test P methods used and time effect all had significant effects on soil test P changes in the extraction experiment. Mehlich-3 extracted the greatest amount of P from the two depths and Olsen-P was intermediate while the smallest amount was extracted with water. The pattern of the rate of change in extractable P with P addition for the 0 – 7.5 cm depth was not site dependent as the results obtained at the different sites were similar. | en_US |
| dc.description.note | October 2016 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/31736 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.subject | Soil test Phosphorus | en_US |
| dc.subject | Phosphorus forms | en_US |
| dc.subject | Phosphorus fertilizer | en_US |
| dc.subject | Sequential fractionation | en_US |
| dc.subject | Extraction | en_US |
| dc.title | Changes in Soil Test Phosphorus and Phosphorus Forms with Continuous Phosphorus Fertilizer Addition to Contrasting Prairie Soils | en_US |
| dc.type | master thesis | en_US |