Impact of Degree of Fertilizer and Manure Incorporation and Timing of First Runoff Event on Phosphorus Losses to Surface Runoff
IPNI-2015-CAN-4RC11
Description of Activity and Deliverables: This activity is one of two in the 4R Nutrient Stewardship Research Network that examines placement and timing of P addition on mitigating runoff P losses. This activity will be carried out in south western Ontario where a P loss from agricultural runoff to Lakes Erie and Ontario needs to be reduced. Read more
Interpretive Summary
Recent observations in the Great Lakes watershed suggest that losses of dissolved forms of phosphorus (P) from agricultural land are increasing. Combined trends in tillage practices, along with timing and placement of fertilizer and manure, may drive this increase in loss of soluble P. This project aims to assess the effect of timing and placement on losses of dissolved and particulate forms of P.
Traditional teaching on phosphorus (P) behavior in soil emphasized its retention, and therefore conservation programs to reduce P loss from agricultural soils focused on reducing soil erosion. More recent observations in the Great Lakes watershed suggest that losses of dissolved forms of P are increasing. Combined trends in tillage practices, along with timing and placement of fertilizer and manure, may drive this increase in loss of soluble P.
Updates & Reports
| 2015 | Project Description |
Project Leader
Ivan O'Halloran, University of Guelph
Project Cooperators
None
IPNI Staff
Location
Americas \ Northern America \ CAN \ Ontario