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


Year of initiation:2015
Year of completion:?
Map:

Interpretive Summary

2016

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.

2015

Traditional teaching on 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 dissolved P.


Updates & Reports

2015

Project Description


Project Leader

Ivan O'Halloran, University of Guelph


Project Cooperators

None


IPNI Staff

T. Bruulsema


Location

Americas \ Northern America \ CAN \ Ontario


Topics

4r place, 4r research fund, 4r time

Phosphorus (P)