Ivan O’Halloran

Associate Professor Ontario Agricultural College Ridgetown Campus Guelph, Ontario iohallor@uoguelph.ca Office: (519) 674-1500 ext. 63635

Bio/Research

The focus of my research is primarily in the area of soil fertility management and land stewardship. Specific research interests include spatial variability of soil properties and crop yields, the site-specific application of nutrients and their fate (e.g. impact of variable nitrogen fertilizatio...

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Bio/Research

The focus of my research is primarily in the area of soil fertility management and land stewardship. Specific research interests include spatial variability of soil properties and crop yields, the site-specific application of nutrients and their fate (e.g. impact of variable nitrogen fertilization on nitrous oxide emissions), management practices to improve crop utilization of nutrients applied in animal manures while reducing off-site losses of manure constituents, methods of assessing manure phosphorus bioavailability and impact of manure phosphorus applications on phosphorus sorption/desorption in soils. Recent or current projects include:

Impact of animal manure type and fertilizer phosphorous on soil phosphorus cycling in an Ontario soil

Effect of tillage and timing of liquid manure application on the transport of N, P and bacteria to surface and subsurface waters

Determination of some key factors for Ontario's soil P index and effectiveness of manure applications practices for mitigating risk to water resources


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Lori Bona Hunt
l.hunt@exec.uoguelph.ca
519-824-4120 ext. 53338