Dr. Ivan O Halloran

Associate Professor

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Biography

Ivan O’Halloran is an Associate Professor in the School of Environmental Sciences at the University of Guelph, located at the Ridgetown Campus. His research concentrates on soil fertility management and land stewardship within agricultural systems. His specific research interests encompass spatial variability of soil properties, crop yields, and site-specific application of nutrients. He studies the fate of nutrients, including the impact of variable nitrogen fertilization on nitrous oxide emissions, and explores management practices aimed at enhancing crop utilization of nutrients applied in animal manures while reducing off-site losses. Additionally, he assesses techniques for determining manure phosphorus bioavailability and the impact of manure phosphorus applications on soil. Ivan's work significantly contributes to understanding and improving nutrient management strategies for sustainable agriculture.

Research Interests

Requirements for University of Guelph

Master Program
Requirements
GPA Requirement
Required:3
IELTS
Listening
Required:6
Reading
Required:6
Writing
Required:6
Speaking
Required:6
Overall
Required:6.5
TOEFL
Listening
Required:21
Reading
Required:21
Writing
Required:21
Speaking
Required:21
Total
Required:89
Prerequisites
Honours baccalaureate degree in a relevant field or DVM degree Identify a potential faculty advisor
Application Checklist
  • Online application
  • Official transcripts
  • Two academic reference assessments
  • Statement of interest
  • English language proficiency test results (if applicable)
Specialization Notes

Department of Clinical Studies. Offers MSc by thesis (2 years) and MSc by coursework (1 year).