Understanding Urease and Nitrification Inhibitors

The Ontario Certified Crop Advisor Association (CCA) and Ontario Soil and Crop Improvement Association (OSCIA) have partnered to deliver training and educational resources to Ontario agrologists. With a focus on cover crops, nitrogen management, and rotational grazing, these sessions will support the objectives of the On-Farm Climate Action Fund.

This webinar explores how urease and nitrification inhibitors can reduce nitrogen losses in agricultural systems and improve nitrogen use efficiency. Nitrogen is essential for crop growth, yet a significant portion of applied fertilizer is often lost through ammonia volatilization, nitrification, denitrification, and leaching. These losses reduce crop uptake, increase production costs, and contribute to environmental impacts such as nitrous oxide emissions and water contamination.

Dr. John Lauzon is an Associate Professor in the School of Environmental Sciences at the University of Guelph, specializing in soil fertility, nutrient management, and agroecosystem sustainability. His research focuses on nutrient cycling, manure management strategies that reduce environmental losses, and the spatial variability of soil nutrients and crop response. Known as an engaging and highly respected educator, he teaches soil science with a passion that consistently earns exceptional student feedback.

Funding for this project has been provided by Agriculture and Agri-Food Canada through the Agricultural Climate Solutions (ACS) – On-Farm Climate Action Fund (OFCAF). This event is free to attend. To register you must answer two questions for the purpose of tracking attendance and outreach.

CEUs: 1.0 Nutrient Management 

Understanding Urease and Nitrification Inhibitors is an OSCIA-recognized Knowledge Sharing Event (KSE) for applicants with On-Farm Climate Action Fund (OFCAF) projects in the Nitrogen Management category. The KSE is only available for the live webinar.