Mr. Speaker, the fertilizer target was developed based on scientific literature and internal analysis that points to the potential for optimizing nitrogen fertilizer use with an accompanying reduction in greenhouse gas emissions, while maintaining or increasing yield. The reduction percentage of 30% was the result of an iterative process weighing various factors and characteristics, such as whether it was ambitious in considering climate goals and international efforts, whether it was technically achievable because technologies and know-how largely exist, whether it was economically feasible as a result of potential cost savings and increased yield through efficiency gains and better management, and whether it was scientifically defensible as supported by research findings relevant to Canadian context.
In the House of Commons on January 31st, 2022. See this statement in context.