Executive Summary: Key Legal and Evidentiary Issues

• Minister's authority under subsection 15(3) of the Plant Protection Act was central to the appeal.

• Appellant argued there was insufficient evidence to reasonably suspect potato wart was present across all of PEI.

• Court upheld a broad interpretation of "infested place," allowing a whole province to be declared infested.

• Evidence of transmission pathways and limitations in detection methods justified Minister's suspicion.

• Minister’s consideration of international trade impacts did not render the decision improper.

• Appeal was dismissed; costs were awarded against the Appellant.

Facts and outcome of the case

Background of the dispute

This case involves a dispute between the Prince Edward Island Potato Board (the Appellant) and two federal government entities—the Minister of Agriculture and Agri-Food and the Canadian Food Inspection Agency (CFIA)—over a Ministerial Order that declared all of Prince Edward Island (PEI) as "a place infested with potato wart" under subsection 15(3) of the Plant Protection Act. The declaration effectively prohibited the movement of seed potatoes from PEI without prior written authorization. The Order followed detections of the potato wart pathogen (Synchytrium endobioticum) in both regulated and unregulated fields in PEI, including a significant 2021 finding in Category D fields previously believed to pose low risk.

Legal challenge and procedural history

The Potato Board challenged the validity of the Ministerial Order through judicial review in the Federal Court. They argued that the Order was unreasonable for two main reasons: first, that there was insufficient evidence to justify the classification of the entire province as "infested," and second, that the Minister had issued the Order due to pressure from U.S. trade partners, thereby acting for an improper purpose. The Federal Court rejected the challenge and upheld the Order, prompting the Board to appeal to the Federal Court of Appeal.

Issues on appeal

At the appellate level, the central issues remained whether the Minister had a reasonable basis, grounded in evidence, to classify PEI as infested, and whether trade-related concerns improperly influenced her decision. The case also turned on the interpretation of “infested” within the meaning of the Act and Regulations, and whether the Order could apply to such a broad area as an entire province.

Reasoning of the Federal Court of Appeal

The Federal Court of Appeal upheld the lower court’s ruling. The Court found that the Minister’s decision was reasonable, given the documented spread of potato wart in all three counties of PEI, the recognized limitations of current detection methods (particularly for sub-detectable spore populations), and the credible scientific concern over human-mediated spread from Category D fields to unregulated fields. The statutory definition of "infested" was interpreted to allow for such a designation even where presence is suspected rather than proven. Furthermore, the Court determined that while economic and trade considerations influenced the decision, they were permissible within the discretionary scope of the Act, whose purpose includes protecting Canada's agricultural sector.

Outcome

The appeal was dismissed. The Ministerial Order remained valid, and the Prince Edward Island Potato Board was ordered to pay legal costs to the Respondents. No damages were awarded, as the proceeding was a judicial review focused on administrative action, not compensation.