Flower fly (Syrphidae) larvae predating cannabis aphids (Phorodon cannabis), a difficult-to-manage pest of this *high* value crop. Predacious flower fly larvae offer an alternative biological control option to pesticide use.

Flower fly (Syrphidae) larvae predating cannabis aphids (Phorodon cannabis), a difficult-to-manage pest of this *high* value crop. Predacious flower fly larvae offer an alternative biological control option to pesticide use.
The Office of Research oversees a $186 million research enterprise across seven colleges, our regional campus at Ridgetown, 15 research centres, and the University of Guelph/Ontario Ministry of Agriculture, Food and Rural Affairs Agreement. We are committed to supporting the research programs of University of Guelph faculty across all disciplines.
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