Watch for Stink Bugs in Saskatchewan Crops

As the season progresses in Saskatchewan, growers should stay alert for stink bugs. These pests are becoming more common in Western Canada, especially in warm, dry years.

Adult stink bugs are shield-shaped and emit a strong odor when disturbed. Their lifecycle includes eggs laid on plant stems or leaves, followed by several active nymph stages before maturing into adults. Both nymphs and adults use piercing-sucking mouthparts to feed on crops, particularly pulses and oilseeds. Feeding can cause deformed pods, shriveled seeds, and reduced quality and yield. Damaged areas may also become entry points for disease.

Currently, there is no established economic threshold for stink bugs in Saskatchewan. However, in other regions, thresholds can range from 1–3 bugs per sweep or around 5% pod damage, depending on crop type and value. Regular scouting is critical — focus on field edges and flowering to pod-filling stages, and consult your agronomist before making treatment decisions.