Two-spotted spider mites have emerged as the primary insect concern for Manitoba soybean producers this season, with infestations concentrated in eastern and Interlake regions where hot, dry conditions have favoured the pest.
Spider mite issues have been geographically limited but significant where they occur.
The two-spotted spider mite is a sporadic pest that typically appears from July to August when weather conditions are favourable.
The tiny pests prefer hot, dry weather and infestations usually begin at field edges before moving inward.
Recent weather patterns have created ideal conditions for spider mite development.
Spider mites can be challenging to detect early.
While white speckling may appear on upper leaf surfaces, the actual mites are found on the undersides of leaves among their webbing, according to the Manitoba Pulse & Soybean Growers’ website.
