Manitoba Agriculture has released its weekly Insect and Disease Update.
• Diamondback moths are being controlled in some canola fields in eastern Manitoba. Fields near Winkler, Morris, Altona, and Rosenort have been treated.
• Soybean aphids have been found in southern Manitoba, but only in low numbers. So far levels are quite low; only the occasional one noticed after lots of scouting. Soybean fields should be scouted for soybean aphids, and levels monitored.
• Lygus bug levels should be checked in fields of confection sunflowers. High levels have been reported in the MacGregor area. Lygus bugs have many hosts, so levels in sunflowers may partially depend on the stages of some of these alternate hosts in the area, the stage of lygus in their life cycle, and whether they have incentive to search for alternate hosts because of overlymature or harvested crops.
Click here for the full report.