Observing insects in Manitoba in 2017
By John Gavloski Entomologist Manitoba Agriculture
Flea beetles (Phyllotreta spp.) in canola and cutworms continued to be at economical levels in many areas of Manitoba in 2017. Aphids were at high levels and resulted in insecticide applications in small grain cereals, field peas and soybeans.
Diamondback moth (Plutella xylostella) were controlled in many canola fields. Bertha armyworm (Mamestra configurata) got to economic levels in some canola fields in Western Manitoba. Alfalfa weevil (Hypera postica) was at high levels in many alfalfa fields. Thistle caterpillars (Vanessa cardui) caused concern in some soybean and sunflower fields.