This article was written by Tracey Baute, OMAFRA Field Crops Entomologist and originally posted on FieldCropNews.com Alfalfa weevil and potato leafhopper (PLH) are being reported as extremely high in many fields. Hot dry conditions have made it more favourable for these pests than their natural enemies (especially entomopathogenic fungi). Scout fields to determine if cutting is possible or if an insecticide application is necessary if thresholds are reached. Consider fields at threshold if both pests are present but populations are slightly below threshold for either pest. Monitoring recently cut fields is extremely important as well, as infestations can overwhelm the young regrowth. Dry bean growers should also keep watch of their newly emerging dry bean plants for PLH as seed…
