Information for commercial vegetable production in Ontario
Scout Training workshops offered by OMAFRA for the 2019 field season Continue Reading OMAFRA IPM SCOUT TRAINING WORKSHOPS FOR 2019
The onion maggot (Delia antiqua) is the larvae stage of the onion maggot fly which can cause severe damage to… Continue Reading Can Onion Maggot be managed without insecticides?
Leek moth (Acrolepiopsis assectella) has spread throughout Southwestern Ontario and has been identified as far west as
Swede midge (SM; Contarinia nasturtil) is an invasive, gall-forming dipteran pest that was first identified in Canada on an Ontario… Continue Reading Swede midge is often mistaken for bacterial rot in Brassicas
Allium leaf miner (Phytomyza gymnostoma) an invasive pest of European origin, has recently been identified in several US states including
Leek moth (Acrolepiopsis assectella) is an invasive pest of European and Asian origin. The first North American detection occurred near… Continue Reading Tracking the march of leek moth in Ontario
Downy mildew of brassicas (Hyaloperonospora parasitica syn. Peronospora parasitica) is a fungal-like oomycete that can be devastating in cooler, wet… Continue Reading Downy mildew of brassica vegetables
We are currently conducting a clubroot survey for Brassica vegetables in Southwestern Ontario. To date we have identified or collected… Continue Reading Update on the Clubroot of Brassica Survey
Onion thrips (Thrips tabaci) feed on more than just onions; they also feed on cabbage, leaf lettuce, a variety of… Continue Reading Scouting for onion thrips
Stemphylium leaf blight (Stemphylium vesicarium) of onion starts as yellow-tan, water-soaked lesions developing into elongated spots. As these spots cover… Continue Reading Stemphylium is the new Botrytis