Swede midge (Contarinia nasturtii) is a significant pest of spring canola in Ontario. Enzymes in the saliva of larvae break down plant tissue, resulting in swollen and distorted leaves, shoots and flower buds and can potentially prevent bolting. Swede midge can reproduce and cause injury in winter canola but because winter canola typically bolts and … Continue reading Swede Midge on Spring Canola […]
