Adapted from ONfloriculture by Sarah Jandricic, Greenhouse Floriculture IPM Specialist, OMAFRA
This article was originally written for the floriculture industry, but I have adapted it, with permission, as an awareness article for vegetable growers. — Janice
At this point, most field vegetable growers are focussed on getting the crops in and juggling early season field activities. If you’re thinking about caterpillars right now, it would probably be black cutworm. But recent alerts put out by the United States Department of Agriculture (USDA), bring a new emphasis to caterpillar control. Read on to understand what’s happening, and — for those with US customers — how to control occasional pests like cabbage looper, and avoid potential issues at the border.Continue reading Lassoing Loopers: why you NEED to care about caterpillar control→
By Travis Cranmer, Vegetable Crops Specialist
First appeared in ONvegetables in The Grower, April 2017.
Clubroot, caused by the soil-borne pathogen Plasmodiophora brassicae can cause yellowing, stunting, wilting and club-like roots on susceptible Brassica species including broccoli, cabbage, canola and cauliflower. Clubroot causes an estimated yield loss of 10-15% in Brassica crops worldwide and in severely infested fields a 30-100% yield loss can occur. There are different races of clubroot known as pathotypes and the resistance of many cultivars is pathotype dependent.
Jason Deveau, Application Technology Specialist, OMAFRA
Banding allows producers to save on chemical costs, reduce the potential for wasted spray and to make targeted applications, where they are most effective. Banding can be particularly useful in fungicide applications on small seedlings or transplants. For the mechanics (and mathematics) of banding, read more at sprayers101
Due to the development of resistance and concerns about efficacy, Tattoo C and Presidio have been removed from the 2016 strategy. These products may provide suppression under low risk conditions, however research results indicate that they are not sufficient controls under higher disease pressure.