When possible, light bulbs emitting yellow light are preferable to others as insects do not see yellow light as well as other colors. Nocturnal moths like these are attracted to light, therefore minimizing the amount of light around homes will draw in fewer moths. Plants that provide shelter for these moths include cotoneaster shrubs, spruce, and pine trees. Plants frequently visited by miller moths for food include cherries, lilac, cotoneaster, horsechestnut, raspberry, Russian olive, and spirea. "Later-planted sweet corn could be at an even higher risk if it is pre-tassel while the rest of the field corn crop is beyond that stage," Tracey Baute, a provincial field crops entomologist in Guelph, said in the company’s release.Ĭoragen - which has DuPont’s proprietary Group 28 product Rynaxypyr as its active ingredient - is also billed as effective against other key insects in corn such as European corn borer and corn earworm, and as “easy on beneficial insects” such as honeybees.These moths are susceptible to few insecticides, and those that are killed will quickly be replaced by new moths as they continue migrating west to higher altitudes.Ĭertain landscapes provide more nectar and shelter for miller moths than others, which means they will naturally be more attracted to the area. This year's later-planted crop may not tassel before WBC moths start laying eggs, the company said, adding that given the choice, the cutworm’s moths also tend to lay eggs in shorter corn. The cutworm’s moths generally don't like to lay eggs in corn that has already tasseled, DuPont’s Mississauga-based Canadian arm said in its release. "The registration for WBC comes just in time as this year's late spring could make the corn crop more susceptible to WBC."
A relatively new insecticide has been cleared for use against a “relatively new” pest in Ontario corn crops.ĭuPont on Thursday announced it’s picked up federal approval for use of its diamide insecticide Coragen against western bean cutworm (WBC) in field, seed and sweet corn crops.ĭuPont senior sales rep Sylvain Legault, who in a release Thursday described the worm as “relatively new” to Ontario, said damage the pest caused last year in some pockets in the province was “quite extensive.
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