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Colorado Potato Beetle

Dip Test Protocol to Determine Neonicotinoid Insecticide Resistance

An important factor in managing insecticide resistance is to know the effectiveness of the product which is going to be applied. This can be accomplished by using dip tests, a simple technique in which adults or larvae are immersed for a few seconds in insecticide solutions. The mortality rate determined for each insecticide indicates the products which are likely to be most effective under field conditions. Dip Test Items Although dip test…

Black cutworm

Monitoring the Black Cutworm

Life Stages: Adult Moths – Eggs – Larvae – Pupa – Adult Moths First Generation: May – June Adult moths do not overwinter in Ontario but are blown up from the south on storm fronts. Consequently, black cutworm infestations are unpredictable. Damage varies from field to field and from year to year. This insect can cause considerable economic losses if not detected, so scouting is essential. The adults are grey moths with…

Colorado Potato Beetle

Survival of the Fittest

As insecticide resistance grows within the Colorado Potato Beetle population, you may be wondering how is this happening? It only takes a few survivors to make something spread — which is how insecticide resistance is growing throughout the Colorado Potato Beetle (CPB) population. “Resistance really is survival of the fittest,” Ian MacRae, an extension entomologist at the University of Minnesota, told the audience at the Ontario Potato Conference in Guelph, Ont. in…

Colorado potato beetle

Bayer Launches New Insecticide for Colorado Potato Beetle Protection

Bayer has recently registered the active ingredient, tetraniliprole, which will be launched commercially in the registered end use product vayego®insecticide, the chemical company announced in a news release on May 6. Vayego will provide potato growers with protection against Colorado potato beetles, potato flea beetles and European corn bore. “When applied as a foliar spray, vayego provides extended residual on Colorado Potato Beetles, giving growers confidence that their potatoes will have additional protection,”…

Black Cutworm Alert for Late-Planted Fields in Ontario

Yesterday, I checked a variety trial near Alliston that was planted late, on May 27. There was a moderate to high population of small black cutworms in the plots of late varieties, those that still had green foliage. Although the worms were small, there were also tubers with feeding damage. Small larvae of the black cutworm feed on the foliage in the evenings and remain buried in the soil near the plants…

Digging of the Fresh-Market Crop Has Begun Near Leamington, Ont.

Things looked very different across the province from July 22 to 26 depending on the area.  Digging of the fresh-market crop has started near Leamington, Ont. Quality and size look good. Growers are digging the earliest planted fields in the Simcoe-Delhi region, but the area is dry. “Harvest has started for us and the crop looks good. We need some rain because harvesting and irrigating are not a great combination,” said Joe Lach,…

Scientists Discover Key Plant Virus-Insect Virus Interaction

By Aaron J. Bouchie Aphids and the plant viruses they transmit cause billions of dollars in crop damage around the world every year. A Cornell-led research team is examining the relationship at the molecular level, which could lead to new methods for controlling the pests. A group led by Michelle Heck, research molecular biologist at the USDA Agricultural Research Service (USDA-ARS) and Boyce Thompson Institute, used recently developed small RNA sequencing techniques to better…

New Tools for the CPB Toolbox

A study being conducted by researchers at Agriculture and Agri-Food Canada’s London Research and Development Centre could soon provide Canadian potato growers with new insight on how to fight one of the industry’s most troublesome pests — the Colorado potato beetle. The five-year study is officially known as the Development of Regional Management Strategies and Decision-Making Tools for Control of the Colorado Potato Beetle. Work on the project began this past summer…

Researchers Go Toe-to-Toe with PCN

Although extremely rare in Canada, potato cyst nematodes (PCN) are such a serious risk to potato production and trade that the Canadian Food Inspection Agency (CFIA) has strict surveillance and quarantine protocols. When PCN was discovered in Quebec in 2006, the CFIA immediately implemented quarantine measures for the affected fields. As well, the agency took other important steps, including working with Agriculture and Agri-Food Canada (AAFC) and other stakeholders to identify research…

New Prospect for Wireworm Control

A few years ago, Todd Kabaluk was given some fuzzy wireworms. That might not sound like an auspicious gift, but Kabaluk is a research biologist in integrated pest management with Agriculture and Agri-Food Canada (AAFC). He was immediately interested. As it turned out, these fuzzy wireworms were the first step on the path toward a new possibility for controlling wireworms. Wireworms are the tough-to-control, soil-dwelling larvae of click beetles. AAFC has found…

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