A few pests are starting to show up in fields. If you haven’t had a chance to take a look yet, plan to check those high risk fields that are prone to seeing soybean aphids (soybeans) or western bean cutworm (corn and dry beans) in the next week or so. Soybean aphids: Soybean aphids are […]
We should be seeing adult rootworm activity very soon so it is the perfect time to put up any CRW sticky traps. If you are new to the CRW Trap Network, Welcome! If you are returning from previous years, there are some new features you should be aware of. Trap Set Up in Field: Corn […]
True armyworm (TAW) has been spotted at near threshold levels in a winter wheat field near Niagara and has also caused significant damage in late planted seedling corn in Chatham Kent. Though most of our YEN wheat sites being scouted weekly have picked up only low levels of TAW in a few of the sites, […]
Ontario needs corn rootworm trap participants, whether you’ve monitored traps in the past few years or not. Fields with a history of corn on corn are the preferred target. Any participants from last year are encouraged to use some of the same fields as last year, even if they rotated out of corn. This will help […]
Last week, we announced that a population of European corn borer (ECB) likely resistant to Cry1Ab was found in Nova Scotia last fall. In case you missed it, here is that announcement: Suspected Cry1Ab Resistant European Corn Borer Found in Nova Scotia. This finding is concerning, as the ECB populations in the area were previously […]
Canadian Corn Pest Coalition News Release April 27, 2023 In the fall of 2022, a European corn borer (ECB) population was collected near Truro, Nova Scotia near a field where a Cry1F-resistant ECB population was collected in 2018. Based on bioassay tests conducted by Drs. Jocelyn Smith and Yasmin Farhan at the University of Guelph, […]
The Canadian Bt Corn Trait Tables have been updated for March 2023. These tables include all registered Bt Corn Trait Packages and indicates which Bt proteins and herbicide tolerant traits they contain and pests they target. These tables also include known resistance status for each pest and Bt protein. English: Canadian Bt Corn Trait Table […]
Some popular insecticides won’t be available for use in field crops in Ontario in 2023. All products containing lambda-cyhalothrin including Matador, Warrior, Silencer, Labamba, Voliam Xpress and Endigo will be limited for use to only horticulture crops in eastern Canada this year. The Pest Management Regulatory Agency (PMRA) re-evaluated lambda-cyhalothrin and end use products in […]
Results from the 2022 Ontario trap sites participating in the Adult Corn Rootworm (CRW) Trap Monitoring Network have been summarized in the infographic below. A more detailed report for all trap sites across North America was prepared by Ashley Dean and Erin Hodgson at Iowa State University and myself at: 2022 Regional Corn Rootworm Monitoring […]
Traps south of London and in Essex County have had very high captures of fall armyworm. Winter canola, winter cereals, forages and cover crops should be monitored for larvae – not just limited to the region of these traps. Some fields of newly-seeded winter canola had extensive feeding damage in 2021 and had to be […]
co-authored by: Meghan Moran Western bean cutworm can significantly reduce the quality and yield of your dry bean crop. Below are best practices for minimizing this insect’s impact to your bottom line. The simple answer Spraying insecticide for western bean cutworm (WBC) control in Ontario dry bean fields is warranted only if ALL of the […]
Western bean cutworm (WBC) trap counts are starting to ramp up quickly, with a few traps catching around 200-300 moths this week. Fewer trap sites are reporting to the GLMPMN, but from the ones that are, moth activity is increasing in southern counties (Chatham-Kent to Haldimand-Norfolk to Huron, as well as Prince Edward County (Fig. […]
Some areas saw a bit or a lot of rain this past week but likely not enough yet to reduce our risk of spider mites in soybeans and dry beans. What is very concerning is that samples collected last year from 10 fields in southern Ontario all were resistant to dimethoate (Lagon or Cygon). The […]
With some soybean fields in early flowering, it is time to scout fields for soybean aphids. Early planted fields tend to be the first to be colonized. The mom aphids start depositing nymphs in pockets in the field that start to build populations of up to 1000s per plant. Once these pockets of aphids get […]
As corn approached VT stage, it is the ideal time to start putting up the corn rootworm sticky traps. We are asking everyone participating this year to monitor and change traps weekly, on approximately 7 day intervals, so that we can properly calculate the # of beetles per trap per day. It will also help […]