Tracey Baute March 23, 2021 325 Comments Off on 2021 Great Lakes and Maritimes Pest Monitoring NetworkThe 2021 Great Lakes and Maritimes Pest Monitoring Network (GLMPMN) is up and running for the 2021 season. We are monitoring for black cutworm (BCW), corn earworm (CEW), European corn borer (ECB), fall armyworm (FAW), true armyworm (TAW) and western bean cutworm (WBC) across the region and are providing an interactive real-time map and trap data dashboard that summarizes the…
Tracey Baute March 23, 2021 297 Comments Off on GLMPMN 2021 Trap Set Up Instructions and Trap Supply NeedsCalling all GLMPMN Trap Participants! Please find below the instructions on how to set up a trap in your field and where to get the trap supplies for reach pest that you are monitoring. Not, each pest requires a specific trap type and lures as indicated in each of the instructions below. Once you have set up your traps, you…
Rootworm Biology and Impact Corn rootworm (CRW) is a serious pest of continuous corn in Ontario. CRW larvae are the main concern, as they clip roots and inhibit root growth, resulting in poor nutrient and water uptake in the plant. Significant yield loss occurs before these symptoms are even noticed. For every node of roots clipped, there is a…
Tracey Baute March 9, 2021 300 Comments Off on Summer Job Opportunity – Field Research Assistants Needed in RidgetownOrganization: Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) Division/Branch: Economic Development Division / Agriculture Development Branch Position Title: Field Research Assistant (Field Crop); Field Research Assistant (Horticultural Crop) Job Term: Temporary, for up to 14 weeks, beginning spring 2021 Salary: …
Tracey Baute February 10, 2021 299 Comments Off on UGRC Field Crop Pest Management – 2021 Summer Research Assistants NeededDr. Jocelyn Smith at the University of Guelph Ridgetown Campus is seeking Summer Research Assistants to assist the Field Crop Pest Management program. Projects will include corn, cereals, soybean and canola pest management, and insect resistance management studies. Skills in plant and pest identification, scouting and monitoring techniques, measurements of agronomic performance and data collection will be enhanced. The candidates…
Tracey Baute October 26, 2020 1179 Comments Off on Understanding the Impact and Measures Needed to Address Bt Resistant RootwormWhy be concerned about the Bt resistant rootworm populations showing up in Ontario? Dr. Jocelyn Smith, University of Guelph Ridgetown Campus stands in a field that has cross resistant rootworm. The grower experienced more than 50% yield loss in this 2nd year silage corn field planted with a pyramid hybrid in 2020. Jocelyn discusses the impacts of these resistant rootworm…
Tracey Baute October 9, 2020 1346 Comments Off on Mitigation Measures for Bt Resistant Corn RootwormExtensive injury by corn rootworm (CRW) to pyramid Bt rootworm (Bt-RW) hybrids was observed in several Ontario counties in 2020, suggesting that CRW populations have developed resistance to multiple Bt-RW proteins. The Canadian Corn Pest Coalition (CCPC) and OMAFRA have developed mitigation recommendations for continuous corn producers, in hopes of knocking back the resistant corn rootworm population present in Ontario….
Tracey Baute October 9, 2020 793 Comments Off on Revised October 2020 – Canadian Bt Corn Trait Tables with Events and Resistance StatusWe have revised the Canadian Bt Corn Trait Tables to reflect the current potential cross resistance of corn rootworm in Ontario to all Bt-RW proteins. Here are the latest versions: English: Bt Corn Trait Table (October 2020) with Events and Resistance Status French: Tableau des caractères Bt (Octobre 2020-Français) – Évènements transgéniques et résistances For information on which hybrids or products have…
Tracey Baute August 20, 2020 934 Comments Off on Scouting Guidelines to Determine Possible Rootworm ResistanceScouting for corn rootworm injury is important to detect potential resistance to rootworm Bt traits and to plan management options for the next growing season. It is especially important to report any fields showing signs of suspected resistance to your corn agronomist and the provincial entomologist. Rootworm larvae feed below ground on corn roots from late May until late July….
Canadian Corn Pest Coalition News Release: Corn rootworm (CRW) has historically been one of the most important pests of corn in Canada and can cause extreme economic loss and increased management costs. High CRW pressure in Ontario in 2020 is challenging current Bt corn rootworm hybrids and several growers of Bt rootworm hybrids are reporting unexpected injury by CRW to…
Reports have been coming in about pod feeding from bean leaf beetle (BLB) in IP, food grade and seed soybeans. Pod damage on crush beans typically does not warrant control. Foliar feeding (defoliation) is rarely the concern this time of year. But BLB can feed on the surface of the pod which exposes the seed inside to pod diseases that…
Here is the latest update on where the trap catches are for western bean cutworm in the region based on trap site data entered into the Great Lakes and Maritimes Pest Monitoring Network. Peak flight for Ontario and most other states and provinces on the network (except Michigan) occurred during Week 11 (Aug 3-9) (see Fig. 1). Trap catches are…
Before I talked about the WBC trap data, I want to thank everyone who set up a trap this year and are entering their data into the network. Despite COVID-19, there are more than 1000 WBC traps in the system! That is a record and helps us figure out what the flight patterns are. Now for the trap results. We…
Tracey Baute July 28, 2020 619 Comments Off on Seeing Lots of Rootworm Adults in Rootworm Bt Fields? Let Us Know!Corn rootworm adults emerged a few weeks earlier than usually and are quite abundant this year. This is particularly concerning when the adult populations are high in corn on corn fields planted with a rootworm Bt hybrid. This could be an indication that rootworm populations have developed resistance to the rootworm Bt traits involved. To know for sure if your…
Many reports are coming in about silk clipping in corn. Three main culprits include corn rootworm beetles, Japanese beetles and redheaded flea beetles. Regardless of which one is doing it, it comes down to when and where they are clipping and by how much. Corn silks can grow as much as an inch or more a day, though most of…