Tracey Baute August 30, 2021 881 Comments Off on Fall Armyworm Alert – Forages, Corn, Cereals and Others at RiskSeveral reports of fields with fall armyworm (FAW) larvae have been coming in over the last few days. Growers or scouts drive by a field and pull over, shocked to see only stems left of plants with larvae happily feeding. So far most of the damage has been found in oats, rye cover crop, mixed forages and newly seeded cereals….
Tracey Baute August 4, 2021 282 Comments Off on Western Bean Cutworm Trap Catch Results as of Aug 3rdBased on WBC trap counts, peak flight likely took place over the last 7 days. Though we never know for sure until a week later when moth catches really dropped. That said, comparing this year to previous years, it lands in the same week we have experienced peak flight since 2018 (Figure 1). Peak flight means that during that period,…
Add stink bugs to the long list of pests showing up to represent in 2021. There have been several reports of brown stink bug being found in IP soys and dry beans. Stink bugs feed by piercing the pods and sucking on the seeds developing inside. They inject digestive enzymes into seeds, causing the seed to dimple or shrivel. Indirect…
Tracey Baute July 20, 2021 436 Comments Off on Western Bean Cutworm Catches Increasing But Still Low Compared to Past YearsWestern bean cutworm traps catches are starting to increase but are still low compared to previous years with more weeks of moth flight (and egg laying) to come. Those finding eggs in early tassel stage need to wait before spraying since eggs are still going to be laid for another few weeks. It is better to time applications when the…
Tracey Baute July 9, 2021 393 Comments Off on Monitor and Report Spider Mite Resistance in Ontario Soybean and Dry Bean CropsWritten by: Tracey Baute, Field Crop Entomologist, OMAFRA, Dr. Vojislava Grbic, Associate Professor, Western University and Dr. Ian Scott, Research Scientist, AAFC-London With the exception of the significant rain events in the last week, this year’s hot, dry conditions and early wheat harvest could be priming us for another bad spider mite season in soybeans and dry beans. Over the…
If you haven’t done so already, it is time to put up western bean cutworm traps to monitor for moth activity. The GLMPMN usually has more WBC traps up and reporting by now to help us understand when adults are active and likely laying eggs in corn or dry beans across Ontario. From the 100 or so traps up in…
Soybean aphids (SBA) have been reported in a few early planted soybean fields. But that doesn’t mean we need to panic. It has been a few years since we have had major aphid issues so it is good to review what the best management practices are. Especially given one of the main reasons we no longer deal with soybean aphids…
Tracey Baute June 9, 2021 610 Comments Off on Nationwide monitoring pilot project for European corn borerThe European corn borer (ECB; Ostrinia nubilalis), has been an important pest of corn and other crops in eastern Canada for nearly a century now but is also known to be a sporadic pest in western Canada. Despite its name, ECB is actually a generalist feeder, having a wide range of hosts. Although corn is one of its preferred hosts,…
Alfalfa weevil and potato leafhopper (PLH) are being reported as extremely high in many fields. Hot dry conditions have made it more favourable for these pests than their natural enemies (especially entomopathogenic fungi). Scout fields to determine if cutting is possible or if an insecticide application is necessary if thresholds are reached. Consider fields at threshold if both pests are…
Tracey Baute May 27, 2021 1030 Comments Off on Introducing the New Adult Corn Rootworm Trap Network – Trap Participants NeededSeveral US states and Canadian provinces are joining forces to monitor for adult corn rootworm (CRW) beetles this year. Though some US states have been monitoring adult rootworm beetles using sticky traps for several years now, trapping for CRW is relatively new for Ontario. Weekly trap data for all trap sites involved will be collected and mapped in real-time by…
We are gathering cereal leaf beetle (CLB) data again this year to help validate growing degree day models generated by AAFC-Saskatchewan. If you are out scouting cereal fields this growing season and come across CLB, we want you to let us know where you are finding this pest, what stage and how many you are finding. To enter your field…
The Canadian Bt Corn Trait Tables have been updated for April 2021. English: Canadian Bt Corn Trait Table for April 2021 French: Maïs Bt disponibles au Canada (Avril 2021) For information on which hybrids or products have obtained EU approval, visit the Canadian Seed Trade Association’s corn hybrid database at: https://seedinnovation.ca/hybrid/ Pour plus d’informations sur les hybrides ou produits ayant obtenus l’approbation…
Tracey Baute March 23, 2021 1730 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 1224 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…