This is the right time of year to see adult alfalfa snout beetle (ASB) emerging and leaving the alfalfa/hay fields that they overwintered in and spent the last two years in. They can also be found feeding on clovers, dandelions, dogwood, wild carrot and strawberries. Alfalfa snout beetle adults can’t fly. So they are easy […]
The 2022 Great Lakes and Maritimes Pest Monitoring Network (GLMPMN) is up and running for the 2022 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 […]
Results from the 2021 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. Thank you to Dan Bihari, Senior GIS Specialist, […]
Scout vulnerable crops for feeding and larvae including winter canola, winter cereals, forages and cover crops. Especially in the southwestern counties but not limited to this area. Currently, there seems to be a pocket in the Blenheim area that requires attention. Meghan Moran has found three winter canola fields near Blenheim this week that have […]
Several 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 […]
Based 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 […]
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 […]
Western 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 […]
Written 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 […]
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 […]
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 […]
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 […]
Several 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 […]
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 […]
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 […]
