Identification True armyworm (also known as common armyworm), when full grown, are 4 cm (1 1⁄2 in.) long. They can vary in colour from dull-green to brown or black. Two distinguishing features are orange stripes bordered by a thin white line running laterally along the body and dark horizontal bands at the top of each […]
Black cutworm (BCW) and true armyworm (TAW) moths have been making their way into Ontario over the last few weeks. Black cutworm in particular have been arriving since mid April in southwestern Ontario, with trap counts increasing weekly. Shout out to our new northern Ontario trap participants at the New Liskeard, Thunder Bay and Emo […]
True armyworm (TAW) larvae have been spotted in some winter wheat fields in Chatham Kent and Lambton County. This is in addition to cereal leaf beetle (CLB) larvae reaching threshold in some cereal fields, in some cases causing significant damage. So far reports of CLB reaching threshold have been from fields in the Sombra, Petrolia, […]
Cereal Leaf Beetle and True Armyworm Update Cereal leaf beetle (CLB), and true armyworm are common cereal pests in Ontario. To help support growers in their management of these pests and to better understand their prevalence, 28 fields across Ontario are being scouted weekly for cereal leaf beetle (CLB) and true armyworm (TAW). Crop growth […]
Cereal Leaf Beetle and True Armyworm Update Cereal leaf beetle (CLB), and true armyworm are common cereal pests in Ontario. To help support growers in their management of these pests and to better understand their prevalence, 28 fields across Ontario are being scouted weekly for cereal leaf beetle (CLB) and true armyworm (TAW). Crop growth […]
The Great Lakes and Maritimes Pest Monitoring Network (GLMPMN) website has been upgraded and has a new permanent link: https://experience.arcgis.com/experience/7164d23d488246d198dcf7a07d8c9021 Please bookmark this new link and use it going forward to enter any trap sites and trap data. The same link should work well for both desktop browsers and mobile devices. Everything is still the […]
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, […]
Calling 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 […]
Wheat Pests are Still a Concern True armyworm (TAW) larvae are in many winter wheat and spring cereal fields across southern Ontario, thankfully not always at threshold. Some fields have populations at threshold (4-5 unparasitized larvae smaller than 2.5 cm per square foot) or above and with minimal feeding damage. Larvae sometimes choose not to […]
This was the last breakfast meeting for the Exeter and Mt Forest group. Thank you to everyone who has participated this season, and for adapting to the new Zoom format. Corn Crop advisors are getting a lot of questions right now about leaf wrapping and yellow flash on corn leaves. While this may look similar […]
This article was written by Tracey Baute, Entomologist- Field Crops and Joanna Follings, Cereals Specialist As we continue to scout our cereal crops, reports of cereal leaf beetle and true armyworm in fields are coming in. While most fields are not being found at threshold yet, it is important to monitor your fields and be […]
Armyworm has been spotted at low levels in a few winter wheat fields, though being so close to harvest, it is really not a concern in that crop. However, it does indicate a need to keep an eye out for them in spring cereals, as well as mixed forages (as they like to feed on […]
True armyworm have been found in a few fields this weekend. Cereals, corn (especially, though not exclusive those fields planted into rye) and mixed forages are at risk and should be scouted every three or four days over the next three weeks. True armyworm identification was covered in a previous blog this spring (here). Scouting […]
Two more pests deserve our attention over the next month. Cereal leaf beetle (CLB) is starting to show up in some fields in Ontario. Levels are still low but both adults, eggs and/or larvae are being found by scouts at various locations during routine scouting trips. A few locations tend to experience a higher frequency […]
It’s been quite a week and it’s only Tuesday. Many of you are calling about one of these pest issues so hopefully I can help answer all of your questions here. Grass Sawfly in Wheat: Once you start to see sawfly feeding (see previous blog for pics and details) the feeding damage is nearly done. […]