The Great Lakes and Maritimes Pest Monitoring Network (GLMPMN) is up and running for the 2023 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 […]
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. […]
Lots of reports are coming in of black cutworm and armyworm damage in Ontario. Black cutworm has been found feeding in numerous corn fields and even an alfalfa field. Locations that I know of so far include fields near: Parkhill, Watford, Embro (alfalfa field), Renfrew County, and parts of West Elgin. True armyworm has also […]
States to the south of us have been reporting intense black cutworm moth captures over the last few weeks. The continuous storm fronts that keep moving across Ontario could be carrying some of these moths to us. In addition, rain has kept us from getting into the fields to manage the annual weeds (especially chickweed) […]
I am still hearing from people who are looking for WBC egg masses on corn leaves. But unless they are scouting very late corn that is not in tassel yet, most of the WBC will already be larvae on the tassel or more likely in the ear. So focus on scouting the ears and tassels […]
I was sent a message today from Deb Campbell of Syngenta Seeds, that they are finding fall armyworm in corn in Grey, Perth, Oxford, Huron and Simcoe counties. Infestations are low and the larvae are small but it is something to keep an eye on. There could be fields with heavier infestations. Also, both Michigan […]
There have been a number of reports of heads being clipped in wheat. Some of it can be blamed on armyworm, but some cases (at least in Rodney) have been due to larvae known as grass sawflies. These larvae are green to green-yellow in colour with a yellow brown head. They look like caterpillars but […]
I have heard reports now from a few different locations of both wheat heads being clipped and leaf feeding taking place in corn in southwestern Ontario. This is a good sign that true armyworm is present. Both wheat and corn fields need to be scouted to determine if armyworm is present. Here is an article […]
