It's time to get out and scout for WBC damage in dry beans. Based on trap counts we are now confident that some counties experienced peak flight the last week of July and others the first week of August. Though I will admit that some trap sites are still catching lots of moths, especially the be... Continue reading
It has been a few years for some since they have had to worry about soybean aphids, let alone make a spray decision. So I want to cover off the key points you need to know through some of the repeat questions that have been coming in. Anyone with more questions after reading this, please ask in ... Continue reading
I am getting a lot of emails with photos from keen reps who think they have found Brown Marmorated Stink Bugs (BMSB). I think it is awesome that everyone is taking this pest seriously and keeping an eye out for it in the fields but they are quickly learning that there are many other stink bugs tha... Continue reading
The 2011 season is clearly not like 2010. We are not seeing a province wide WBC peak flight like last year. Based on the trap counts that came in this week, it appears that some counties experienced peak moth flight last week (August 1st to 7th) while other counties are still going strong and ma... Continue reading
Not surprisingly, smaller weeds are easier to control. The assumption when using a glyphosate based herbicide is that when weeds get bigger, no worries, just add more glyphosate. A recent research trial conducted by Dr. Peter Sikkema (Ridgetown Campus, University of Guelph) would suggest otherwise.
... Continue reading
The classic explanation of "too hot, too cold, too wet, too dry, too bad" surprisingly doesn't cover all of the possible factors for why a herbicide doesn't deliver 100% satisfaction. A recent field walk illustrated why physical obstruction and weed density are two factors that are every bit as infl... Continue reading
In wheat stubble fields to be planted with corn, there was an unacceptable level of volunteer wheat plants that had emerged after the late September glyphosate application. Volunteer wheat is worth controlling since a modest density of 20,000 plants/ac, when left uncontrolled has resulted in corn yi... Continue reading
Reports are coming in late last week of fields in Eastern Ontario reaching well above threshold levels for soybean aphids. Just a few weeks prior, these fields had only 30 to 40 per plant. I suspect other fields in even Central and Southern Ontario will also experience this kind of rapid increas... Continue reading
As mentioned yesterday, last week trap catches shot up significantly. I've included a graph to show just how big of a flight we are experiencing this year compared to previous years. Ontario 2009 2010 2011 Averages
I've also included an updated graph showing the counties that have been catching t... Continue reading
If you can believe it, we have not reached WBC peak moth flight yet! Trap counts continue to climb and some participants are having a hard time counting them all. During this intense period, I do recommend that our trap participants check their traps more than once a week, simply to keep on top ... Continue reading
Some scouts are starting to notice tiny WBC larvae that have hatched that crawling in the whorl or making their way down to the ear of the plants. To help you know whether they are WBC larvae, here are some photos. You can click on them to enlarge them.
They start out with spots along their b... Continue reading
I've been getting asked this a lot over the last few weeks so I thought I had better finally write a quick blog on it. What is this insect? It's a red-headed flea beetle. Very common in soybeans but even more abundant this year, showing up in other crops too. Defoliation in corn is not a co... Continue reading