1) Dust effects on post chemical applications, mainly glyphosate. With all this dry weather, the dust is playing havoc with weed control. Glyphosate is very sensitive to dust. You can see the effect in the picture below, the sprayed rounded the corner throwing up dust behind the wheels and the glyphosate was deactivated before it could get on the weeds.
2) Another effect of the dry weather is the control of Lambsquarters. The dryness had hardened off the weed, and lots of calcium and magnesium deposits have formed on the top side of the leaves, making sprays like glyphosate roll right off. Mike Cowbrough with OMAFRA has done some work on it, you can find more at this link: http://beready.caseih.com/available-land/lambsquarters-research-yields-unusual-results/. What may give you a better chance of control when using glyphosate on these Lambsquarters is to increase your water volume, apply after a rain when the plant is actively growing and apply in the early morning before the heat of the day.
3) Here's a bonus to the addition of Broadstrike RC to Boundary applications. Not only are you getting increased control but it does a nice job on Horse Tail too. It won't kill it out completely but will hold it back for the beans to get ahead of it.
4) There are reports of some different bugs being found in area wheat fields including: Cereal Leaf Beetle, Aphids and Army Worm. Below is a picture of some aphids I found. They were the only ones that I found in the field, but it would be a good idea to scout your wheat for insects this year with the weather that we are having. Here is some info from OMAFRA to help: http://fieldcropnews.com/2012/05/wbc-trapps-grubs-and-more-is-this-really-may/
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