Re: ABJ article, page 1148 , "It is the Mites because"
Not trying to turn this into a pesticide thread, but may be useful info.
I realize that I'm am possibly too small scale to post here, but I had 1000 acres of dicamba soybeans this year, and had half my 60 hive amongst them, all doing well. Many of which I sprayed dicamba within 10 feet of the hives, during daytime hours, as the label requires. I can attest that there were never any indications that it caused a problem inside my hives, or with my foraging force. I did however notice that there was a correlation between queen returns and my spray activity. Not sure if perhaps I mighta sprayed/killed the queens with chems, or if maybe they were refused entry because they smelled. Might've even had a case of lost their way home, or unrelated, I suppose.
25% of my hives were along fields that got sprayed via airplane for moths, most were sprayed with prevathon, which is supposed to be more bee friendly. It wasn't a year where much fungicide was needed, but a few do include it if they have to spray for moths. All hives produced and grew well.
Hindsight is 20/10, not 20/20...
After the fact, I always know what didn't work.