Concise article... I think the CCD the commercial guys see is exacerbated by the stress of moving the colonies such far distances (in addition to the pesticides and everything else). There's a lot to be said for local adaptation and the vigor that comes along with the genetics that are developed from it. For the distances they are shipping these bees, there is a big change in regional ecology, which undoubtedly stresses the bees.
Biodiversity in those big ag areas is also lacking. Seems no one can tolerate a hedgerow anymore. As a forager, I know a lot can be harvested from those brushy roadsides, but the state road feels the need to spray them down with herbicides every spring. You have to get way out on the backroads to find roadsides that haven't been sprayed. They kill off a lot of valuable forage for the bees (and other wildlife).
I feel lucky where I live because most of the land is untouched or lightly managed and my bees have a wide variety of food sources to make use of. The wild blackberries are in bloom right now and last nearly a month. The hayfields up the road are heavily bordered with them and the bees are hitting them hard right now. I sit and watch the hive and nearly every bee is headed in the same direction--up the road. They are ignoring my garden and I'll need to get my borage and other herbs and flowers tucked in the corners to help entice them to stay close to home!
ETA: Hoodat, I have the same problem. Also with tomatoes, I spray once in the summer when the stinkbugs hit or they will cover nearly every green tomato skin with pithy damage just before it ripens. I don't have to spray anything else, but I get disappointing harvests if I don't spray those two things. Any bugs I can pick off by hand I do. Many things will cause only minor damage and for those things I just let the bugs have "their share". I wanted to try the floating row covers on the brassicas this year (to keep the moths from laying), but I didn't get to it in time.