I have wondered if I can actually do that. I wpuld prefer diatomaceous earth over any pesticide. Can I really sprinkle it over the crops?
This is the one I use
So much to learn...so many journals to follow.
You don't want to sprinkle it so much as "poof" it on. Get a puffer applicator sold to get this material into walls and crevasses. It's effective in that regard against bedbugs, in fact it's the only thing that will kill them consistently, but you have to poof it in and around.
DE is really the microscopic fossilized skeletal remains of tiny earthlings. Think about it for a minute. If you sprinkle it you run the risk of layering it in such a manner that the critters your trying to ward off can gingerly skip across the boney field. "Poof" it in and you create an impassable area that'll scratch the hell out of the exoskeletons of the invading insects and cause them to desiccate.
I'm typically tolerant of smaller earthlings, but if I'm going to use a product as effective as DE I'm going to make sure I'm not wasting the effort. Of course the DE is an excellent silica addition to the garden, so nothing's truly wasted.