Yes. That largely depends on who you ask. If you ask the people who are selling the seeds, they will tell you untreated seeds are readily available. But I've spoken to many growers, and they say they have asked for untreated seeds. One person actually switched seed dealers because he was told repeatedly that there was no access to untreated seed, so he went to another dealer and purchased untreated seeds.
I believe there is an access problem, but the statistics will bear that out.
Something else we'd like to see is whether there is a cost differential between a treated seed and an untreated seed. I don't believe, if there is a difference, that it's much. I think seeing that a treated seed was much more expensive than an untreated seed would help a lot of growers make a much more informed decision. If there's no cost differential, then why not use the cheap insurance?