I got a hold of a biologist at nrcs he was very helpful and spoke to me for about an hour then sent me an email about what he thought it might be. He agrees with Bill Cody but he wasn't sure how to verify it and didn't know of a way to eliminate it. He gave me the names of a couple of books for graduate students that might deal with it. I guess I will try to get them and see exactly how much I didn't know