My cousin recently field collected a southern pine. It’s in a nursery pot with the original soil which is mostly sand. The main tap root was severed, however not all the way back to the shin. Appears to have a few large roots extending from the root ball. Not sure what to do with it now. Let it ride the season and see how it survives and move to a larger container next spring or repot now and no needle or branch work until next year.