This shot just begs to be minimalistic and I think that was your intent here. Unfortunately, the trees (those up close) and the cloud detract from that goal, IMO. As such it's stuck between not needing a subject and needing one and I don't think this has enough going for it to survive in that realm.
That's pretty much it. Everything else in terms of the the technicals are good.
You have this image dominated by the sky, but your title suggests you want the field to be the subject. I'd crop most of the sky out of this picture if you want the field to command more interest. I hope this is useful.