thanks dipper -- I will wait a bit longer as suggested. I have one field that has winter rye but is not particularly thick and has some significant grass competition. The best procedure for this field would be spread seed, cultipack, then spray? Last year I did not work the field up at all and just broadcast rye seed into standing winter rye and then ran a brush hog over it.
Gotta kill that grass, otherwise it is only going to get worse. Personally, I would drill your fall crop in if you can. You don't need a no till drill if you are adding things like peas, oats, clover, brassicas, more rye, etc. If you have to broadcast, that's what you gotta do.
Was that rye you brush hogged, mature when you cut it? Did it seed itself? It appears when that rye is planted super thick the fall prior, it doesn't get as tall, and appears thinner the next summer.