Nathan - Not clear on your question... Whenever we re-seed in new alfalfa fields, the cover crop we use is oats. So, when it is time for the first cutting, usually around the time of 2nd crop for established fields, we cut the oats just as the seed heads are starting to come out, usually about 20%. The oats have a hollow stem so there isn't as much there when it comes to baling as what it looked like when it was mowed. The animals LOVE the oat hay. We just went through a couple of weeks feeding oat hay, just because thats where it was in the hay piles.