When I checked into them a few years ago I was told by the FSA that if you enrolled in the upland bird buffer then you couldn't do any other CRP practices inside of that buffer. Meaning that if you did a 150' foot buffer all the way around a field that was 240 acres and that used up 30 acres. The remaining 210 acres inside of that practice wasn't eligible for any other CRP practices and had to remain in production or hay until the upland bird buffer contract had expired. They also told me I couldn't drive on it or mow to help establish shrubs. I will tell you that every NRCS office seems to interpret the rules differently and that you should check with your office. If they say you can plant shrubs, drive, mow what ever on your CRP contract then make sure they put it down in writing before you sign up. I didn't sign up for the upland bird buffer. I felt that I would rather do a general sign up someday. They haven't had any general sign ups that I know of in at least the last five years only extensions of existing general sign ups. The biggest problem with CRP programs is some of the dumb restrictions they put on the various practices. For example I have some bottom ground that would qualify for wetland restoration. The practice was to allow 3 acres of upland ground for every 1 acre of hydric soil (bottom). So I envisioned digging a small slough 3-5 acres with about 35 acres of NWSG around and uphill from it. I thought to make it perfect I would have about 10 acres of shrub plantings scattered in several locations (1-2 acres each) to provide some woody habitat for winter protection of upland birds, deer and turkey. So a total of about 50 acres in the CRP contract. I would then have the remaining tillable around the project in row crop which will provide the needed food sources. Sounds good right? Well, I had the NRCS look at the site and they said it would qualify for wetlands but I can't plant any shrubs/woody habitat because of restrictions in the wetlands contract. I said that's fine then I wont sign up for the wetlands CRP. I plan to do my various tree and schrub plantings as time and money allow me. I will make the wetland myself and will farm around the habitat improvemets I have made. Eventually if they have a general CRP sign up I may put the tillable portion around those improvemets into NWSG depending on the restrictions at the time the sign up is offered. I would make sure you read and ask lots of questions before signing any CRP contract. Most of the programs I have looked into had more negatives than positives. Therefore, I have done most of my habitat improvements on my own with no assistance from the government. That way I can develop the land how I want, thus providing the wildlife with the most diverse habitat possible. Which I feel will allow my kids to have the best hunting opportunities for various species in the future. The best part is I don't have the government telling me how I have to manage my land. If I want to mow something or drive on it I don't have to request in writing permission from the FSA. The negative part is I don't get the CRP payments for my habitat improvements. The increased wildlife and changing landscape is payment enough for me. Again, all that I do is for my kids and someday their kids. Thus not recieving a CRP payment hasn't stopped me from putting in 40' foot strips of NWSG on field edges, both sides of interior fences, above and below terraces as well as planting shrubs along the fences and terraces at my own costs and without payments. The main thing with a specialized CRP practice is if the practice does what you want and you can live with the restrictions then sign up, otherwise I would just do pockets of trees/schrub habitat and farm around them. If they have a general sign up then you can put the remaining tillable into the general sign up when the time comes. That is if you can live with the restriction they have on the general sign up.