I've got 4 plots on 80 acres, one that is a 1/4 acre, another is 1/3 acre and two micro plots. The "micro plots" were planted in places where the loggers parked their equipment when the property was logged 9 years back and they are basically oval shaped and no more than 50' by 75'.
I just started the 1/3 acre plot last fall with a clover mix and winter rye as a nurse crop and it looks really good. We had rain predicted for this coming week so I trimmed it to 6" to help keep the weeds at bay, but now the rain has been dropped from the forecast. The ground was still holding good moisture so I am thinking that the clover will be ok.
The 1/4 acre was in clover, but I'd been fighting smartweed for a couple of years and it finally won the battle. Killed the plot right after green up, disked it a couple of weeks later, then sprayed it again 2 weeks later. Replanted it in a brassica, oats and wheat mix right before a rain 2 weeks ago and it is doing well. Had extra seed from that planting, so I used it in the the two micro plots.
I've not had much experience with a brassicas other than turnips, so time will tell if the deer use them much. Being kind of new to brassicas, I added the grains because I know the deer will eat them. I did throw out a few turnips several years ago, but the deer took them to the ground when they got to be about 4" tall. Obviously the deer on the property hadn't read any of the articles telling them that they don't like turnips until after the first frost! There is also a 2 1/2 acre field that a neighbor mows for grass hay that gets some activity, but with the last cutting being around Labor Day there isn't a lot of nutrition left there going into the fall.