Something got mixed up in my translation. I thought you said that the whole area was 10 acres. Are you now saying that the area where you can make the plot is 10 acres? If that is the case, then 1/4-1/2 acre would be adequate. But I would make strips of various plantings, especially if you haven' t put in any plots before. This will tell you what the deer will prefer and not tie up the plot with something they don' t care about. Also, deer are buffet eaters, they like variety.

Russ