Add me to the list of those that say 3 acres aren't nearly enough. I finally had a good looking plot this year, thanks to some timely rain, only to find it mowed down by the second week of gun season. We're in the Panhandle but not on a creek or river bottom so I'd estimate we have @ 1 deer per 50 acres. I didn't see 26 different deer over the course of the entire season. My plot was slightly less than an acre and was WW, WR and Oats. I think it would take at least 10 acres on our place and that's with much lower deer density than you have. At this point, I'm strongly considering going back to corn only. Cheaper, less time consuming and at least my quail will be happy that way even if I never see any deer at the feeders.
Do food plots if you like doing food plots and have the equipment, time and funds to do them. Otherwise, corn works and is a whole lot easier.
PS/Edit - just noticed that you were asking about Spring/Summer plots. I personally would not mess with those unless you plan to irrigate since the deer will have plenty to eat in non-drought years, and in drought years, well, you'll have to irrigate those plots to keep them alive. IMO, without irrigation, spring/summer plots are a waste of time unless, maybe, you're planting legumes to increase nitrogen or a cover crop to eliminate weeds in your fall plot (again, assuming you have irrigation or sufficient rains). Even then, I'm not sure that Round Up and fertilizer wouldn't be cheaper assuming you plant a fall plot, especially if you factor in time spent.
Edited by Herron (01/12/16 09:50 PM)