That's a big garden, but if you have enough people working on it, planting by hand is probably still doable. You'll want to stage crops like bush green beans and sweet corn. Plant bits of them about 10 days apart to spread out your harvest. Put something quick to grow, like radish or cover like buck wheat in between. There are some nice, push type Earth xxx(forgot their full label) planters that will accept different plates for different seeds. My Dad has one like this in one of the sheds out back. Some day, I may take my pickup there (all the way in Oklahoma) and take it home with me. Dad's dead now.
I assume this has been plowed before. If not, I'd have someone come in and do the plowing for you.
I recommend something called the Keulavator that Agri Supply has. You can attach a couple of disc hiller discs onto it and run those at 45 degrees behind the rear wheels on a smaller CUT and make nice raised rows about 3 1/2' apart. If you feel the need to really cultivate the soil before this, Agri Supply sells tine cultivators that'll do this. I have an old soil ripper mounted on my 18.5 hp, 4' wide 4010 JD that'll take either 7 tine plows or 3 or 4 tine plows plus disc hillers or just disc hillers alone. I cultivated out the raised rows I'd made with my Gravely rotary plow with the cultivator tines and then made the raised rows with the disc hillers. I've just mulched the rows or used a combo of buck wheat plus mulching since then. I just part the mulch and plant seeds by hand.
A "B" type Kubota or JD 2320 or 2520 would be about the right size machines. Even a "BX" Kubota or JD 2305 would do if you don't have some uneven terrain that's unfriendly to their underside hydraulic fans and coolers. The raised rows won't be high enough to give any troubles. There's another JD that's usually just for mowing that would also do for this, as it has a light duty 3 ph.
Ralph
