"Maybe I should have specified that the food plot will be for the deer in my hunting area" I wondered. Those wouldn't have been what I would plant as a winter crop for MY consumption.
Sugar beets? For people food? My understanding has always been that sugar beets, like sugar cane, is not so much "eaten as is" but is processed into sugar.
Yes, folks eat beets, but beets, like come in the can down at the store, are not sugar beets. Different strain.
Back to the question.
I don't know if this is true, but read many years back where this kid planted sugar beets, and when he thinned 'em he threw the thinnings to the hogs. Said that the pork that year was uncommonly sweet.
Since I presume your plan it to shoot a deer or twenty, and stick 'em in the freezer, I'd go with the sugar beets.
Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
I always take precautions.
Beware the Evil Bullet Fairies.