Gardening/ farming .. for Calories...
Calories/yield/ acre
Jerusalem artichoke, = 345 cal / lb x 66,000 lb / acre = 22,770,000 cal / acre
Carrot = 186 calories/ lb x 40,000 lb/ acre = 7,440,000 cal / acre
Sugar Beets = 315 calories / pound, 60,000 lb/ acre = 18,900,000 calories/ acre
Winter...