Not a Farmer by any means but with this Profit driven society perhaps Profit is the only standard success is measured by today. Of the Field Corn, by the use of the word Field perhaps it referred to as fit for Animals only. For Silage, as we harvested the whole of the plant less roots and it was ground up green and blown into the Silo, cows went wild for it, plus the moisture draining from the base of the Silo. Even the Farm boys I worked with were amused to see me eat the raw Cattle Corn, they wouldn't touch it, thought it fit for cows only, crap humans eat cows. Of today's food take out the Salt, Sugar and Fat what have you left? Much of the population is kept alive by Pills. In general if one is doubtfull of a food supply, offer it to an animal, if the animal refuses to eat it, generally it's unfit for human consumption, however cows will lick paint and die from it, the old paint anyway. Read the label if it has one.