By used to, do you mean in 2012 when corn was around $7 &#x2F; bu?<p>Your typical &quot;field&quot; in the Midwest is a quarter or 160 ac. Iowa has a yield of around 170 bu&#x2F;ac and a typical farmer might have around 8 quarters. If corn is around $4, that works out to 8x160x170x4 = $870k revenue by a farmer for a year (and almost 2x that in 2012!)