Welcome to Iowa's corn sweat tradition, where millions of acres of corn team up with summer heat to make it feel even steamier than a boiled and buttered cob. From my earlier years growing up on an Iowa farm, I've really felt it now more than ever. As much as we like to complain about corn sweat, those endless green fields are doing important work. During a growing season, one acre of Iowa field corn produces about 12.5 tons of oxygen. Highest Paying Jobs in Iowa That are Hiring These are the top highest-paying jobs in the state currently, according to Iowa Works.