Up to 1940: 25 bushels per acre Modern yield: 170 bu/ac. The increase in past 80 years has been amazing. https://www.agry.purdue.edu/ext/corn/news/timeless/y

Up to 1940: 25 bushels per acre Modern yield: 170 bu/ac. The increase in past 80 years has been amazing. https://www.agry.purdue.edu/ext/corn/news/timeless/yieldtrends.html https://www.agry.purdue.edu/ext/corn/news/timeless/yieldtren...