Apr 6, 2015 Spring planting getting underway in Central Illinois Spring planting getting underway in Central Illinois Relatively dry conditions have allowed spring planting to get underway in Central Illinois through the Northwest parts of the state. Average corn yields between 2013 and 2014, increased nearly 20 bushels per acre, in high producing areas. A large part of this increase in harvest yield is the ability to work good ground, early. As you make plans for your investment or tillable properties, be sure to see your regional LandGuy for opportunities in your area. -LT Taylor