Published April 28, 2017 N. Dennis Bowman These young soybean plants emerging near Cisco, IL may wish they were still in the bag, but soybean planting date research shows that in Central and Northern Illinois early planted soybeans tend to have highest probability of maximum yield. Related Content Quick Guide to Cover Crops for Forage 2019June 24, 2019 Corn as a Cover CropJune 21, 2019 University of Illinois Extension 2019 Late Planting ChecklistJune 4, 2019