Corn or soybeans: Which to plant first?

The short growing season in the North means a small window for planting. Unfortunately, current literature suggests the optimal planting dates for corn and soybeans occur at the same time. If planted after the end of April, corn can suffer a loss of 1.75 bushels/acre/day. Soybeans can suffer 0.5 bushels/acre/day, according to Laura Lindsey, soybean and