In its crop production report released last week, the U.S. Department of Agriculture (USDA) forecast record corn and soybean crops for U.S. farmers.

Corn production is forecast at 15.1 billion bushels, up 11 percent from last year but down slightly from the September forecast. Based on conditions as of Oct. 1, yields are expected to average 173.4 bushels per acre, down 1 bushel from the September forecast but up 5 bushels from 2015. If realized, this will be the highest yield and production on record for the United States.

Iowa corn production is forecast at 2.67 billion bushels according to the latest USDA National Agricultural Statistics Service Crop Production report. If realized, production would be a record high, surpassing last year’s record of 2.51 billion bushels. Based on conditions as of Oct....