 We'll tip USDA left corn crop condition ratings unchanged from the previous week with 68% good to excellent, 9% poor to very poor. Crop watchers see little threat to the corn crop. Pro-farmer crop consultant Dr. Michael Cordonier for Soybean and Corn Advisor raised his national average corn yield one bushel per acre to 180 bushels per acre. Currently, he sees a crop of 14.85 billion bushels per acre.