We have plenty of farmers getting 50 or 60 bushels (per acre) who should be getting 70 and 80 bushels.

Many growers in Illinois think they do not have a problem, when they are actually suffering some significant yield losses. If they are only getting 50 or 60 bushels per acre, they almost certainly should have some major concerns. With today's high-yielding resistant varieties, farmers should be getting 70 to 85 bushels per acre.