At Shea AG, we provide the highest quality seed to ensure your farming and planting success, season after season. We are a dealer for DeKalb Corn, we have full confidence that our seed offerings will provide you with the best genetics and highest yield potential! Dekalb Corn Seed offers a full line of silage and grain varieties,with the latest in trait technology. We can help you find the best varieties for your fields. Growing Confidence. Farmers who plant DEKALB® have many reasons to be confident in their seed choice. You can find out more about DeKalb's corn seed varieties here.