DES MOINES, Iowa (AP) - It's decision time for many Midwest farmers stuck in one of the wettest springs ever: Plant or replant corn in muddy, puddled fields or collect crop insurance. The USDA says 91 percent of the nation's corn is planted; normal for this time of year is 95 percent. The water-logged states of Iowa, Minnesota, Missouri, and North Dakota are all behind, but Wisconsin is the worst with just 74 percent planted. Farmers still hope for a large harvest, which is possible if the weather cooperates. That would keep food and beverage prices steady. A major worry is that the drought, which began last year in June, will return. Corn and soybeans planted in wet soil do not develop deep roots. If it gets too dry too quick, it will spell disaster.