LEAD: Over the past year, the number of genetically engineered crops grown in Minnesota has increased dramatically. Soybeans, corn and wheat have all been genetically altered to withstand disease and pests. But a growing consumer movement is fighting to ban the foods from grocery store shelves. Mainstreet Radio's Kathryn Herzog reports. Minnesota Morris Experiment Station to view the latest variety of Roundup Ready soybeans.The beans were created by the Monsanto corporatio