* The Thursday report was expected to show that farmers seeded 40.933 million acres of winter wheat, up from 40.646 million a year ago, according to a Reuters survey. * US wheat ending stocks were seen at 842 million bushels and stocks as of Dec. 1, 2011 were expected to be 1.695 billion bushels. * South Korea's largest feedmaker, Nonghyup Feed (NOFI), bought 118,000 tonnes of corn, 55,000 tonnes of feed wheat and 55,000 tonnes of soybean meal for April and May delivery. * Analysts were expecting USDA's export sales report to show wheat export sales in a range from 250,000 to 400,000 in latest reporting week, up from 168,200 last week.