Corn futures turned lower Thursday morning. After exhibiting considerable strength over the past week, corn futures turned lower this morning. That may have reflected long liquidation before the weekend and next Tuesday’s big USDA reports, but traders may also have been reacting to the equity market losses sustained this week, as well as the morning rebound by the U.S. dollar. Both are seen as negative for commodity demand. May corn futures sagged 2.75 cents to $3.9225/bushel late Thursday morning, while December slid 2.5 to $4.155.