Chicago Board of Trade wheat futures fell to contract lows early in Thursday's session, weighed by signs of strong export competition and plentiful global supplies, traders said. As of 11:13 am CST (1713 GMT), CBOT March wheat was down 5-1/2 cents at $2.89-3/4 after sliding to $2.89, pushing through the previous contract low of $2.92-1/4.