Corn futures at the Chicago Board of Trade turned higher early Wednesday, supported by the strength in wheat and soyabeans, traders said.
The corn market through July 2005 was up 3-1/4 to 2 cents per bushel by 10:50 am CST (1650 GMT). July 2004 through July 2005 made new contract highs.
Corn has moved in tandem with soyabeans over the past month, trying to ensure enough planted US corn acres this spring to meet projected demand.
CBOT May soyabeans climbed to a 15-1/2-year high of $9.99 early.
Tight US stocks and concerns about the South American soya crop continue to ignite the market.
But corn moved to the morning highs amid active corn/wheat spreading after nearby wheat rallied 10 to 13 cents on recent export business and hopes for more.
The CBOT oat market set contract highs across the board as the market remained technically strong and followed the rallies across the floor, traders said. May oats were up 4-1/4 cents at $1.66-1/4, after climbing to $1.66-1/2.