CBOT, KCBT and MGE wheat opened firm on support from rallying corn and soya but quickly turned lower on bearish wheat numbers in USDA's May wheat production and supply/demand reports, traders said.
At 9:36 am CDT (1436 GMT), CBOT wheat was down 3/4 cent to 7 cents per bushel, with July down 6 cents at $8.16 per bushel. KCBT wheat was down 5-1/2 to 11 cents, with July down 11 at $8.57 and MGE wheat down 4-1/4 to 15 cents, with July down 4-1/4 at $9.99 per bushel.