Chicago Board of Trade wheat and soybean futures all turned higher on Tuesday as a stubbornly bearish market gained support from weather issues in Brazil and a flurry of short covering as funds shift out of their huge net short positions.

Lower prices, moisture concerns cited; moisture has since improved somewhat
Hefty global grain supplies, competition for export business anchor prices
Increased projections for South American corn, soybeans, U.S. wheat carryout
Weak prices for maize could encourage planting other crops
Corn, soy firm ahead of USDA data
Corn drifted upward, soybeans declined