CBOT Trends: wheat down 2-4 cents, corn up 1-3 cents, soy up 5-7 cents

Reuters expects Chicago Board of Trade grain and soy futures to open mixed on Tuesday, with wheat pressured by a firmer dollar and corn and soybeans supported by bargain-buying. The USDA said winter wheat planting was 27% complete, corn harvest 18% complete and soybean harvest 17% complete.