(AP) - The U.S. Agriculture Department says May corn prices are up slightly in South Dakota.

The South Dakota office of the National Agriculture Statistics Service says corn, at $6.67 per bushel, is up 8 cents from last month.

Soybeans are up 50 cents from last month at $14.50.

The preliminary winter wheat price, at $7.29, is up 5 cents from last month. The spring wheat price, at $7.70, is 16 cents lower than last month.

The Ag Department says the preliminary all sunflower price, at $22.80, is down $1.20 from last month.