More acreage of all three cops is needed, along with a favorable 2008 growing season, says U of I's Darrel Good.
Farm Futures survey finds that corn planting intentions rise from August survey but trend lower from 2007 record.
Southern plains wheat crop continues to decline.
Recent weather continues to hurt wheat prospects.
Many areas of the country are seeing dry conditions.
Majority of wheat planted is rated in good to fair condition.