Recent history has been one of growing demand for U.S. commodities, tight U.S. and world stocks of feed grains and wheat, sporadic production problems and record high prices. With sizable feed grain, wheat, and soybean crops expected for 2008-09 and some cracks forming in the demand picture, prices may take on a weaker tone, in the view of University of Illinois Economist Darrel Good. Prices are expected to remain relatively volatile as both production and demand uncertainty persist, he says.  "This report shows an amazing recovery for the corn crop and we have pulled back from a crisis in food supply and crop availability," said Chris Hurt, Purdue University economist.