TOO WET-TOO DRY: Wheat, corn and soybeans rose as investors wondered if wet weather in parts of the country would delay spring planting. Concerns also lingered about dry conditions affecting the winter wheat crop.
RATING IMPACT: Most commodities fell after Standard & Poor's Ratings Service lowered its outlook on U.S. government debt. S&P says it has little confidence that an agreement will be reached on a budget-deficit reduction plan before the fall 2012 elections.
SAPPED ENERGY: Oil prices fell 2.3 percent. Heating oil, gasoline and natural gas each fell at least 1 percent.