Soybean futures on the Chicago Board of Trade rose on Wednesday due to a rise in oil prices and expectations of changes in US biofuel policies. Adverse weather conditions in Brazil and other South American countries are also supporting soybean prices. The wheat and corn markets also saw sharp increases due to the slow pace of planting of winter crops in key origins. The dollar's gain against the real is also supporting Brazilian soybean prices. Over 2.5 million tons of soybeans have already been traded in Brazil.