Market prices were driven steadily lower for much of the last six months, largely by the abundance of U.S. and world supplies of grains and soybeans. Nevertheless, USDA's 1 June stocks report should not be ignored as it has a history of producing market-making surprises.As everyone remotely associated with grain markets must surely know, USDA will release its "final" estimate of planted acreage for major and minor spring planted crops plus the 1 June quarterly stocks report on 30 June.This is always one of the most important USDA reports of the year, and markets always look forward to it with eagerness and some anxiety. The USDA/National Agricultural Statistics Service (NASS) acreage estimates are based on surveys and samplings conducted in...