The Labor Day holiday marks the unofficial end of summer in the U.S. with schools reopening, the football season underway, Congress returning to Washington, and fall harvests already beginning in southern production areas. This fall promises to be very active from almost any perspective. Macro factors include the booming U.S. economy versus the economic woes among developing economies; the bullish, volatile oil market; U.S. politics and the midterm election in November; and multiple trade conflicts. More directly related to grain and soy markets will be the course of the U.S. corn and soybean harvests; the tightening world wheat and corn balances; Northern Hemisphere winter wheat planting; spring planting in South America; and the ongoing d...