Mid-August until mid-September is often relatively quiet or even dull for grain and soy markets because there is not much to inspire trading or move prices. By the start of that period, it is usually possible to access prospects for U.S. fall-harvested crops such as corn and soybeans with reasonable confidence in their conditions and what to expect in terms of production. However, those assessments are seldom confirmed or challenged until the fall harvests are underway in earnest, and this usually does not happen before mid-September. If traders take vacations, it is often during this interim. 2018 does not fit the usual pattern. There will still be the lag time between mid-August crop expectations and the actual harvest results beginning...