Today was the day that grain and soy prices broke out of the relatively narrow price bands in which they had been stuck for the past month. The breakout today was to the downside, of course,  and there were three factors that combined to tip over the market. General Comments Turnaround Tuesday, 3 September, appears to be the day that those holding faint bullish hopes for whatever reasons finally gave up. It also appears to be the day that non-commercials decided it was safe to put on short positions or, more likely, add to existing short positions.Today was also the day that grain and soy prices broke out of the relatively narrow price bands in which they had been stuck for the past month. December corn had stayed mostly between $3.7...