Today’s market action gave further signs that the seasonal price rally is underway. In the last two days, the November soybean contract has gained 14.25 cents. December corn is up 7.75 cents, and Chicago December wheat is 9 cents higher. General Comments Unexpectedly heavy trading volume was the main feature of the overnight session. The trade count in both soybeans and corn was more than twice as large as the Monday night session. Despite the heavy volume, grain and soy prices did not move far away from Tuesday’s closes. Some of the overnight volume involved spreading, and part of the buying interest was no doubt in anticipation of a seasonal rally that often occurs as the U.S. corn and soybean harvests wind down. Grain and soy prices be...