Corn and wheat opened lower Sunday with soybeans slightly higher. Everything was slightly lower by the time markets closed this morning, and that is how they opened the day session. Soybeans traded back and forth with small gains or losses through much of today. Wheat was moderately lower with corn down 2-4 cents for a good part of the session. There was nothing new on the China trade front, and 6 July is the magic date for the actual imposition of tariffs. U.S. weather looks fine. The northern Plains was drenched this past weekend, and the Corn Belt could see heavy rain later this week. Meanwhile, the Black Sea region and Australia need precipitation. The funds started this week modestly short wheat, corn and soybeans, and they are still...