Markets started the Sunday evening session with across-the-board losses. KC wheat was the biggest loser, down more than a dime early. The rainfall map for the next five days summarizes the reason for the weakness. Rains today over parts of Kansas were better than expected, and those in the drought areas of the southern Plains coupled with some showers in Argentina turned today’s markets into a full-fledged rout.

In addition to rain concerns, the markets are also worried the Trump administration might announce more tariffs this week, possibly igniting a trade war  U.S. financial markets were also getting hammered today, losing nearly 2 percent. Crude oil and the U.S. dollar were both slightly easier. It was definitely a &ldquo...