The news from the weekend trade talks with China wasn’t good, which prompted a continuation of last week’s sell-off in wheat, corn, and soybeans. The “big swing” is that the market has gone from expecting a $25 billion increase in commodity sales to China to thinking the U.S. could now see a big decline in commodity exports to China.  Disappointing trade talks weren’t the only factor motivating the selloff. Last week’s markets finished with weekly technical reversals, which brought more liquidation of long positions. Funds are long everything except soybean oil.  The U.S. Northern Plains and western Canada got a good shot of rain over the weekend. Weather is still an issue on other parts of th...