The weather is supposed to improve over the northern part of the Midwest, allowing a robust planting opportunity, and speculators opened the day by initially selling corn for that reason as well as concern over the trade spat with Mexico. Wheat prices remained firm, which initially held corn up from a precipitous fall. Ultimately, though, corn was mostly off 0.75-2.75 cents. Soybeans had a higher tone, but large stocks unsurprisingly pushed soyoil lower, and meal followed. The cattle market saw significantly more red than green despite robust demand in the U.S. and lower meal prices. The challenge, as always, is accurately reading the mixed signals. The bulls are focused on more rain late this week for the southern U.S. Plains and NASA&rsq...