Trump Calls for China To Lower Ag Tariffs; Managed Money in Sizable CBOT Short Heading into Spring

** AgResource Pre-Opening Sunday Calls: Soybeans 2-4 cents higher, corn 1-2 cents higher with wheat called 1-3 cents higher.      ** Weekend Weather & CBOT Market Discussion: Opening week CBOT calls are higher. News late Friday had the Trump Administration asking China to remove their retaliatory tariffs on US ag products based on trade talk…