THE OPEN Jan beans:  1 3/4 lower Dec meal:  1.40 lower Dec soyoil:  9 higher Dec corn:  steady Dec wheat:  3 1/4 lower The markets opened as called with grains breaking lower, but wheat and soyoil in the plus column by midday.  Buy wheat/sell corn and buy soyoil/sell meal trade was the outstanding feature of the day. Funds sold the open on mixed messages as regards US /China trade negotiations, and cancellations of bean business.  The major trend last week was to liquidate some bean length while adding to corn shorts.  At the open, negative attitudes and net selling in corn drove prices lower across the board except for soyoil.   At 10:00 export inspections were as follows: Beans:&nb...