THE OPEN May beans:  5 higher May meal:  2.90 higher May soyoil;  25 higher May corn:  1 lower July wheat:  4 3/4 higher Prices opened as called with more fund selling in the corn market against firmer wheat, beans, and meal at the start of the day.  Later in the session, weaker corn weighed on all else in a low volume session.   Soyoil prices retained a firm feel as palm oil plantations shut down, suggesting a return to tighter supplies.  Incredibly, crude oil trades below $20/barrel to $19.85/barrel, though soyoil prices decouple from energies.  Buy beans and wheat/sell corn trade continued to be a theme for most of the day.  Higher Chinese markets continued to help beans and m...