THE OPEN May beans:  13 higher May meal:  6.70 higher May sohyoil;  24 higher May corn:  1/4 higher July wheat:  13 higher The markets opened as called with corn prices trading either side of even to begin the session.   Light profit-taking was the start of the day theme, but pullbacks held as bean stocks in China are the lowest in 10 years.   Shipments from Brazil have been slow, with rains delaying port loadings, and strikes in SA threaten to disrupt shipments more.  According to Ag Consultancy Cofeed, China's crush was said to be down as much as 5.7% last week.  Buy wheat and beans/sell corn continues as energies weaken again during the trading session.   At 10:00 Ex...