SPREADS Major trends include higher oilshare and crush, and heavy volumes in Dec spreads.  Yesterday, the Dec/March corn spread accounted for about 70% of the total volume and trades into 10c after trading out to 11 1/2c yesterday.  First notice day for Dec contracts is one week from tomorrow.  Dec wheat/corn trades up to 1.50 1/4c from 1.44 3/4c.  Corrective action in palm oil and soyoil finds oilshare correcting back below 34%.  Dec 19/Dec 20 corn trades out to 28c from 27c.  Jan/March beans trades out to 14c from 13 3/4c.   PALM OIL Feb. down 22 ringgits on profit-taking.  According to Anilkumar Bagani, research head at Mumbai-based vegoil broker Sunvin Group and Agricensus, "Chinese vegoil...