The CBOT waivered again on Tuesday with corn and wheat posting losses for the day while soybeans firmed once again. News that China is likely to soon approve an agreement on phytosanitary conditions to import corn from Brazil put corn on the defensive for the day. Moreover, corn and wheat both broke below last week’s lows and/or technical support, which further contributed to the day’s selling. Early weakness in U.S. equities and other macro-markets also kept the CBOT on the defensive with traders liquidating some positions ahead of the coming three-day weekend. Bear grain/soy spreading was again popular, though volumes were quiet overall as traders are largely in “wait and see” mode.  For the day, funds are th...