The CBOT was mixed at mid-week amid a general lack of fresh news. Corn and soybeans both drifted lower in quiet trade and extended Tuesday’s pullback and reversal, respectively. Wheat futures pushed higher as the Ukraine export corridor agreement remains in jeopardy while U.S. basis levels are rising, especially for high-protein wheat. Funds were slight net sellers in corn and cautious sellers in soybeans, having been burned by the WASDE’s unexpectedly bullish implication, and were net buyers in wheat.  The Ukrainian export corridor agreement is under fire this week as Russian and Turkish officials meet. On Wednesday, Russian President Putin said that “The issue has not been resolved” regarding his complaint th...