There are many different pressure points facing fund managers these days, and they are stirring up crosswinds for grain and soy markets.Grain and soy futures markets are very nervous. For that matter, most commodity and financial markets are as well. World markets anxiously await Thursday’s referendum vote on whether or not Britain should leave the EU (aka Brexit). No one really knows what will happen if the results favor doing so. There is no precedent for such a move, but the prospect of the departure of one of the EU’s most important members and economic engines is unsettling, to say the least. Even the normally cautious Janet Yellen, chair of the U.S. Federal Reserve Bank, told the Senate Banking Committee this morning that a British ex...