Except for wheat, the CBOT and CME’s major ag markets were uniformly lower in a relatively unexciting trading session Thursday. Wheat managed to escape the mid-holiday doldrums after news broke that a civilian bulk cargo vessel hit a Russian sea mine in the western Black Sea. The obvious risk the event poses to additional grain shipments sent wheat futures higher, though they could not quite match Tuesday’s rally high. Earlier this week, the wheat rally pulled corn higher too, but that was not the case on Thursday. Corn futures and the entire soy complex ended lower as weather forecasts show strong chances of heavy rainfall for central Brazil and Argentina over the next two weeks. The bearish weather implications, combined with...