The grain markets rallied again Thursday. After struggling or moving lower Wednesday, the crop markets turned upward overnight, with the grain markets continuing their advance this morning. Talk of excess rainfall in the U.S and potential dryness in Russia, Canada and Australia boosted wheat, with corn following right behind. Good export news also powered the yellow grain advance. July corn futures ended Thursday having risen 5.0 cents to $3.65/bushel, while December added 5.0 to $3.8225.