Nihon Shokuhin Kako Co. Ltd., Japan’s largest buyer of corn for use in food, is importing genetically modified supplies for the first time this year as high prices deter gene-pure purchases, a company executive said. [...] Corn prices have risen 56 percent in the past year and reached a record $6.16 a bushel in Chicago on April 9. ”We have no choice but to use GMO corn, as the grain is becoming increasingly costly and the price differential between GMO and non-GMO supplies is widening,” Shoji said April 11.