(Reuters) - U.S. agrichemicals firm Corteva is exploring a breakup that would separate its seed and pesticide businesses into two separate companies, the Wall Street Journal reported on Friday, citing people familiar with the matter. Separating its crop-seed unit from its pesticide business could help shield its seeds from any potential future liabilities associated with its pest and weed-killing chemicals, the report said, adding that the company is expected to reveal plans soon, barring any last-minute ...