Bayer starts Monsanto integration as stock suffers

German chemicals and pharmaceuticals giant Bayer said Thursday that it would begin integrating seeds and pesticides maker Monsanto after a mega-merger, but its stock price was battered by the US firm's legal woes. Two months after the $63 billion deal -- the biggest ever foreign takeover by a German company -- Bayer completed the sale of a final tranche of crop science businesses worth 5.9 billion euros ($6.7 billion) to rival BASF under concessions imposed by cartel watchdogs. With competition authorities' conditions met, "the integration of Monsanto into the Bayer Group can begin," the Leverkusen-based company said in a statement.