Shares of Monsanto (MON) sunk in trading on Wednesday after an Arkansas regulatory body decided to bar the company’s latest weedkiller product for a second consecutive summer. The product is crucial for MON’s seed sales and has been an ongoing dispute for over a year now. In addition to these troubles, European regulators decided to push back review of the proposed Bayer-Monsanto merger to March 2018, setting back potential closing of the deal. MON shares closed down -1.81% to settle at 117.38 for the session. Keep an eye on the stock for further developments.