InvestmentsTop Global NewsMarketsReal Estate Monsanto pleads guilty to using banned pesticide on research crop By financialnews_rlv83x - November 22, 2019 0 102 Biotech giant Monsanto on Thursday agreed to plead guilty to illegally using a banned and highly toxic pesticide on research crops at one of its facilities on the Hawaiian island of Maui and to pay $10 million in fines.