Chemical companies are developing soybean, corn and cotton varieties tolerant of harsh older...

|By:, SA News Editor

Chemical companies are developing soybean, corn and cotton varieties tolerant of harsh older pesticides so that farmers can freely spray these on fields invaded by weeds that are growing immune to Monsanto's (MON) Roundup. It's a "very significant opportunity" for Dow Chemical (DOW), DuPont (DD), Bayer (BAYRY.PK), BASF (BASFY.PK) and Syngenta (SYT).