Bayer CropScience's US Environmental Science business has made a number of appointments to its vegetation management operation. It has named Daniel Zapotok as vegetation management product manager. He was previously specialty herbicide portfolio manager at DuPont. Steve Williams has been appointed eastern sales manager. He was formerly US sales manager for DuPont with responsibility for the vegetation management, forestry and railway markets. Jason Belcher becomes eastern region regional stewardship manager. He was previously the eastern US field development representative with DuPont. Bayer has also added 13 sales staff to the business. The company acquired certain land management herbicide assets from DuPont last year.