US agrochemical distributor Wilbur-Ellis (Walnut Creek, California) has appointed Michael Wilbur to the newly created role of national director of ag technology. He will be responsible for the company’s AgVerdict online tracking system. Mr Wilbur was previously national director of seed technology. The company has appointed David Ferrell to that post. Mr Ferrell joined Wilbur-Ellis in 2009 as regional seed manager for the company’s south-central operations. Wilbur-Ellis has also promoted Troy Johnson to vice-president of Mid-West operations.