Edelman previously held the media relations and issues management brief for the non-profit organisation, and was one of four agencies to pitch for it last month.
Cohn & Wolfe's work begins on Monday to explain the work of CPA members, which includes the formulation and manufacture of synthetic and bio pesticides, seed and plant breeding, agricultural biotechnology and the breeding of bees. This will include clarifying the environmental impact of crop protection technologies.
Nick Von Westenholz, chief executive of The CPA, said: "Cohn & Wolfe stood out to our selection panel for its extensive and current experience in engaging on technical and sensitive issues. The CPA is committed to explaining the role of the crop protection industry and the benefits of its products to the community. This includes engaging in constructive and intensive dialogue with relevant stakeholders to ensure that these benefits are fully recognised and accepted."
The association is headquartered in Peterborough and lists 25 member firms on its website, including subsidiaries of global firms Bayer, Dow, Monsanto and Syngenta. It is in turn one of the members of the European Crop Protection Association, based in Brussels.
Yesterday, the association welcomed a European Food Safety Authority verdict that the chemical Glyphosphate, which is used as a weedkiller, was "unlikely to pose a carcinogenic threat to humans", as PRWeek sister title Horticulture Week reported.