Bragg who runs the research and development activity of Bulrush, is also a fomer head of levy body AHDB Horticulture.
He takes over from outgoing chair Steve Harper from Bord Na Mona.
Harper commented, "Neil is a fantastic successor to the role with his depth and breadth of knowledge, I offer him and the GMA any support they need as we continue to develop our voice and influence across the industry and at government level. This is an important year for our industry with the impending 2020 peat bans and I will now be focusing on leading the Responsible Sourcing Scheme for Growing Media to become an auditable scheme over the next 12 months.
New chair Neil Bragg said, "As an industry horticulture faces many challenges and it is essential that the GMA, as the industry growing media body, projects the positive moves being made to address the key issues faced by the industry and give whatever support it can to end users in addressing these issues."
The GMA, brings together growing media manufacturers and suppliers from UK and Ireland, and is a forum for looking at the key topics impacting the industry from performance standards and technical updates to monitoring usage and the development of the responsible sourcing scheme.
Bragg was recognised with the Pearson medal for his advocacy of the need for horticultural research and development with government.