Alison Stewart has been appointed chief executive of the Foundation for Arable Research (Far).
Dr Stewart, who is general manager forest science at Scion, takes over in mid-March from founding chief executive Nick Pyke, who has led the organisation since 1995.
Last year, Mr Pyke signalled his intention to step down from the role, saying making the decision was not easy but the time was right.
Far is an applied research and information transfer organisation responsible primarily to arable growers.
In August last year, cropping farmers overwhelmingly supported continued investment in research and extension for their industry, following the fifth referendum of growers.
Far's board chairman, David Birkett, said Dr Stewart was an internationally recognised scientist with specialist knowledge in the area of plant protection.