UK head Colin Golding is also stepping down. He will be replaced by Austin Davies, as Bayer integrates its garden and environmental science divisions.
Following the retirement of Pascal Housset as global head of Bayer Environmental Science, there have been a number of management changes.
Gunnar Riemann has taken over as president and launched the Change To Grow initiative. Under the scheme, managers will have smaller territories but will be responsible for more product ranges within them.