Systemic fungicides are those that are absorbed into the plant. Locally systemic fungicides move within the plant but not far from the site of penetration. Some locally systemic fungicides can have a translaminar mode of action and move through the leaf from one side of the leaf to the other.
Systemic fungicides require the plant to be actively growing in order to circulate through the plant to control disease. New leaf growth is protected for a short period. Unlike contact fungicides, systemic fungicides can sometimes be used to supress a disease after it has infected a plant.
- Fungicide is absorbed into the plant
- Can be used to suppress the fungus after infection
The Bayer fungicide with a systemic mode of action is;