O
- OCH
- octhilinone
- ofurace
- oprodione
- organomercury fungicides
- organophosphorus fungicides
- organotin fungicides
- orysastrobin
- oxadixyl
- oxathiin fungicides
- oxazole fungicides
- oxine copper
- oxpoconazole
- oxycarboxin
Read more about this topic: List Of Fungicides