IPA: /ˌfaɪtəˈpæθəˌdʒɛn/
KK: /faɪtəˈpæθəˌdʒɛn/
A type of organism that causes disease in plants, often by infecting them and harming their growth or health.
The farmer took measures to protect his crops from phytopathogens that could cause serious damage.
Phytopathogen → It is formed from "phyto-" (from Greek "phyton", meaning plant) and "pathogen" (from Greek "pathos", meaning suffering or disease, and "genes", meaning born of or produced by). The word refers to an organism that causes disease in plants.
Think of 'phyto-' meaning plant and 'pathogen' relating to something that causes suffering — this helps you remember that a phytopathogen is something that causes disease in plants.
No commonly confused words.