Fenamidone 
Action/Use:
- Fungicide
Use:
For Oomycete diseases, such as grape and vegetable downy mildew, potato and tomato late blight and Pythium.
Identification
Common Name(s): Fenamidone (BSI, ISOPA, not Japan)
Chemistry
Formula: C17H17N3OS.
Mode of Action / Resistance Management
Chemical Group: Imidazolinone
Taget Site: C3: complex III: cytochrome bc1 (ubiquinol oxidase) at Qo site
Mode of Action: Respiration
Action Group: FRAC Code 11
Comments / Risk Notes: High risk. Cross resistance shown between all members of the Qol group.
Environmental Guidelines
Hazards: Fish: LC50 (96 h) 0.74 mg/l. Bird: LD50 >2000 mg/kg (bobwhite quail). Dietary LC50 <5200 mg/kg (bobwhite quail, mallard duck)
Water Solubility: 7.8 mg/l at 20°C
Safety Guidelines
Toxicity: Tech (Rat): Oral LD50 >5000 mg/kg (male), 2028 mg/kg (female); Dermal LD50 <2000 mg/kg
Suppliers and Branded Products
Basic Producers:
Bayer CropScience (IDOL*, Reason*)
Formulators' Trade Names:
OHP, Inc. (Fenstop*)
Premix Products:
+ Cymoxanil
- Arte* — Bayer CropScience
- Duofast* — Bayer CropScience
+ Fosetyl-aluminum
- Elicio* — Bayer CropScience
- Verita* — Bayer CropScience
+ Mancozeb
- Sagaie* — Bayer CropScience
- Sereno* — Bayer CropScience
+ Propamocarb Hydrochloride
- Consento* — Bayer CropScience
