Pyrazophos
Action/Use:
- Fungicide
Use:
For powdery mildew on apples, cereal, cucumbers, grapes, melons, ornamentals, pumpkins, squash, strawberries, and watermelon; Helminthosporium on cereal.
Identification
Common Name(s): Pyrazophos (ISO, BSI)
Chemistry
Class: Phosphoric acid ester.
Properties: Olive brown to dark green crystalline solid. Melting point 51°-52°C. Soluble in most organic solvents.
Mode of Action / Resistance Management
Chemical Group: phosphoro-thiolates
Taget Site: F2: phospholipid biosynthesis methyltransferase
Mode of Action: lipids and membrane synthesis
Action Group: FRAC Code 6
Comments / Risk Notes: Low to medium risk
Environmental Guidelines
Water Solubility: 4.2 mg/l at 25°C
Hazards: Fish: Very toxic. Bee: Hazardous
Safety Guidelines
Signal Word: WARNING
Toxicity Class: II
Handling/storage Cautions: Store between 10°-30°C. Protect from warmth, direct sunlight, and wetness. Keep container tightly closed in cool, well-ventilated place; open and handle carefully. Wash thoroughly after handling. Do not store or transport with food
Toxicity: Tech (Rat): Oral LD50 151-778 mg/kg
Suppliers and Branded Products
Basic Producers:
Bayer CropScience (Afugan*, Curamil*)
Premix Products:
+ Flusilazole
- Stark* — Bayer CropScience
+ Myclobutanil
- Model* — Bayer CropScience
Discontinued Names:
Furesan*
Masolon*
Missile*
Siganex*
Sigma*
