Pyraclostrobin

Action/Use:

Fungicide
;
Plant Health Product
;
Seed Treatment/Protectant

Use: Cabrio* for use on small fruits, cucurbits, fruiting vegetables, garlic, leeks, onions, pistachios, root vegetables (carrots, radishes). Headline* for use on corn, soybeans, citrus, dried shelled peas and beans, peanuts, potatoes, small grains, sugar beets, and grasses grown for seed. Insignia* for use on turf. Pristine* for use on berries, bulb vegetables, carrots, grapes, pistachios, stone fruits, strawberries, and tree nuts. Stamina* seed treatment for use on barley, corn (field, pop, sweet, corn for seed production), legume vegetables (dried shelled peas and beans), rye and wheat. TwinLine* for use on barley, oats, rye, triticale and wheat. Acceleron*, Acronis* seed treatment for use on soybeans. Priaxor* for use on cereal, corn, soybeans, vegetables, oilseed crops. Merivon* for use on pome and stone fruits. Pending use on ornamentals (Empress*).

Identification

Common Name(s): Pyraclostrobin (proposed)

Chemistry

Class: Strobilurin.

Formula: C₁₉H₁₈N₃O₄CI.

Mode of Action / Resistance Management

Chemical Group: Methoxy-carbamate

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.

Registration

U.S.A.: Registration pending 2013 for Empress*.

Outside U.S.A.: Registration pending 2012 for Merivon* and Priaxor* in Europe and South America; Comet* in Brazil; Cabrio* Top in Spain. Opera* in Brazil on sugarcane; France, Germany, and the U.K. for use on cereals. Signum* in the U.K.

Environmental Guidelines

Hazards: Fish: Highly toxic to fish and aquatic invertebrates. Bee: Nontoxic. Cabrio*: Bird: LD₅₀ >2000 mg/kg (quail). Headline*: LD₅₀ >1000 mg/kg (mallard, quail)

Water Solubility: 1.9 mg/l at 20� C

Safety Guidelines

Toxicity: Cabrio: (Rat): Oral LD₅₀ >2000 mg/kg. Dermal LD₅₀ >2000 mg/kg. Inhalation LC₅₀ 4.7 mg/l. Headline*: (Rat): Oral LD₅₀ >500 mg/kg (male), 260 mg/kg (female). Dermal LD₅₀ >4000 mg/kg. Inhalation LC₅₀ 3.51 mg/l

Suppliers and Branded Products

Basic Producers:

BASF Corporation (Cabrio*, Comet*, Empress*, Headline*, Insignia*, Stamina*)

Gilmore Marketing & Development, Inc.

Monsanto Co. (Acceleron* DX-109)

Premix Products:

+ Boscalid