PYZERO Weed Control 10 EC

PYZERO 10 EC is a metamifop-based selective herbicide formulated as an emulsifiable concentrate (EC). The Philippine Fertilizer and Pesticide Authority (FPA) lists Pyzero 10 EC with 100 g/L metamifop for use in direct-seeded rice against barnyard grass and Leptochloa grass. FMC Philippines describes it as a systemic and contact, late post-emergent selective herbicide belonging to HRAC Group 1. (FMC Ag US)

Product Details

• Product Name: PYZERO Weed Control 10 EC
• Product Type: Herbicide
• Formulation: Emulsifiable Concentrate (EC)
• Active Ingredient: Metamifop
• Concentration: 100 g/L
• Herbicide Group: HRAC Group 1
• Action: Systemic and contact, selective, post-emergence herbicidal activity
• Registered Crop: Rice (direct-seeded)
• Target Weeds: Barnyard grass and Leptochloa grass (FPA)

Product Benefits

• Provides selective control of troublesome grass weeds in rice.
• Helps control difficult-to-manage grasses such as Leptochloa, Echinochloa, and Ischaemum. (FMC Ag US)
• Provides both systemic and contact activity against susceptible weeds.
• Helps reduce weed competition for nutrients, water, sunlight, and growing space.
• Can help minimize the need for follow-up herbicide applications when used appropriately.
• EC formulation allows dilution with water according to the registered label directions.

How PYZERO Works

PYZERO contains metamifop, a selective herbicide belonging to HRAC Group 1. It is absorbed by susceptible grass weeds and interferes with normal growth, eventually causing the affected weeds to stop developing and die.

FMC reports that visible effects on susceptible weeds can appear approximately 3–5 days after application, including chlorosis of new leaves, reddish or purplish discoloration of older leaves, and rotting of tissues at the growing point. Weed control is described as occurring within approximately 5–10 days, depending on conditions. (FMC Ag US)

Target Weeds

PYZERO 10 EC is registered for grass-weed control in direct-seeded rice, particularly:

• Barnyard grass (Echinochloa spp.)
• Leptochloa grass
• Other susceptible grass weeds, including Ischaemum species, according to FMC product information. (FMC Ag US)

The exact weed species, application timing, rate, and field conditions should always be taken from the current registered product label.

Recommended Use

Use PYZERO 10 EC only according to the approved product label.

For effective weed management:

• Identify the target grass weeds before application.
• Apply when weeds are actively growing.
• FMC recommends application during the early to late vegetative stage of rice or when weeds have reached approximately the 4–5 leaf stage. (FMC Ag US)
• Use only the prescribed application rate and spray volume.
• Ensure adequate coverage of the target weeds.
• Follow the recommended crop and weed growth stages.
• Prevent spray drift onto non-target crops and vegetation.
• Rotate herbicide modes of action where appropriate to help manage herbicide resistance.
• Do not apply to crops or situations not covered by the registered product label.

Safety Precautions

• Keep out of reach of children.
• Wear appropriate PPE during mixing and application.
• Avoid skin and eye contact.
• Avoid breathing spray mist.
• Do not eat, drink, or smoke while handling the product.
• Avoid contamination of food, feed, waterways, and aquatic environments.
• Prevent spray drift onto non-target crops and vegetation.
• Store securely in the original container.
• Dispose of empty containers according to applicable pesticide regulations.
• Read and follow the product label before use.