Pyroxasulfone Pre-emergence Herbicide

Product Name	Pyroxasulfone (herbicide)
Active Ingredient	Pyroxasulfone
CAS Number	447399-55-5
Molecular Formula	C12H14F5N3O4S
Target Pests/Weeds	Grass weeds and broadleaf weeds such as barnyardgrass, foxtail, and lambsquarters
Applicable Crops	Corn, wheat, soybeans, sunflower
Dosage	100-200 ml per acre
Mode of Action	Pre-emergent herbicide that inhibits root and shoot development, preventing weed establishment
Tank Mix Compatibility	Compatible with a wide range of herbicides, insecticides, and fungicides
Common Formulations	Suspension Concentrate (SC), Wettable Granules (WG), Emulsifiable Concentrate (EC), Granules (GR)
Common Concentrations	85% WG, 500g/L SC, 45% EC, 10% GR
Packaging Types	1L/bottle, 5L/bottle, 20L/container
Pre-Harvest Interval	30 days
Company Strengths	POMAIS provides high-quality herbicides with global market reach, offering OEM/ODM services and custom packaging solutions

We offer high-quality Pyroxasulfone Herbicide with customized packaging and labeling options to meet the needs of our clients. Our products are manufactured in ISO 9001 certified facilities, ensuring top-tier quality and consistency.

Mode of Action – Blocking Weed Development at the Root

Pyroxasulfone is a soil-applied herbicide that works by inhibiting the biosynthesis of very-long-chain fatty acids (VLCFAs) in weed seedlings. These fatty acids are essential components of cell membranes, especially during active cell division. By disrupting this metabolic pathway, Pyroxasulfone prevents root and shoot development, causing weed seeds to fail before emergence.

Unlike foliar herbicides that require contact with visible weeds, Pyroxasulfone targets germinating weed seeds below the soil surface. It is absorbed through the roots and coleoptiles of developing plants, making it ideal for early-season weed control. Its selective action allows crops like corn, soybeans, wheat, and cotton to grow undisturbed, even when applied across entire fields.

The herbicide is classified under HRAC Group K3, placing it within the lipid synthesis inhibitor family. Its unique mode of action also makes it a strong tool in resistance management programs, especially in fields facing pressure from ALS-, EPSPS-, or ACCase-resistant weed biotypes.

Target Crops & Weeds – Effective Across Diverse Row Crops

Pyroxasulfone Herbicide is formulated for use in a wide range of row crops and cereal systems. It delivers outstanding pre-emergence control of troublesome annual grasses and select broadleaf weeds, even under high weed pressure or in conservation tillage systems.

Recommended Application by Crop

Crop	Key Weeds Controlled	Application Method	Application Rate
Corn (Field & Sweet)	Foxtail, barnyardgrass, pigweed	Soil-incorporated pre-emergence	100–150 g/ha
Soybeans	Waterhemp, crabgrass, lambsquarters, pigweed	Surface or shallow soil spray	100–200 g/ha
Wheat	Wild oats, annual ryegrass, chickweed	Pre-emergence band or broadcast	120–180 g/ha
Cotton	Crabgrass, barnyardgrass, foxtail	Soil-incorporated pre-emergence	100–150 g/ha
Sunflowers	Redroot pigweed, nightshade	Pre-plant or early pre-emergence	100–160 g/ha

Weed Spectrum Includes:

• Grasses: Foxtail (Setaria spp.), Barnyardgrass (Echinochloa crus-galli), Wild oats, Ryegrass
• Broadleaves: Pigweed (Amaranthus spp.), Lambsquarters, Waterhemp, Chickweed

This broad-spectrum activity combined with crop safety gives Pyroxasulfone a strong advantage in early-season weed control programs, minimizing the need for costly rescue treatments later in the season.

Key Benefits – Long-Lasting Control with Agronomic Value

Pyroxasulfone 85% WDG / 50% SC delivers more than just weed suppression—it offers measurable agronomic and economic advantages for growers managing large-acreage row crops. Its pre-emergence activity, residual power, and selectivity provide consistent value from planting through canopy closure.

Long Residual Activity

One application of Pyroxasulfone provides up to 6–8 weeks of residual control, reducing the need for repeat herbicide passes and minimizing early-season weed competition.

Broad-Spectrum Efficacy

Controls a wide range of grass and broadleaf weeds with a single mode of action, making it ideal for fields with mixed infestations and resistant biotypes.

Crop Safety and Selectivity

Safe for major crops such as corn, soybeans, wheat, cotton, and more when used at labeled rates. Its selectivity protects crop roots and shoots, even under variable soil conditions.

Improved Yield Potential

By eliminating early weed pressure, Pyroxasulfone helps maximize nutrient availability, water efficiency, and crop vigor during critical development stages.

Flexible Tank-Mix Compatibility

Compatible with glyphosate, flumioxazin, sulfentrazone, atrazine, and other herbicides, offering flexible weed control programs tailored to local agronomy and resistance concerns.

Resistance Management Value

As a Group K3 herbicide, Pyroxasulfone plays a key role in integrated resistance management plans, especially in areas facing challenges from ALS- or glyphosate-resistant weeds.

With these advantages, Pyroxasulfone supports both input efficiency and crop productivity, making it a strategic solution for modern pre-emergent weed control programs.

Application Guidelines & Dosage – Field-Proven Rates for Maximum Effectiveness

To achieve optimal weed suppression and crop safety, Pyroxasulfone Herbicide should be applied following precise timing and dosage recommendations. Its performance depends on proper soil placement, activation, and alignment with crop planting practices.

General Application Instructions:

• Application Timing:
  Apply pre-emergence—either pre-plant incorporated (PPI) or immediately after planting but before crop and weed emergence.
• Soil Conditions:
  Moisture is required to activate the product. Apply to moist soil or use light irrigation (10–15 mm) within 5–7 days after application if rainfall is absent.
• Application Equipment:
  Compatible with standard boom sprayers, tractor-mounted field sprayers, and granule spreaders (for GR formulations). Use fine to medium nozzles for even coverage.
• Tank-Mix:
  Always perform a jar test when mixing with other pesticides or fertilizers. Maintain agitation during application.

Recommended Dosage by Formulation:

Formulation	Application Rate	Application Volume	Method
85% WDG	100–200 g/ha	200–400 L/ha water carrier	Pre-emergence soil spray
50% SC	100–150 ml/acre (250–375 ml/ha)	200–300 L/ha water carrier	Broadcast or banded soil spray
10% GR	10–15 kg/ha	Granular spreader	Soil incorporation or surface

Note: Do not apply Pyroxasulfone when heavy rain is expected within 2 hours of application. Avoid application to waterlogged or extremely dry soils.

Formulations & Tank Mix Options – Flexible Integration into Modern Weed Control Programs

To meet the diverse needs of large-scale growers, contract applicators, and branded distributors, Pyroxasulfone Herbicide is available in multiple high-performance formulations. These options offer flexibility across different climates, application methods, and tank-mix programs.

Available Formulations:

Formulation Type	Concentration	Description
85% WDG	Water-Dispersible Granules	Easy to transport and mix, dissolves quickly for even application
50% SC	Suspension Concentrate	Ideal for broadcast or banded pre-emergence spraying in row crop fields
45% EC	Emulsifiable Concentrate	Oil-based option for specialized application systems
10% GR	Granules	Low-drift granular formulation, suitable for soil incorporation or surface application in dryland farming

All formulations are manufactured under ISO 9001-certified quality systems, ensuring consistent performance and shelf stability.

Recommended Combination Products:

To improve spectrum and residual activity, Pyroxasulfone is commonly mixed with other pre- or early post-emergence herbicides:

• Pyroxasulfone + Flumioxazin:
  Dual-mode residual control targeting pigweed, waterhemp, and grasses. Suitable for soybeans and cotton.
• Pyroxasulfone + Sulfentrazone:
  A robust mix for tough broadleaf species, often used in rotation crops like sunflower and sorghum.
• Pyroxasulfone + Atrazine or Glyphosate:
  Popular tank-mix options in corn and no-till systems, delivering both contact and residual performance.

These combinations offer added value to resistance management programs and broaden weed control across multiple biotypes and environmental conditions.

Packaging & OEM Support – Tailored for Global Distribution and Brand Growth

At POMAIS, we understand that packaging, compliance, and branding are just as critical as product performance. That’s why our Pyroxasulfone Herbicide comes with a range of custom packaging and OEM/ODM solutions designed to support your business across retail, wholesale, or tender-based channels.

Standard Packaging Options

Liquid Formulations (SC/EC):

• 100 mL / 250 mL / 500 mL bottles
• 1 L / 5 L / 20 L HDPE drums
• 200 L export drums (for bulk supply)

Granular or Powder Formulations (WDG/GR):

• 50 g / 100 g / 200 g / 500 g / 1 kg aluminum foil bags
• 5 kg / 10 kg / 25 kg fiber drums or woven bags
• 50 kg export drums

All containers meet UN transport standards, and we ensure tamper-proof seals, leak resistance, and climate-safe packaging for long-distance shipping.

Customization Services

• OEM & Private Label: Full support for brand-name production including logo printing, design adjustment, and region-specific artwork
• Multilingual Labeling: English, French, Arabic, Spanish, Russian, or as per your regulatory market requirements
• Anti-Counterfeit Features: Optional QR codes, holograms, or scratch codes available
• Low MOQ: Flexible minimum order quantities for new market testing or brand development
• Mixed Container Support: Combine Pyroxasulfone with other herbicides or agrochemicals in one shipment to reduce cost

We work with importers, national distributors, government tender bidders, and private brands in over 60 countries, providing both bulk procurement and market-ready retail packaging.

Safety & Environmental Information – Responsible Use in Modern Agriculture

Pyroxasulfone Herbicide is formulated with user safety and environmental stewardship in mind. While highly effective on weeds, it presents low toxicity to mammals and minimal impact on non-target organisms when used according to label instructions.

Personal Safety & Handling Precautions

• Wear protective clothing, gloves, goggles, and a face mask during mixing and spraying
• Avoid inhalation of spray mist or direct skin/eye contact
• Do not eat, drink, or smoke while handling the product
• Wash hands thoroughly after application and before meals
• Store away from food, feed, and potable water sources

In case of exposure:

Exposure Type	First Aid Response
Skin Contact	Rinse with soap and water. Remove contaminated clothing.
Eye Contact	Flush with clean water for 15+ minutes. Seek medical attention.
Inhalation	Move to fresh air. If breathing is difficult, seek medical advice.
Ingestion	Do not induce vomiting. Contact a poison control center immediately.

Environmental Responsibility

• Toxic to aquatic organisms and algae – avoid spray drift and runoff into water bodies
• Do not apply during heavy rainfall or when drainage is likely
• Avoid contamination of wetlands, irrigation channels, and wildlife habitats
• Observe buffer zones and local environmental regulations during field use
• Do not reuse empty containers – rinse 3 times and dispose of as hazardous waste

Storage & Transport

• Store in original containers in a dry, cool, and well-ventilated area
• Keep away from direct sunlight, heat sources, and open flames
• Maintain temperatures between 0–40°C
• Follow all local laws for transport and handling of agrochemicals

With proper application and handling, Pyroxasulfone provides high efficacy with low ecological impact, supporting sustainable farming practices in both conventional and integrated weed management programs.

FAQ – Frequently Asked Questions About Pyroxasulfone Herbicide

1. What types of weeds does Pyroxasulfone control?
Pyroxasulfone is effective against annual grasses (e.g., foxtail, barnyardgrass, crabgrass, wild oats) and several broadleaf weeds (e.g., pigweed, lambsquarters, waterhemp, chickweed) when applied before emergence.

2. When should I apply Pyroxasulfone?
Apply pre-emergence, ideally just after planting but before weeds or crops emerge. It can also be used pre-plant incorporated (PPI) for crops like corn or soybeans.

3. Is Pyroxasulfone safe for my crops?
Yes. When used at recommended rates, Pyroxasulfone is selective and safe for key crops like corn, soybeans, wheat, cotton, and sunflowers.

4. Can I mix Pyroxasulfone with other herbicides?
Absolutely. It is tank-mix compatible with many herbicides, including glyphosate, flumioxazin, atrazine, and sulfentrazone, depending on the target weed spectrum and local regulations.

5. How long does Pyroxasulfone remain active in the soil?
Pyroxasulfone provides 6 to 8 weeks of residual control, depending on soil conditions, rainfall, and application rate.

6. Is it rainfast after application?
Yes, Pyroxasulfone becomes rainfast after light incorporation or irrigation. Avoid heavy rain within 2 hours of application.

7. What is the pre-harvest interval (PHI)?
The general PHI is 30 days, but it may vary depending on crop and local regulatory requirements. Always follow your national label.

8. Do you provide documentation for registration?
Yes. We offer ICAMA-based registration dossiers, including COA, MSDS, TDS, and technical support for your market’s regulatory process.

9. Can I order private-labeled packaging?
Yes. POMAIS supports OEM and ODM, including multilingual labeling, branded packaging, and anti-counterfeit design features.

10. How can I get a sample or quotation?
Contact our sales team through the inquiry form or email. We offer free samples and fast response with CIF/FOB/DDP pricing.