Metsulfuron-methyl 60% WDG Herbicide

Metsulfuron-methyl 60% WDG is an advanced sulfonylurea herbicide widely used for post-emergence weed control in cereal crops.
It stands out for its systemic action, meaning the active ingredient is rapidly absorbed through the foliage and roots, then translocated throughout the plant to completely inhibit growth.

Key characteristics include:

• Low Application Rate: Metsulfuron-methyl requires only 4–8 g/ha, making it one of the most economical herbicides per hectare.
  This low-dose efficiency minimizes chemical load on the environment while maintaining strong weed suppression.

• Broad-Spectrum Activity: Controls a wide range of annual and perennial grass weeds and broad-leaved weeds such as wild mustard, chickweed, shepherd’s purse, and pigweed.

• Selective & Safe: When used as directed, it is highly selective for wheat, barley, rice, oats, and triticale, minimizing risk of crop injury.

• Consistent Performance: The 60% WDG formulation disperses easily in water, ensuring a stable spray solution that won’t clog nozzles or leave residues.

• Proven Residual Control: Provides residual soil activity that prevents new flushes of weeds during the early growth stages, reducing the need for multiple passes.

Whether you’re working in dryland wheat rotations or irrigated rice paddies, Metsulfuron-methyl 60% WDG offers reliable, cost-effective weed management that fits seamlessly into integrated weed control programs.

POMAIS supports bulk supply, private labeling, and customized packaging, giving importers and distributors the flexibility to adapt to local market needs while delivering consistent quality.

Mode of Action

Metsulfuron-methyl belongs to the sulfonylurea herbicide family and works primarily as an ALS (acetolactate synthase) inhibitor.
This enzyme is crucial for the synthesis of essential branched-chain amino acids (valine, leucine, isoleucine) that weeds need for cell division and growth.

Once Metsulfuron-methyl 60% WDG is applied post-emergence:

• The active ingredient is absorbed quickly through both foliage and roots.

• It moves systemically within the plant’s vascular system, reaching growing points where cell division is active.

• By inhibiting ALS, the weed loses its ability to produce key proteins, leading to stunted growth, chlorosis (yellowing), and eventual death.

This mode of action is highly effective on both grass and broad-leaved weeds, especially small-seeded species like chickweed, shepherd’s purse, pigweed, and wild mustard.
Its systemic action also means it controls parts of the weed below the soil surface, reducing regrowth risk.

As a post-emergence herbicide, Metsulfuron-methyl is best used when weeds are young and actively growing, which ensures maximum uptake and faster visible results.
Its unique mode of action also makes it an important tool for resistance management, especially when rotated with other herbicide groups to prevent ALS-resistant biotypes from establishing.

Target Weeds & Suitable Crops

Metsulfuron-methyl 60% WDG is valued by growers for its broad-spectrum activity against a wide range of annual and perennial weeds that compete with cereal crops for nutrients, light, and moisture.

Key Grass & Broad-Leaved Weeds Controlled

This sulfonylurea herbicide is highly effective on:

• Annual grass weeds: Barnyardgrass (Echinochloa crus-galli), wild oats (Avena fatua), and foxtail (Setaria spp.) when used with complementary tank mixes.

• Broad-leaved weeds:

  • Wild mustard (Sinapis arvensis)

  • Chickweed (Stellaria media)

  • Shepherd’s purse (Capsella bursa-pastoris)

  • Pigweed (Amaranthus spp.)

  • Henbit, Field pansy, Dandelion, and many other small-seeded annuals and perennials.

These weeds are particularly sensitive to Metsulfuron-methyl’s ALS-inhibiting mode of action, which stops growth before they can compete with young crops.

Suitable Crops

Metsulfuron-methyl 60% WDG is recommended for post-emergence use in:

• Wheat (common and durum)

• Barley

• Rice

• Oats

• Triticale

Its high selectivity means that when applied correctly, it won’t harm the crop while delivering complete weed knockdown. This makes it especially valuable in crop rotations where consistent weed control is required across multiple seasons.

Regional Application

Growers in both temperate and subtropical regions rely on Metsulfuron-methyl to manage problem weeds during the early stages of crop growth. Its residual soil activity helps keep fields cleaner for longer, minimizing the need for repeat spraying and saving labor and input costs.

Whether you’re working on large commercial wheat farms or diversified cereal operations, Metsulfuron-methyl 60% WDG is an efficient tool to maintain yield potential and harvest quality.

Recommended Dosage & Application

To achieve the best results with Metsulfuron-methyl 60% WDG, it is important to follow precise dosage and application guidelines.
This ensures maximum weed knockdown while preserving crop safety.

Standard Dosage

• Application rate:
  Typically 4–8 grams per hectare (g/ha) depending on the weed spectrum, infestation level, and local agronomic conditions.

• For lighter weed pressure or sensitive weeds, use the lower end of the rate.

• For dense infestations or perennial broad-leaved weeds, use the upper range within the label guidelines.

Optimal Application Timing

• Post-emergence window:
  Apply when target weeds are young and actively growing—generally in the 2- to 4-leaf stage for broad-leaved weeds.

• Crop stage:
  Use only when the crop (wheat, barley, rice, oats, triticale) is well established enough to tolerate the herbicide. Avoid late applications that may risk crop injury.

Spray Method & Mixing

• Always use well-calibrated ground sprayers equipped with flat-fan nozzles for uniform coverage.

• Ensure good leaf wetting, as Metsulfuron-methyl relies on foliar absorption for systemic movement.

• Recommended spray volume: 100–200 L/ha clean water for optimal coverage.

• Keep tank contents agitated during application to prevent settling.

• If tank-mixing with other herbicides, follow the recommended mixing order and perform a jar test for physical compatibility.

Soil & Weather Considerations

• Soil moisture: A slightly moist soil surface improves weed uptake, especially under dry conditions.

• Rainfastness: Rainfall within 2–4 hours may reduce efficacy; apply during stable weather windows for best performance.

• Temperature: For maximum effect, apply during mild daytime temperatures and avoid extremes that may stress the crop.

Practical Tip

Always read and follow your local Metsulfuron-methyl herbicide label instructions, as permitted use rates and restrictions may vary by country or region.
Proper stewardship helps maintain the herbicide’s effectiveness as part of an integrated weed management program.

Tank Mix Compatibility & Safety

Metsulfuron-methyl 60% WDG is well-known for its excellent tank mix flexibility, making it an effective tool in integrated weed management (IWM) programs.
When used correctly, tank mixing helps expand the weed control spectrum, especially when targeting mixed infestations of grass and broad-leaved weeds.

Common Compatible Partners

• Phenoxy Herbicides:
  Such as 2,4-D or MCPA, which are frequently mixed with Metsulfuron-methyl to enhance control of stubborn broad-leaved weeds like thistles and docks.

• Glyphosate:
  In conservation tillage or pre-seeding burndown programs, sequential applications help clear existing weeds before the residual effect of Metsulfuron-methyl takes hold.

• Other Sulfonylureas:
  Depending on local label guidelines, some growers combine low-dose Chlorsulfuron or Tribenuron-methyl for broader species control.

Always confirm compatibility based on your local label and conduct a jar test before large-scale tank mixing.

Key Mixing & Safety Precautions

Correct Mixing Order:
Fill the tank with half the water volume first. Add Metsulfuron-methyl 60% WDG slowly with constant agitation. Then add partner herbicides, followed by adjuvants if required.

Use Only Approved Adjuvants:
When label-recommended, only use non-ionic surfactants or wetting agents approved for sulfonylurea herbicides to avoid increasing crop phytotoxicity.

Soil pH Considerations:
Extremely acidic or alkaline tank mixes can reduce herbicide stability and effectiveness—maintain a neutral pH when possible.

Crop Selectivity:
Do not apply tank mixes late in the season or on stressed crops, as this may increase the risk of crop injury.

Resistance Management:
Tank mixing different modes of action helps slow the development of ALS-resistant weed biotypes. Rotate with herbicides from other chemical families each season.

Clean Equipment Thoroughly:
After spraying, rinse sprayers multiple times to prevent carryover residues that could harm subsequent sensitive crops.

Practical Tip

Always follow your local metsulfuron-methyl label guidelines and seek agronomic advice when planning complex tank mixes. Proper mixing, correct adjuvant use, and good sprayer hygiene help ensure safe, consistent performance in the field.

Field Use Scenarios

Growers choose Metsulfuron-methyl 60% WDG for its proven performance in diverse cropping systems where tough broad-leaved and grass weeds threaten yield and quality.
Below are typical field scenarios that show how this systemic sulfonylurea herbicide fits real farm operations.

Scenario 1: Wheat Fields Facing Mixed Weed Pressure

In temperate wheat-growing areas, fields often face a combination of chickweed, shepherd’s purse, and wild mustard emerging soon after planting.
Farmers apply Metsulfuron-methyl post-emergence, when weeds are in the 2–4 leaf stage.
Thanks to its systemic action and residual effect, the herbicide suppresses both emerged weeds and new flushes, keeping the wheat canopy weed-free during its critical tillering phase.

Scenario 2: Barley Rotations in Semi-Arid Regions

In barley fields where moisture is limited, competition from pigweed and small grasses like wild oats can reduce stand density.
Growers spray Metsulfuron-methyl 60% WDG at low rates (4–8 g/ha), often in a tank mix with 2,4-D to broaden the spectrum.
Because of its low application volume and stable WDG formulation, farmers can treat large areas efficiently even with basic spraying equipment.

Scenario 3: Rice Paddies with Resistant Broad-Leaved Weeds

In some rice paddies, shepherd’s purse and other broad-leaved weeds have developed tolerance to older herbicides.
Metsulfuron-methyl is applied post-emergence, ensuring rapid foliar absorption and strong systemic action.
Its soil residual effect also helps prevent late-emerging weeds from establishing, minimizing the need for repeated passes and lowering labor costs.

Scenario 4: Oats & Triticale for Seed Production

In seed crops like oats or triticale, weed contamination can dramatically affect grain purity and market price.
Growers rely on Metsulfuron-methyl for its high selectivity, ensuring strong weed suppression without harming the crop.
This is particularly useful in rotations where broad-spectrum weed control supports long-term field hygiene and reduced weed seed banks.

Key Takeaway

Across these scenarios, the main value is clear: Metsulfuron-methyl 60% WDG provides dependable post-emergence control with minimal crop impact, low chemical input rates, and easy mixing with common partners for broader-spectrum protection.
Whether you manage intensive wheat fields or diversified cereals, it remains a proven option for staying ahead of weed pressure.

FAQ – Common Questions

Q1: What is the standard dosage for Metsulfuron-methyl 60% WDG?

The recommended field rate is 4–8 grams per hectare (g/ha), depending on weed density, weed growth stage, and local conditions.
Always adjust the dose within this range according to your metsulfuron-methyl label and agronomist advice.

Q2: Can Metsulfuron-methyl 60% WDG be used in all cereals?

Yes. When applied correctly, it is safe and effective for use in wheat, barley, rice, oats, and triticale, providing reliable control of broad-leaved and some annual grass weeds.

Q3: What happens if it rains after application?

Light rainfall within a few hours can help activate the herbicide in the soil.
However, heavy rain immediately after spraying may reduce foliar uptake and soil residual performance.
If significant wash-off occurs, consult your agronomist to decide if a partial reapplication is needed.

Q4: Is Metsulfuron-methyl safe to tank-mix with other herbicides?

Yes, Metsulfuron-methyl 60% WDG is compatible with many herbicides, especially 2,4-D, MCPA, and certain glyphosate programs in burndown systems.
Always perform a jar test before mixing and follow the recommended mixing order to avoid formulation issues.

Q5: How long does it remain active in the soil?

Metsulfuron-methyl has residual soil activity that can suppress later weed flushes for 2–4 weeks, depending on soil type and weather.
This helps reduce the need for follow-up sprays and saves labor costs.

Q6: Are there any restrictions for sensitive crops in rotation?

Yes. Because Metsulfuron-methyl has residual activity, always check your local label guidance for safe plant-back intervals, especially if rotating to sensitive crops like certain vegetables or legumes.

Q7: How should I store this product?

Store Metsulfuron-methyl 60% WDG in its original sealed packaging, in a cool, dry, well-ventilated area away from moisture and direct sunlight.
When stored correctly, the product is stable for at least 2 years. Re-check purity if stored longer.

Q8: Do you provide OEM packaging and bulk supply options?

Absolutely. POMAIS offers flexible OEM & private label services, multiple pack sizes (from retail foil bags to bulk fiber drums), and registration support for importers and large-volume distributors.

Why Choose POMAIS & Call to Action

When you choose POMAIS as your Metsulfuron-methyl supplier, you’re partnering with a team that understands how to deliver consistent quality, batch after batch.
Our 60% WDG formulation is manufactured under strict ISO and GMP standards, ensuring every granule disperses smoothly, mixes easily, and delivers dependable field performance under varied conditions.

We work closely with importers, distributors, and agricultural cooperatives worldwide, providing:

• Flexible OEM & private labeling services, multilingual packaging, and local registration support.

• Bulk supply options to fit both seasonal and long-term supply needs.

• Full technical documentation and guidance for safe use and product stewardship.

Whether you supply local cereal growers, large wheat operations, or mixed farms with diverse rotation needs, you can count on POMAIS to back you up with stable inventory, professional support, and responsive after-sales service.

Secure your next batch today — contact our team for a customized quotation, sample requests, or any technical consultation you need.
Together, let’s help your growers achieve cleaner fields, stronger yields, and more sustainable weed control with Metsulfuron-methyl 60% WDG.