Tribenuron Methyl 10% WP

Tribenuron Methyl 10% WP is a post-emergence, selective sulfonylurea herbicide for broadleaf weed control in wheat. The active is absorbed via leaves and roots and translocated throughout the plant to stop growth quickly; susceptible weeds cease elongation within hours and typically die in 1–3 weeks. The 10% WP formulation (also available as 10% WDG) delivers low use rates, clean tank dispersion, and reliable field performance across varied climates.
Typical control includes Artemisia annua, Chenopodium album, Capsella bursa-pastoris, Amaranthus retroflexus, Polygonum hydropiper, with useful activity on Kochia scoparia, Stellaria spp. Efficacy is limited on thistles (Cirsium spp.), field bindweed (Convolvulus arvensis), Euphorbia spp.
For spectrum expansion and resistance stewardship, market-proven mix partners/formulations include:

• Tribenuron 13% + Bensulfuron-methyl 25% WP

• Tribenuron 5% + Clodinafop-propargyl 10% WP

• Tribenuron 25% + Metsulfuron-methyl 25% WG

• Tribenuron 1.5% + Isoproturon 48.5% WP

• Tribenuron 8% + Fenoxaprop-P-ethyl 45% + Thifensulfuron-methyl 2% WP

• Tribenuron 25% + Flucarbazone-Na 50% WG

Shelf life: 2 years in original packaging. Use once per season to slow resistance development.

Mode of Action

Tribenuron Methyl 10% WP is a selective ALS (acetolactate synthase) inhibitor in the HRAC Group B / WSSA Group 2. It is systemic, entering via leaves and roots and moving through xylem and phloem to the meristems (growing points).

How It Works

• Target Enzyme: Inhibits ALS/AHAS, blocking biosynthesis of branched-chain amino acids (valine, leucine, isoleucine).

• Physiological Effect: Protein synthesis and cell division halt → growth stops within hours; visual symptoms develop over 1–3 weeks.

• Symptoms on Susceptible Weeds: Early chlorosis at growing points, reddening/purpling, then necrosis and plant death; minimal immediate wilting.

Selectivity in Wheat

• Crop Tolerance: Wheat rapidly metabolizes/ detoxifies tribenuron to non-phytotoxic compounds at labeled rates.

• Operational Window: Best results on actively growing weeds at 2–6-leaf stage; avoid applications during drought, frost, or cold stress to minimize transient crop effects and maximize efficacy.

Resistance Considerations

• Known Resistance Mechanisms:

  • Target-site mutations in ALS enzyme.

  • Enhanced metabolic detoxification in certain weed biotypes.

• Stewardship: Limit to one application per season; rotate with non-Group B herbicides; tank-mix with compatible partners to broaden spectrum and delay resistance.

Systemic translocation to meristems ensures thorough shutdown of growth processes, producing a clean field with a relatively slow but decisive kill.

Target Weeds & Application Timing

Tribenuron Methyl 10% WP provides effective post-emergence control of a wide range of annual broadleaf weeds in wheat fields. It is absorbed through leaves and roots, rapidly halting growth and leading to complete weed death within 1–3 weeks under normal conditions.

Weed Spectrum and Control Level

Weed Species (Scientific Name)	Common Name	Control Level	Remarks / Application Notes
Artemisia annua	Sweet wormwood	Excellent	Apply at 2–6 leaf stage for best results
Chenopodium album	Common lambsquarters	Excellent	Early-stage weeds highly susceptible
Capsella bursa-pastoris	Shepherd’s purse	Excellent	Rapid growth stop within 24–48 hrs
Amaranthus retroflexus	Redroot pigweed	Excellent	Ideal at early post-emergence stage
Polygonum hydropiper	Water pepper	Excellent	Uniform coverage improves kill rate
Kochia scoparia	Kochia	Moderate	Slightly less sensitive; higher rate advised
Eupatorium hybridum	Eupatorium	Moderate	Combine with partner herbicide for stronger control
Stellaria media	Chickweed	Moderate	Sensitive when small (<4 leaves)
Cirsium arvense	Canada thistle	Poor	Use tank-mix with clopyralid or 2,4-D
Convolvulus arvensis	Field bindweed	Poor	Not recommended as sole product
Euphorbia spp.	Spurge species	Poor	Requires mixture with additional herbicides

Recommended Timing

• Application Window: Apply post-emergence when wheat is at 3–5 leaf stage and weeds are at 2–6 leaf stage.

• Environmental Conditions: Ensure active weed growth; avoid frost, drought, or waterlogging.

• Spray Interval: Apply once per season only. Re-treatment increases resistance risk.

Tribenuron works best on young, actively growing weeds. Older or stressed weeds reduce performance.

Dosage & Mixing

Tribenuron Methyl 10% WP is applied post-emergence in wheat when target weeds are young and actively growing. Calibrate equipment for even coverage and maintain constant agitation.

Recommended Application Guidelines

Crop / Timing	Weed Stage	Rate (product/ha)	Water Volume	Notes
Wheat (3–5 leaf stage)	2–6 leaf (annual broadleaf weeds)	150–300 g/ha (= 15–30 g a.i./ha)	200–400 L/ha (ground)	Use lower rate on small, susceptible weeds; higher rate on larger or mixed infestations
Wheat (tillering)	Small–medium weeds, actively growing	200–300 g/ha	250–400 L/ha	Avoid drought, frost, or cold stress for best performance
Spot/edge treatments	Patchy escapes	0.15–0.30 g/L (spray solution)	As needed	Treat before weeds harden; ensure uniform wetting of foliage

Rainfastness: ~2–4 hours under normal conditions.
Application frequency: Once per season (per field) to slow resistance evolution.

Mixing Order (Jar test recommended)

1. Fill tank ½–⅔ with clean water (avoid highly alkaline or muddy water).

2. Start agitation.

3. Add WP/WDG products first → SC/SE → EC → adjuvants (if allowed by label).

4. Top up with water while mixing; maintain agitation during spraying and when pausing.

Adjuvants & Compatibility

• Adjuvants: A non-ionic surfactant (NIS) may improve uptake on waxy leaves—only if permitted by the local label.

• Compatible partners (examples): bensulfuron-methyl, metsulfuron-methyl, isoproturon, clodinafop-propargyl, fenoxaprop-P-ethyl, flucarbazone-Na (check local registrations).

• Do not mix with strongly alkaline products; conduct a jar test before first use.

Nozzles & Sprayer Setup

• Use flat-fan nozzles for uniform leaf coverage; medium droplets (avoid fine drift).

• Boom height ~50 cm above target; steady travel speed; overlap 30–50% depending on nozzle pattern.

Always follow the registered label in your country. Observe local buffer zones and stewardship rules.

Advantages

Tribenuron Methyl 10% WP delivers consistent, selective control of problem broadleaf weeds in wheat with low use rates and strong stewardship fit.

1) Selective & Wheat-Safe

• Function: ALS inhibition with rapid translocation to meristems.

• Benefit: Reliable control of key broadleaf weeds without crop injury at labeled rates.

• Result: Clean rows and minimal stand stress, protecting yield potential.

2) Low Dose, High Efficiency

• Function: Potent sulfonylurea active at 15–30 g a.i./ha.

• Benefit: Less product to handle and store; efficient logistics for distributors.

• Result: Lower per-hectare cost and streamlined application programs.

3) Broad Post-Emergence Window

• Function: Effective from wheat 3–5 leaf through early tillering on 2–6 leaf weeds.

• Benefit: Operational flexibility across variable field conditions.

• Result: Fewer missed timings and more consistent, season-long outcomes.

4) Strong Fit for Resistance Programs

• Function: Clear Group B/WSSA 2 mode of action labeling and tank-mix versatility.

• Benefit: Easy to rotate with non-Group B partners to diversify selection pressure.

• Result: Slower resistance evolution and sustained field performance.

5) Clean Label & OEM Ready

• Function: Stable WP/WDG formats; multi-language labels and COA/MSDS package.

• Benefit: Faster registrations and brand customization for regional markets.

• Result: Accelerated time-to-market and stronger shelf presence.

Use once per season and rotate modes of action to preserve efficacy.

Crop Safety & Rotation

Tribenuron Methyl 10% WP is selective to wheat at labeled rates. Use under normal growing conditions to minimize transient crop effects.

Wheat Crop Safety

• Tolerance: Rapid wheat metabolism/detoxification at recommended rates.

• Best Timing: Wheat 3–5 leaf; avoid applications during frost, drought, waterlogging, or heat stress.

• Tank-Mix Care: Follow label—test small areas first when mixing with phenoxy herbicides (e.g., 2,4-D) or ACCase inhibitors to avoid additive stress.

Rotation & Follow Crops

• One Use per Season: Apply once per crop season to slow resistance development.

• Sensitive Follow Crops: Potato, peanut and other broadleaf pulses/vegetables may be sensitive shortly after application—observe local plant-back intervals.

• Safer Follow Crops: Cereals (wheat/barley) typically safe after normal intervals; check country label for exact re-crop restrictions.

Always consult your local registered label for exact plant-back intervals and tank-mix approvals.

Packaging & OEM

Delivering flexible private-label options to accelerate your market entry.

Standard Packs

• WP / WDG: 10% concentration

• Sizes: 10 g, 50 g, 100 g, 500 g, 1 kg (foil sachets / composite pouches / jars)

• Outer: Printed cartons with inner liners; tamper-evident seals

OEM / ODM Services

• Artwork & Languages: English, Spanish, French, Arabic, Russian, etc.

• Regulatory Adaptation: Country-specific label statements and hazard icons (GHS).

• Custom Kits: Multi-pack promotions, trial-size sachets, display cartons.

• Supply Formats: Finished goods or bulk for local repacking.

Logistics

• Batch-coded shipments with COA enclosed; SGS inspection on request; export-experienced team for MEA/LATAM/Central Asia.