Glean - Chlorsulfuron 75% WG - FMC
FMC
Glean - Chlorsulfuron 75% WG - FMC
Product details
Glean® Herbicide by FMC: The Ultimate Broadleaf Weed Control
A powerful, low-dose Sulfonylurea solution for wheat, barley, and fallow systems.
Glean® (Chlorsulfuron) is a cornerstone product from FMC Corporation, designed to tackle tough broadleaf weeds in cereal crops. Originally developed by DuPont, this "tier-one" herbicide revolutionized farming with its low-dose chemistry. It stops weeds at the enzyme level, providing long-lasting residual control to keep your fields clean from planting through harvest.
Best for: Cereal farmers looking for cost-effective control of Mustard, Pigweed, and Thistles with flexible application timing.
Why Choose This Product? Key Benefits
- ⏱️ Stops Growth Instantly: Weed growth arrests within hours of application, preventing them from competing with your crop for water and nutrients.
- ?️ Broad Spectrum Control: Highly effective against difficult weeds like Wild Mustard, Redroot Pigweed, and Canada Thistle.
- ⏳ Long-Lasting Residual: Remains active in the soil to suppress late-emerging weeds, keeping fallow fields clean for months.
- ?️ Flexible Timing: Can be applied Pre-emergence (before weeds appear) or Post-emergence (after weeds appear) for maximum convenience.
- ? Ultra-Low Dosage: Requires only grams per acre, not kilograms, making it easier to handle, store, and transport.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Glean® (Herbicide) |
| Technical Name | Chlorsulfuron |
| IRAC MoA Code | Group 2 (WSSA) / Group B (ALS Inhibitor) |
| Chemical Group | Sulfonylurea ($C_{12}H_{12}ClN_{5}O_{4}S$) |
| Formulation | 750 WDG (Water Dispersible Granule) or XP |
| Toxicity Label | Caution (Low Mammalian Toxicity) |
How It Works: Mode of Action
Glean works by targeting the specific biological systems of weeds without harming cereal crops (which can metabolize the chemical safely).
- Absorption: The active ingredient, Chlorsulfuron, is rapidly absorbed through both the roots and foliage of the weed.
- Enzyme Inhibition: It moves to the growing points of the plant and inhibits the ALS enzyme. This blocks the production of essential amino acids (valine, leucine, isoleucine).
- Growth Arrest: Without these amino acids, cell division stops immediately. The weed stops growing, turns yellow (chlorosis), and eventually dies within 1-3 weeks.
Note: Visual symptoms may take a few weeks, but the weed stops competing with your crop almost immediately after spraying.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Wheat (Winter & Spring) | Wild Mustard, Redroot Pigweed, Chickweed, Henbit |
| Barley & Oats | Wild Turnip, Lambsquarters, Hemp Nettle |
| Fallow / Non-Crop | Canada Thistle, Russian Thistle, Kochia (suppression) |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Glean is a high-potency granule, so precision is key.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (Granules / Acre) | Water (L / Acre) | Method | PHI (Days) |
|---|---|---|---|---|
| Wheat / Barley | ~8 - 10 grams (or 0.33 oz) | 40 - 80 Litres | Pre or Post Emergence | See Label |
| Oats | ~6 - 8 grams | 40 - 80 Litres | Post Emergence Only | See Label |
| Fallow Land | ~8 - 10 grams | 60+ Litres | Spray on Weeds | - |
*PHI = Pre-Harvest Interval: Check local regulations. Note: Header adjusted to "Granules" as Glean is a solid WDG formulation.
How to Apply: Best Practices
- Timing: For Post-emergence, apply from the 2-leaf stage up to the boot stage (before the flag leaf appears). For Pre-emergence, apply before crop germination.
- Mixing: Always add Glean granules to the water first. For post-emergence sprays, add a Non-Ionic Surfactant (NIS) at 0.125% - 0.5% volume to help the chemical stick to waxy weed leaves.
- Coverage: Ensure good soil moisture if applying pre-emergence, as the chemical needs to move into the root zone to work.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not drain spill water; remove contaminated soil physically.
Frequently Asked Questions
1. Is this related to Glean AI / Software?
No. This page is about the agricultural herbicide
manufactured by FMC Corporation. Glean AI is a separate enterprise
search technology company.
2. How long does Glean stay in the soil?
It is persistent. In high pH soils (>7.9), it can
remain active for 2-3 years. You must check the label restrictions
before planting sensitive follow-up crops like Lentils or Canola.
3. Can I mix Glean with other herbicides?
Yes. It is often tank-mixed with MCPA, 2,4-D, or
Dicamba to prevent weed resistance and improve control. However,
do not mix with organophosphate insecticides.
4. Does Glean kill grass weeds?
It is primarily a broadleaf killer. It provides some
suppression of grasses like Foxtail and Annual Bluegrass, but it
is not a dedicated grass killer (graminicide).
5. What happens if I spray in acidic soil?
In acidic soils (pH < 6), Glean breaks down
faster, reducing the risk of carryover to the next crop, but
potentially shortening the duration of weed control.
Safety & Disclaimer
Always read and follow the instructions on the official product label. The information provided here is for guidance only. Use personal protective equipment (PPE) during application. Do not use on soils with pH > 7.9 due to carryover risks.