Affinity Herbicide by FMC (Carfentrazone-ethyl 40% DF)
The ultimate "Burn Down" solution for tough broadleaf weeds in Wheat and Rice.
Affinity by FMC Corporation is a specialized, post-emergence herbicide designed for precision weed control. Powered by Carfentrazone-ethyl, it provides rapid, visible results within days, ensuring your crop gets the nutrients it needs without competition from invasive weeds like Bathua and Ludwigia.
Best For: Farmers seeking a low-dose, high-potency solution with excellent crop safety and environmental compatibility.
Why Choose This Product? Key Benefits
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Rapid Action (48-72 Hours): Unlike slow-acting systemic herbicides, Affinity delivers a "burn down" effect. You will see weeds drying up and undergoing necrosis within 2 to 3 days of application.
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Superior Crop Safety: Marketed as a "Green Label" product, it is highly selective. It targets the enzymatic pathways of weeds without harming your Wheat or Paddy crops.
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No Carryover Effect: The chemical degrades rapidly in the soil, ensuring complete safety for subsequent crops in your rotation cycle.
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Rainfastness: Quickly absorbed by plant foliage, reducing the risk of the product washing away if it rains shortly after spraying.
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Resistant Weed Control: Effective against "tough-to-kill" broadleaf weeds that may have developed resistance to other chemical groups.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Affinity |
| Technical Name | Carfentrazone-ethyl 40% DF |
| IRAC MoA Code | Group 14 (PPO Inhibitor) |
| Chemical Group | Triazolinone |
| Formulation | Dry Flowable (DF) Powder |
| Toxicity Label | Green Label (Eco-friendly) |
How It Works: Mode of Action
Affinity works as a PPO Inhibitor. It targets the chlorophyll biosynthetic pathway in weeds.
- Absorption: The herbicide is absorbed rapidly through the foliage (leaves) of the weed.
- Enzyme Blockage: It inhibits the PPO enzyme, causing an accumulation of intermediates in the plant cells.
- Cell Membrane Rupture: Upon exposure to sunlight, these intermediates react to rupture cell membranes, leading to rapid desiccation (drying out) and death of the weed.
Note: This action is light-dependent, meaning it works best on sunny days.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Wheat | Chenopodium album (Bathua), Melilotus indica (Siji), Rumex spp. (Jangli Palak/Dock) |
| Rice (Paddy) | Ludwigia parviflora, Eclipta alba, and various semi-aquatic broadleaf weeds. |
| Plantation Crops | General broadleaf weed control (as per label instructions). |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (gm / Acre) | Water (L / Acre) | Dose (gm / Litre) | PHI (Days) |
|---|---|---|---|---|
| Wheat | 20 g | 100 - 120 L | 0.2 g | 80* |
| Rice (Paddy) | 20 g | 100 - 120 L | 0.2 g | 30* |
| Potato (Haulm) | Consult Label | 150 L | - | 7 |
*PHI = Pre-Harvest Interval. *Note: Dosages are based on standard 40% DF formulations (e.g., 20g packs). Always verify with the printed leaflet on your pack.
How to Apply: Best Practices
- Timing: For Wheat, apply after the 2-leaf stage but before the flag leaf appears. For Rice, apply during early tillering.
- Mixing: Dissolve the granules completely in a small quantity of water first, then add to the main tank. It is compatible with tank mixes like 2,4-D or TotalSol® partners.
- Coverage: Use a flat fan or flood jet nozzle for uniform spraying. Ensure the weeds are fully wetted.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. How quickly can I see results?
Affinity is a fast-acting herbicide. You will typically see necrosis (drying of weeds) within 48 to 72 hours of application.
2. Is Affinity safe for my crops?
Yes, when used as directed, Affinity has excellent selectivity for Wheat and Rice crops, destroying weeds without harming the harvest.
3. Can I mix Affinity with other herbicides?
Yes, Affinity is often used in tank mixes (e.g., with 2,4-D or Metsulfuron) to broaden the spectrum of weed control. Always perform a small compatibility test first.
4. What is the formulation of Affinity?
It is a 40% DF (Dry Flowable) formulation, which means it comes as granules that dissolve easily in water without clogging nozzles.
5. Does it harm the next crop?
No. Affinity has a favorable environmental profile and degrades rapidly, posing no risk to subsequent crops in your rotation.
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.
