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Affinity - Carfentrazone-Ethyl 40% DF - FMC
FMC Affinity is a Carfentrazone-Ethyl 40% DF post-emergence herbicide (HRAC Group 14) for label-listed broadleaf weeds in wheat and direct-seeded rice. It acts by contact for rapid burn-down of treated weed tissue. Apply only at the crop-specific timing, dose and water volume stated on the supplied label.
Item description
FMC Affinity Herbicide Overview
FMC Affinity contains Carfentrazone-Ethyl 40% DF, a post-emergence contact herbicide registered for selected broadleaf weeds in wheat and direct-seeded rice.
Affinity belongs to HRAC/WSSA Group 14 and inhibits protoporphyrinogen oxidase (PPO). Susceptible weeds show rapid injury after treated foliage is exposed to light. Correct spray timing and thorough coverage of young, actively growing weeds are important. Use the product only on the crops, weeds and timings listed on the supplied Indian label.
Key Features
- Fast contact action: FMC states that visible effects on susceptible broadleaf weeds can appear within 48–72 hours under suitable conditions.
- Targeted broadleaf control: Registered weed lists cover important broadleaf weeds in wheat and direct-seeded rice.
- Post-emergence use: Applied after crop and weed emergence at the crop-specific timing shown on the label.
- Distinct mode of action: HRAC Group 14 chemistry can support a label-compliant resistance-management programme.
- India-specific guidance: The application table below uses registered Indian use directions and does not borrow claims or rates from overseas Affinity products.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand | FMC Affinity |
| Active ingredient | Carfentrazone-Ethyl 40% DF |
| Product type | Post-emergence contact herbicide |
| Mode-of-action group | HRAC/WSSA Group 14 (legacy Group E) |
| Target enzyme | Protoporphyrinogen oxidase (PPO) |
| Chemical family | N-phenyl-triazolinone |
| Registered crop systems shown here | Wheat and direct-seeded rice |
How It Works
- Foliar contact: Spray droplets contact exposed foliage of susceptible weeds; good coverage is important because movement within the plant is limited.
- PPO inhibition: Carfentrazone-Ethyl blocks an enzyme involved in chlorophyll production, causing light-activated compounds to accumulate.
- Membrane disruption: Treated cells lose membrane integrity, leading to rapid spotting, drying and burn-down of susceptible tissue.
This is contact action, not the systemic ALS-inhibitor action associated with some overseas products that also use the Affinity name.
Registered Crops, Weeds & Application Guide
| Crop & timing | Label-listed weeds | Formulation dose/ha | Water/ha | PHI |
|---|---|---|---|---|
| Wheat 25–35 days after sowing | Malva parviflora, Rumex spp., Chenopodium album, Lathyrus aphaca, Vicia sativa, Medicago denticulata, Melilotus alba, Melilotus indicus, Anagallis arvensis and Cirsium arvense | 50 g | 400 L | 80 days |
| Direct-seeded rice 10–15 days after sowing | Ludwigia parviflora, Digera arvensis, Phyllanthus niruri, Spilanthes spp., Eclipta alba and Cyperus spp. | 62.5 g | 300 L | 102 days |
PHI = pre-harvest interval. Rates are stated per hectare exactly as published; no per-acre, per-litre or pump conversion has been inferred. The supplied product label is the final authority.
Application Best Practices
- Timing: Spray only within the crop-specific window and when label-listed weeds are young and actively growing.
- Coverage: Use properly calibrated equipment and the registered water volume to cover exposed weed foliage evenly.
- Mixing: Follow the sequence and agitation directions on the supplied label. Do not assume compatibility with another herbicide, fertiliser or adjuvant.
- Drift: Prevent spray from reaching nearby crops, water bodies and non-target vegetation.
- Weather: Do not spray in strong wind or when rainfall, temperature or crop stress conflicts with label directions.
Resistance Stewardship
Repeated use of one mode of action can select resistant weeds. Identify the weed correctly and combine label-compliant cultural, mechanical and chemical practices. Rotate effective herbicide groups only where each product label permits the crop, weed and timing. Do not exceed the registered dose or number of applications.
Frequently Asked Questions
1. Is FMC Affinity systemic?
No. Carfentrazone-Ethyl is primarily a contact herbicide, so even coverage of target foliage is important.
2. Which crops are covered by the use table?
The registered directions shown here cover wheat and direct-seeded rice. Do not extend these directions to barley, oats, soybean or transplanted rice unless the supplied Indian label specifically permits it.
3. Does it control grassy weeds?
Affinity is positioned for the label-listed broadleaf weeds and sedges. Use only against targets named on the label; do not infer grass control.
4. Can it be tank-mixed with another herbicide?
Only when the supplied labels explicitly allow the combination and a qualified adviser confirms compatibility. Do not rely on overseas Affinity directions.
5. How quickly are effects visible?
FMC reports visible effects on susceptible weeds in about 48–72 hours under suitable conditions; actual speed varies with weed stage, coverage and weather.
Safety & Disclaimer
Read the complete supplied label before opening or using the product. Wear the label-specified personal protective equipment, avoid inhalation and skin or eye contact, keep people and animals away from the treated area as directed, and protect water sources. Store locked in the original labelled container away from food, feed, seed and children. Dispose of empty containers and residues only as instructed by the label and local rules. Product information is for identification and planning; the current Indian label and applicable registration conditions take precedence.
Quick Facts
Watering
Twice a week
Sunlight
Indirect light
Humidity
High 60-80%
Temperature
18-27°C