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Prefix

CaroVail · EPA Reg 100-1268 · Herbicide Document last checked 2026-05-30

About this product

Active ingredient Pending extraction
Manufacturer CaroVail
Category Herbicide

Full details for Prefix

Source product label ↗ Open the catalog source label while the local copy is reviewed. Verify the product name, EPA registration number, and revision before use. EPA registration data Reg. 100-1268 — registry reference, signal word and status.

Applicator discussion

Nothing here is label direction — the label is the law. These are notes from other applicators, moderated before they appear. Check the labeling accompanying the product and applicable state requirements.

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According to the label From the product label

These details were extracted from this product's label PDF. The label is the law. Confirm every rate, site, restriction and safety requirement against the label before mixing or applying. Check for a state supplemental label; a product may be restricted or prohibited in a state or site even when a rate appears below. · EPA registration data for Reg. 100-1268 →

Prefix Herbicide is a selective herbicide formulated as an emulsifiable concentrate (EC) used for the control or partial control of certain grass, broadleaf, and sedge weeds. It is specifically designed for use in soybeans and cotton. The active ingredients are S-metolachlor (46.4%) and Sodium Salt of Fomesafen (10.2%). It can be applied as a preplant surface, preplant incorporated, preemergence, or postemergence treatment in soybeans and cotton, as well as a post-directed treatment in cotton. When handling, users must wear personal protective equipment including long-sleeved shirts, long pants, chemical-resistant gloves (barrier laminate ≥ 14 mils or Viton™ ≥ 14 mils), plus socks, and protective eyewear (goggles, face shield, or safety glasses). Avoid application during temperature inversions or when wind speeds exceed 15 mph. The product is known to leach through soil into groundwater, so use caution in areas with permeable soils or shallow water tables. Note: Sale, use, and distribution is prohibited in Nassau and Suffolk Counties, New York.

Pests covered (2)
certain grasses, broadleaf, and sedge weedsBroadleaf Weeds, Grasses
Areas treatable (1)
soybeans and cotton

Application instructions from the label 1

soybeans and cotton

Can be applied as preplant surface, preplant incorporated, preemergence, or postemergence in soybeans and cotton; post-directed in cotton.

Target pest
certain grasses, broadleaf, and sedge weeds
Location
Both

Worker safety

Re-entry interval (REI) 24
PPE required Long-sleeved shirt and long pants; Chemical-resistant gloves made of barrier laminate ≥ 14 mils or Viton™ ≥ 14 mils; Shoes plus socks; Protective eyewear (goggles, face shield, or safety glasses).

Timing & weather

Use restrictions 4