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PrecisionPac® PF-83-18 Herbicide / WEST / PRE-SEED

PrecisionPac® PF-83-18 herbicide delivers strong pre-seed burnoff plus extended residual weed control for growers farming coarse to medium soils with 1-3% organic matter.  Combining Groups 14 and 15, PF-83-18 herbicide is built to help manage tough grassy and broadleaf weeds while supporting herbicide layering and resistance management strategies across Western Canadian cropping systems. 

Carfentrazone-ethyl (14) provides fast control of emerged broadleaf weeds, while pyroxasulfone (15) delivers extended pre-emergent control or suppression of key weeds, including Japanese brome, downy brome, foxtail and wild oats.

Designed for pre-plant or pre-emergence applications, PF-83-18 herbicide helps create a cleaner start and provides strong early-season weed management ahead of chickpeas, field corn, field peas, lentils, soybeans, spring wheat and winter wheat (excluding durum).

Moisture is required to activate pyroxasulfone for extended soil activity.  For best performance, PF-83-18 herbicide should be applied to a firm, uniform seedbed and followed by approximately 0.5" of moisture for activation. 

Quick Facts

  • Group 14 (carfentrazone-ethyl) and 15 (pyroxasulfone)
  • Strong burnoff plus extended weed control or suppression
  • Built for coarse to medium soils with 1-3% organic matter
  • Requires 0.5" of moisture for activation of extended weed control
  • Pre-plant or pre-emergence application timing

Labels And SDS

4 Labels Available

Supporting Documents

Product Overview

PrecisionPac® PF-83-18 herbicide provides strong pre-seed burnoff plus extended pre-emergent control or suppression of key grassy and broadleaf weeds.  Built for coarse to medium soils with 1-3% organic matter, this Group 14 and 15 blend combines carfentrazone-ethly for control of emerged broadleaf weeds with pyroxasulfone for extended soil-active weed control. 

Crops


  • Alberta
  • Manitoba
  • Saskatchewan

Product Specifications

Tech Specs

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Chemical Group: 14 & 15

Registered & Supported Tank Mixes

  • Glyphosate
  • This product may be tank mixed with registered pest control products whose labels also allow tank-mixing, provided the entirety of both labels, including Directions for Use, Precautions, Restrictions, Environmental Precautions and Spray Buffer Zones are followed for each product.  In all cases, the most restrictive label directions must be followed.

Application Information:

  • Rates: 77.7 g/ac
    • Acres per grower bag:
      • Minimum: 50 acres
      • Maximum: 120 acres

Surfactant: Add a non-ionic surfactant (NIS) at 0.25% v/v (0.25 L per 100 L of spray solution), or Merge® adjuvant at 1% v/v (1 L per 100 L of spray solution)

Water Volume: Minimum 10 US gal/ac (40.5 L/ac)

Rates & Packaging:

  • 77.7 g/ac
  • Minimum grower bag: 50 acres
  • Maximum grower bag: 120 acres
  • Customized package sizing designed to help reduce waste and simplify handling

Mixing Instructions:

PF-83-18 herbicide is a water-dispersible granule intended for dilution with water.  For best results:

  • Fill the spray tank one-half full of clean water
  • Start agitation
  • Slowly add PF-83-18 herbicide.  FMC recommends to top load FMC dry herbicides
  • Let solution agitate for 5-10 minutes before adding glyphosate
  • Continue filling the spray tank to the desired level
  • Continuous agitation is required during mixing and application
  • For complete mixing instructions, follow WAMLEGS or refer to the product label

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