Use 2-4 fl oz of Tordon per gallon of water for most applications

Mix 2-4 fluid ounces of Tordon 22K or Tordon RTU per gallon of water for woody plant control. Rates vary by target species: 2 oz for light brush, 4 oz for tough stumps. Always follow label instructions for safety and efficacy. Spot treatments require lower concentrations than basal bark applications.

Recommended Mixing Ratios by Application

Application Type Tordon 22K (fl oz/gallon) Tordon RTU (fl oz/gallon) Best For
Foliar Spray 2-3 3-4 Young woody plants, vines, and broadleaf weeds
Cut Stump Treatment 4 (undiluted) N/A Freshly cut stumps (apply directly)
Basal Bark Spray 4 + oil carrier N/A Bark treatment for thick-barked trees

Key Factors Affecting Dosage

  • Target Plant Size: Larger or mature plants require higher concentrations (up to 4 oz/gallon).
  • Plant Type: Hardwoods (e.g., oak) need more herbicide than softwoods (e.g., pine).
  • Water Quality: Hard water may reduce efficacy; use soft or distilled water if possible.
  • Additives: For basal bark treatments, mix with diesel oil or basal oil (e.g., 25% Tordon + 75% oil).

Step-by-Step Mixing Instructions

  1. Calculate Total Volume: Determine gallons needed (e.g., 5 gallons for 1 acre of spot treatment).
  2. Add Water First: Fill sprayer halfway with water to prevent foaming.
  3. Measure Tordon: Use a graduated cylinder for accuracy (e.g., 10 oz for 5 gallons at 2 oz/gallon).
  4. Mix Thoroughly: Agitate the sprayer for 1-2 minutes to ensure uniform distribution.
  5. Add Surfactant (if needed): Include 0.25-0.5% non-ionic surfactant for foliar applications.

Safety and Environmental Precautions

  • Avoid Drift: Apply in calm weather (wind < 5 mph) to prevent damage to non-target plants.
  • Protective Gear: Wear gloves, goggles, and long sleeves during mixing/applying.
  • Soil Sensitivity: Tordon persists in soil; avoid areas near crops or water sources.
  • Storage: Store mixed solution in a cool, dark place and use within 24 hours.

Common Mistakes to Avoid

  • Overdosing: Exceeding 4 oz/gallon wastes product and increases environmental risk.
  • Under-mixing: Uneven distribution causes patchy control or plant regrowth.
  • Wrong Timing: Apply during active growth (spring/early summer) for best results.
  • Ignoring Label: Some species (e.g., grasses) are resistant; check compatibility first.