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Safe and Effective Use of Herbicides for Melaleuca Control. Ken Langeland UF/IFAS Agronomy Department Center for Aquatic and Invasive Plants. Safety Personal protection Environmental Non-target vegetation Wildlife. Effectiveness Application technique Herbicide selection. Eye protection.

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safe and effective use of herbicides for melaleuca control

Safe and Effective Use of Herbicides for Melaleuca Control

Ken Langeland

UF/IFAS Agronomy Department

Center for Aquatic and Invasive Plants

slide2
Safety

Personal protection

Environmental

Non-target vegetation

Wildlife

Effectiveness

Application technique

Herbicide selection

personal protection equipment

Eye protection

Personal Protection Equipment

Long sleeves

Chemical resistant gloves

Follow label PPE instructions!

slide4

Hack and Squirt

Methods

Of

Application

Foliar

Cut Stump

slide5

Herbicides Used for Melaleuca Control

Active Ingredient

Brand Name(s)

Application Method

slide6

Woody Stems

Bark

Inactive xylem

Cambium and phloem

Active xylem

cut stump applications
Cut Stump Applications
  • Cut as close to ground as possible
  • If possible cut stumps level!
  • Concentrate herbicide just inside bark
  • Treat entire circumference
  • Use dyes to keep track of what’s been treated
  • Treat within 15 minutes of cut
hack and squirt
Hack and Squirt
  • Cut all the way around stem
  • Cut all the way in to cambium
  • Apply herbicide to exposed cambium
  • Use dyes
  • Treat within 15 minutes of cut
foliar application
Foliar Application
  • Mature leaves very leathery
  • Most herbicides will not penetrate
  • Surfactants very important
slide10

Acute Toxicity

The lower the number, the higher the toxicity (i.e., it takes a smaller amount to cause toxicity)

slide12

Current Control

    • Aerial w/ 3qt Arsenal + 3qt Rodeo + 4 MSO
    • Girdle w/ 25% Arsenal + 25% Rodeo, 50% Arsenal
    • Cut-stump w/ 25% Arsenal
slide13

Aerial Herbicide Applications to Melaleuca at TAME Demonstration Sites

Estimated percent control

conclusions
Conclusions
  • Roundup SC best homeowner recommendation
  • Brush-B-Gon, Brush Killer provide adequate control for homeowners
  • Arsenal (>25%) provides most consistent results
  • To minimize non-target damage
    • Cut close to ground and level
    • Apply 50-100% Rundup solution
    • Put enough (?) on
  • Cost comparison (per gallon)
    • Arsenal $260
    • Garlon 3A $65
    • Roundup $20
    • Rodeo $40