Brush Management with Foliar Herbicide Applications

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Brush Management with Foliar Herbicide
Applications
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Programs

• Selective (weed/brush)
• Krenite (side trim)

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Issues

• Brown-out
• Targeting
• Selectivity

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Brown-out

• Is this really an issue?
• Data from non-structured observations indicates
  that brown-out is not the concern it has been
  made out to be, particularly on limited access

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Do More Selective

• Longer work season
• Target brush, and problem dicot herbaceous
  species
• Facilitate conversion to grass groundcover,
  increasing selectivity of future applications

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Do More Selective

• Longer work season
• Target brush, and problem dicot herbaceous
  species
• Facilitate conversion to grass groundcover,
  increasing selectivity of future applications

7
Do More Selective

• Longer work season
• Target brush, and problem dicot herbaceous
  species
• Facilitate conversion to grass groundcover,
  increasing selectivity of future applications

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Is Selective Selective?

• Only on grass
• Most targets outside the mow line

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Krenite

• Side trim
• Limited translocation
• Holes in control spectrum
• Tougher on understory than Selective, kills
  grass too
• Rate effect due to pattern/terrain interaction

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Krenite Understory Damage
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Understory Damage

• Pattern not hitting target
• Fixed Pattern, Non-Fixed Target
• Actuating spray head not flexible enough

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Selectivity Through Placement
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Selectivity Through Placement
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Contracts

• Contracted equipment should include
• Fixed-pattern
• High volume handgun with hose reel
• Backpacks

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Towards a Summary

• Neither program particularly selective
• Either program can be selectively applied
• Selective program can also target problem
  herbaceous species

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Summary

• Selective for HWH
• Krenite in tight spaces
• Keep Selective off crownvetch
• Keep Krenite off everything but brush