The Bugwood Network

The other "–icides"


Rodenticides

  • Coumarin (Warfarin and Ratoxin)
    • Primary target rats and mice
    • Anticoagulant
    • Require repeated feeding to work
    • Broad spectrum – can affect cats, dogs and people – care must be taken to preclude exposure of non-target species
    • Degrade is slow in the environment
    • Generally in bait stations or other self-contained medium so, despite persistence, environmental contamination is improbable
  • Brodifacoum (Talon & d-con)
    • Primary target rats and mice
    • Anticoagulant
    • Requires only a single feeding to work
    • Broad spectrum – can affect cats, dogs and people – care must be taken to preclude exposure of non-target species
    • Degrade is slow in the environment
    • Generally in bait stations or other self-contained medium so, despite persistence, environmental contamination is improbable
  • Chlorophacinone (Rozol)
    • Not targeted specifically for rats & mice
    • Anticoagulant
    • Requires only a single feeding to work
    • Broad spectrum – can affect cats, dogs and people – care must be taken to preclude exposure of non-target species
    • Degrade is slow in the environment
    • Generally in bait stations or other self-contained medium so, despite persistence, environmental contamination is improbable

Rodenticide, Predacide, & Avicide

  • Strychnine (natural alkaloid extracted from Strychnos nux vomica)
    • Used in FS western regions to control plague vectors
    • Requires only a single feeding to work
    • Broad spectrum – can affect many non-target species – care must be taken to preclude exposure of non-target species
    • Degrade is slow in the environment
    • Generally in bait stations or other self-contained medium so, despite persistence, environmental contamination is improbable
    • RESTRICTED-USE – may be legally applied only by certified professionals

Molluscicides & Avicide

  • None currently in use in forestry
    • Slug control (molluscicide) or bird control
  • Methiocarb (Mesurol)
    • Has some insecticidal capacity also
    • Slow degrade

Animal Repellants

  • Thiram
    • Effective rodent repellant
    • Only one known to have been used by the FS in the southeast
    • Use rare – generally associated with rabbit dispersal in regeneration areas
  • Complex polysaccharide mix (Ro-Pel)
    • Effective against birds, rodents and mammals
    • Low impact on target species
    • Low negative impacts on non-targets
    • Relatively rapid and complete degrade
  • Putrescent egg solids (BGR [Big Game Repellant])
    • Effective at preventing grazing by deer and elk
  • Bloodmeal (Plantskyyd)
    • Deer, rabbit and elk are specifically noted – regeneration, primary used as a protectant of the seedlings
    • Bloodmeal and putrescent egg solids are on the EPA list of minimum risk pesticides
  • Capsacian (various Hot Sauce…; Active ingredient derived from tobasco peppers)
    • Effective against many large mammals

Fungicide and Rodent Repellant

  • Thiram
    • Used primarily in nurseries to prevent needle diseases and also to dissuade rodent feeding on seedlings

Fungicides

  • Borax (Sporax)
    • Primary use is to prevent colonization of pine stumps by Heterobasidion annosum, cause of annosus root disease
    • Little activity against non-targets other than other fungi
    • Barrier or preventive only, not therapeutic if infection already exists
  • Captan and Ferbam
    • Used primarily in nurseries to prevent damping-off of seedlings (root and root collar fungal attack)
    • Sometimes ferbam is used over-the-top on seedlings as a preventive treatment against fusiform rust infection
  • Triadimefon (Bayleton)
    • Used in nurseries to prevent needle blights
    • Primary use in the Southeast has been to prevent fusiform rust infection of pine seedlings
    • Also used as an additive in root dip slurries to confer anti-rust protection to pine seedlings being outplanted
  • Propaconizole (Alamo)
    • Primarily used as a therapeutant for trees affected by oak wilt
    • Application is by injectioin which can cause damage to the tree
    • About a 75% effectiveness on treated trees, but only effective against current infection, no prevention/protectant benefit
  • Phlebia gigantea
    • Fungus effective in reducing the future effect of annosus root rot in stands infected by Heterobasidion annosum prior to harvest
    • NOT REGISTERED
    • Previously used under permissive 1970’s letter from the EPA as an augmentive treatment (Pg is common in the woods)
    • Letter revoked in late 1990s and only low probability of registration
  • Copper sulfate (Bordeaux Mixture & others)
    • Oldest of the fungicides, this classic is effective against many mildews and other needle blights
    • Use in nurseries has been relatively minor
  • Benomyl (Benlate)
    • Used in nurseries as a seedling protectant
    • Last of the forestry registrations for this product were cancelled in 2001
    • May use existing stocks, but no new product will become available

Piscicide

  • Rotenone
    • Previously discussed
    • See… Rotenone in the aquatic pesticide section

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The University of Georgia - Warnell School of Forestry and Natural Resources and
College of Agricultural and Environmental Sciences - Dept. of Entomology
Last updated on Wednesday, November 06, 2002 at 03:13 PM
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