Mail:   Phone: 1-360-276-8211 x7001

Pest Management

Quinault Pest Management Program

Quinault Pest Management Program | Quinault Silviculture Program
Pest infested tree caused by invasive species

The goal of the Quinault Pest Management Program is to use all appropriate tools and tactics to prevent economically important pest damage without disrupting the environment on Quinault Indian Nation lands. Information gathering and decision making are used to design and carry out a combination of measures for managing pest problems. Integrated Pest Management (IPM) is the best approach to manage pests of trees.

An understanding of pest identification and biology, along with good forest management practices, are key elements in preventing or reducing losses to pests. Use of a combination of methods in an IPM program provides a sound approach to the forest health of the Quinault Indian Nation.

Quinault Pest Management Program Practices

Pest monitoring should be a part of a complete forest management plan. It can allow early finding and accurate assessment of infestations. In many cases, sound long-term production practices can minimize the need for pesticide applications. When pest outbreaks occur, suitable management alternatives will vary with the specific pest, or pest complex, and will consider damage potential, control costs and benefits, and legal, environmental, and social factors.

Quinault Pest Management Program | Quinault Silviculture Program
Trees and forests are subject to a wide variety of pests and diseases

All parts of a tree, roots, stems, foliage, shoots and terminal leaders are vulnerable to attack by pests. Pest damage can range from slight damage that has no effect on the value of the harvested product to severe damage that stunts or kills the trees or reduces their market value. Tree pests include insects and mites, diseases, weeds, vertebrates, and nematodes. Managing tree pests effectively should be based on thorough consideration of ecological and economic factors. The pest, its biology, and the type of damage are some of the factors that determine which control strategies and methods, if any, should be used.

Interest in protecting forests from insect, disease, weed and vertebrate pests has increased in recent years. This has come about largely because of:

  • Increased awareness of the destructive capacities of pests
  • The heavy toll they take on supplies of commercial and recreational timber
  • Environmental concerns
  • Effects on threatened and endangered species
  • Availability of new, specific pesticides

The Quinault Pest Management Program has come to realize that much of the damage caused by pests could have been avoided. With sufficient knowledge of pest identification and biology, combined with good forestry management practices, it may be possible to avert or at least reduce losses due to pests. Trees in a vigorous condition are much better able to withstand damage by pests than trees already under stress.

Quinault Pest Management Effects

Quinault Pest Management Program | Quinault Silviculture Program
The Douglas Fir Tussock Moth is an invasive species on QIN lands

Before making management decisions, the Quinault Pest Management Program evaluates potential pest effects within the context of the ecosystem in which the organism occurs, as well as the population dynamics of the organism. Most trees can withstand complete one-time defoliation without significant long-term impact on tree health. However, an organism that has the potential to cause multiple defoliations can have a much more detrimental impact on tree and forest health.

Insects and diseases claim more timber each year than any other forest menace. Some of this loss is a natural part of the forest’s natural cycle; however, forest health can decline if this natural cycle is thrown out of balance. The Quinault Pest Management Program values and relies on our forests for a wide variety of resources that can be threatened by forest pests, and therefore it is important to monitor forest health and intercede when those resources are at risk. Proper forest management, early detection, and protective measures can prevent or reduce the effects of insect and disease problems while we use more intensive management and control options that are available when required.

Forestry Manager, Jim Plampin  »  360.276.8215 x7290

Special Projects Forester, David Ryan  »  360.276.8215 x7131

Silviculturist, Jimmy Hargrove, Jr  »  360.276.8215 x7621

Additional Quinault Pest Management Resources:

Quinault 2017 Forest Management Plan

Quinault Environment Protection Department

U.S. Forest Service – Invasive Species, Pests and Disease

Washington DNR – Forest Health Program

Quinault Tree Improvement Program

Quinault Stand Improvement Program