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New Pest Response Guidelines - aphis - US Department of Agriculture

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Control Procedures<br />

Integrated <strong>Pest</strong> Management<br />

Integrated pest management approaches to manage and control established<br />

populations <strong>of</strong> pine-tree lappet have been suggested and described by<br />

Sierpinksa (Sierpinska, 1998). The goal <strong>of</strong> these programs is to establish a<br />

healthy forest ecosystem that will promote the existence <strong>of</strong> natural populations<br />

<strong>of</strong> insect parasitoids and predators, entomopathogenic microorganisms (fungi,<br />

bacteria and viruses), insectivorous birds and bat populations. Creating the<br />

environmental conditions that favor the existence <strong>of</strong> these biological control<br />

agents will greatly help in controlling pine-tree lappet populations and<br />

minimize the use <strong>of</strong> pesticides. An IPM program for Dendrolimus moths may<br />

include combinations <strong>of</strong> frequent monitoring (suggested at five to seven times/<br />

year in high risk areas), establishment <strong>of</strong> surveys to monitor economic<br />

thresholds, limiting impacts from human activities, use <strong>of</strong> light traps to reduce<br />

moth populations, and applying biological pesticides to reduce larval<br />

population levels (Chen, 1990). When possible, different pine species or mixed<br />

tree species are recommended in forestry programs. For example, short-term<br />

approaches in Vietnam focused on biological control, including mass<br />

production and application <strong>of</strong> microbial agents and parasitic insects.<br />

Recommended long-term strategies have included establishing mixed stands <strong>of</strong><br />

different pine species or pines and broad-leaved trees, or to replace pines with<br />

non-host species in high-hazard areas, increases in fire prevention, and<br />

enhanced training <strong>of</strong> protection personnel in all phases <strong>of</strong> integrated pest<br />

management (Billings, 1991).<br />

Summary<br />

The most effective control program for suppression <strong>of</strong> Dendrolimus moths will<br />

likely incorporate the use <strong>of</strong> chemical and biological control measures in an<br />

integrated pest management approach.<br />

If an established population is found in a coniferous forest production area, a<br />

science advisory panel will be asked to determine the best course <strong>of</strong> action. If<br />

eradication is not possible, as determined by the science advisory panel, it will<br />

be the responsibility <strong>of</strong> University extension services to determine the best<br />

management practices.<br />

12/2012-01 Dendrolimus Pine Moths 6-15

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