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The instructor should provide information on the insects
and diseases that are common to the local area, the host species and control
measures for each problem pest. Control
emphasis should be on forest management practices rather than chemicals for long
range solutions to the pest problelms.
Briefly list the types of damage caused by tree pests.
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1. Growth loss |
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2. Mortality |
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3. Disruption of reproduction |
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4. Deformity/defect |
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5. Aesthetics |
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6. Nuisance or insignificant. |
Point out that a nuisance insect such as Cooley spruce gall aphid to the production of sawlogs can be a significant deformity problem in the production of Douglas-fir Christmas trees. Use other examples if this one doesn’t fit your area.
Cover the major insect and disease pests.
For example, mountain pine beetle and dwarf-mistletoe.
Answer to Quiz Question #7:
How many years does it take to complete the life cycle of dwarf mistletoe?
6 years
Answer to Quiz Question #8:
On what date should the mass flight of the
Mountain Pine Beetle occur? August 10th
Be sure to mention beneficial insects if there are
important ones. For example,
predator insects on mountain pine beetle.
Show several of the many books available on the subject of forest pests. Make up a list of reference materials and hand it out to students.