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Sunday, July 12, 2020 | History

1 edition of Douglas-fir tussock moth handbook found in the catalog.

Douglas-fir tussock moth handbook

Douglas-fir tussock moth handbook

techniques for monitoring the effects of insecticides on forest fauna

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  • 37 Currently reading

Published by U.S. Dept. of Agriculture in [Washington, D.C.?] .
Written in English

    Subjects:
  • Douglas fir tussock moth -- Control,
  • Insecticides -- Testing

  • Edition Notes

    Other titlesTechniques for monitoring the effects of insecticides on forest fauna
    SeriesAgriculture handbook -- no. 602, Agriculture handbook (United States. Dept. of Agriculture) -- no. 602
    ContributionsUnited States. Dept. of Agriculture, Combined Forest Pest Research and Development Program (U.S.)
    The Physical Object
    Pagination25, [3] p. :
    Number of Pages25
    ID Numbers
    Open LibraryOL14838987M

    Treatment Options for Douglas-Fir Tussock Moth About Douglas-fir Tussock Moth Douglas-fir tussock moth (Orgyia pseudotsugata) is a defoliator of Douglas-fir, true fir (Abies spp.) and spruce (Engelmann and Colorado blue) trees. Native to Colorado’s forests, the insect also may impact Colorado blue spruce in urban settings. Tussock Moth Control Tussock moth control is an important component of any property owner in urban Colorado. The Douglas Fir tussock moth is a common pest in Colorado. The Tussock moth caterpillar (Orgyia psuedotsugata) eat the needles of spruce, Douglas fir, and true fir trees. These caterpillars cause defoliation, which occurs rapidly from.

    The caterpillars of the Douglas-fir Tussock moth chew on the needles of spruces, douglas fir, and true firs. The young caterpillars have long black/grey hair turning brightly colored as they mature. A mature larva is inches long with a grayish brown body and a black head. The moth spends the winter as an egg within an egg mass. Douglas-fir, white fir, and grand fir are all equally acceptable. In the south (California, Nevada, Arizona, and Figure 1. -- Distrubution of host type where Douglas-fir tussock moth may be found and location of outbreaks. trees, brush, and buildings, but once an outbreak subsides, finding caterpil-lars is difficult. Defoliation by the tussock moth.

    The Douglas-fir tussock moth (Orgyia pseudotsugata McDunnough) defoliated Douglas-fir (Pseudotsuga menziesii var glauca [Beissn.] Franco), in British Columbia from to Douglas-fir Tussock Moth Control by the Homeowner The Douglas-fir tussock moth, Orgyia pseuclot-sugata, is one of the most injurious insect pests of Douglas-fir and true firs found in the West. Out-breaks may develop explosively and when they do, the caterpillars will attack less preferred species such as pine, larch, spruce, and other species.


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Douglas-fir tussock moth handbook Download PDF EPUB FB2

The Douglas-fir tussock moth (Orgyia pseudotsugata) is a moth of the subfamily Lymantriinae found in western North America. Its population periodically irrupts in cyclical charlesrosier.com caterpillars feed on the needles of Douglas fir, true fir, and spruce in summer, and Family: Erebidae.

Get this from a library. Douglas-fir tussock moth handbook: rearing the Douglas-fir tussock moth. [Clarence G Thompson; Linda J Peterson; United States. Department of Agriculture.]. Get this from a library. Douglas-fir tussock moth handbook: larval instars of the Douglas-fir tussock moth.

[R C Beckwith; United States. Department of Agriculture.]. Includes. Douglas-fir tussock moth (Orgyia pseudotsugata) Rusty tussock moth (Orgyia antiqua nova).

Pest description and crop damage Caterpillars with tufts (tussocks) of hair. Larvae may be found in large numbers under webbing on branches. Protecting ornamental and shade trees (Douglas-fir tussock moth handbook) [James P Linnane] on charlesrosier.com *FREE* shipping on qualifying charlesrosier.com: James P Linnane.

Orgyia pseudotsugata. Pest description and crop damage The adult moth flies during the day and is brown to gray, about 1 inch across. Mature larvae are about an inch long, hairy, gray or light brown, with black heads.

They are distinguished by three long tufts of black hairs on their body (two in front, one in back) and lighter tufts along their back. Douglas-fir tussock moth (Orgyia pseudotsugata) is a native defoliator of spruce, Douglas-fir (Pseudotsuga menziesii) and true firs (Abies spp.), though will rarely feed on planted Colorado blue spruce in urban charlesrosier.com moth is a native species found throughout mixed-conifer forests in the western United States and southern British Columbia.

Hosts: Douglas-fir, white fir and spruce Figure 8. Adult male (left) and femail (right) Douglas-fir moth. Symptoms/Signs: The caterpillar of the Douglas-fir tussock moth is grayish with brightly colored tufts of hair and a shiny black charlesrosier.com are also two long horns of black hairs behind the head and another at the rear of the body.

The Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), is an important defoliator of spruce, Douglas-fir, true fir and other conifers in the Rocky Mountain region. Feeding by the larvae can cause complete defoliation of heavily infested trees.

Damage usually appears first in the tops of trees and progresses downward, sometimes over several years. Jul 12,  · The caterpillar of the Douglas-Fir Tussock Moth (Orgyia pseudotsugata) feeds on firs, spruce, Douglas-firs, and other evergreens of the western United States and are a major cause of their defoliation.

Young caterpillars feed exclusively on new growth. Surviving stands are invariably in a weakened state, and very susceptible to other insects (such as the Douglas-Fir Beetle) and charlesrosier.comonally, about 20% of people and animals are allergic to Douglas-Fir Tussock Moth hairs.

These hairs are present on the larvae, the cast larval skins, the egg masses, the cocoons, and the female moth. Lymantria means "defiler", and several species are important defoliators of forest trees, including the gypsy moth Lymantria dispar, the douglas-fir tussock moth Orgyia pseudotsugata, and the nun moth Lymantria monacha.

They tend to have broader host plant ranges than most charlesrosier.com: Insecta. FOR MANAGING DOUGLAS-FIR TUSSOCK MOTH IN CONIFER HOST FORESTS-- QUESTIONS AND ANSWERS-What is the Douglas-fir tussock moth virus.

Wild populations of the Douglas-fir tussock moth have several naturally-occurring diseases that cause mortality to certain life stages of the insect during the course of an outbreak. The agents. The Douglas-fir tussock moth management system. () AH Rating the risk of tussock moth defoliation using aerial photographs.

() AH U.S. inspected meat and poultry packing plants: a guide to construction and layout. () AH Douglas-fir Tussock Moth Orgyia pseudotsugata Key Wildlife Value: The Douglas-fir tussock moth creates snags and down wood by severely defoliating and causing the death of all sizes of true fir and Douglas-fir trees.

It also interacts with other disturbance agents, especially bark beetles, to. Larval Instars of the Douglas-fir Tussock Moth Volume of (United States Department of Agriculture. Agriculture handbook) Issue of Agriculture handbook Douglas-fir tussock moth handbook: Author: R.

Beckwith: Publisher: U.S. Department of Agriculture, Combined Forest Pest Research and Development Program, Original from: the.

The Douglas-fir tussock moth is a destructive native defoliator of Douglas-fir. Outbreaks of tussock moth occur every ten to twelve years causing significant damage and mortality to Douglas-fir stands in the interior of the province.

These outbreaks tend to last up to four years before natural controls such as predators, parasites, pathogens. How Does the Douglas-fir Tussock Moth Kill Trees. Douglas-fir tussock moths are defoliators—they eat the leaves off of plants. More precisely, immature caterpillars climb to the top of the tree or building where they hatched, spin a silk web to sail on, float on the wind until they land, and eat any leaves they can find.

Tussock Moth & Spruce Budworm. Posted on February 28, by MountainHighTreeSprings. Douglas-Fir Tussock Moth (Orgyia pseudotsugata) and Spruce Budworm (Choristoneura hebenstreitella) Populations of these two defoliating caterpillars continue to expand this year in the Colorado Springs area.

Blue Spruce, Douglas Fir and White Fir are hosts to. Oct 01,  · The Douglas-fir tussock moth is a native defoliator of Douglas-fir, true firs (such as grand fir) and spruce.

For reasons unknown, a year or two prior to an outbreak of Douglas-fir tussock moth on forested land, we tend to see defoliation of ornamental trees such as blue spruce. Given the number and area of defoliated blue spruce I have been.

Jun 14,  · The moth book;: A popular guide to a knowledge of the moths of North America, (The nature library) How to identify tussock moths caught in pheromone traps (Douglas-fir tussock moth handbook) by Gary E Daterman | 1 Jan Unknown Binding Currently unavailable.Douglas-fircan cause problems because the larval hairs tussockMovement of Douglas-fir tussock moth into moth during outbreaks.

©Colorado State University Extension. 3/ Revised 7/ charlesrosier.com Caterpillars of the Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), chew the needles of spruces, Douglas fir and true firs.THE DOUGLAS-FIR TUSSOCK MOTH The Problem, Alternatives, and Impacts In June of severe defoliation of fir forests was observed north of La Grande, Oregon.

Surveys were initiated by the U.S. Forest Service and Oregon and Washington state forestry agencies. It was soon ap.