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Friday, July 31, 2020 | History

2 edition of Susceptibility of 10 spruce species and hybrids to the white pine weevil (Sitka spruce weevil) in the Pacific Northwest found in the catalog.

Susceptibility of 10 spruce species and hybrids to the white pine weevil (Sitka spruce weevil) in the Pacific Northwest

R. G. Mitchell

Susceptibility of 10 spruce species and hybrids to the white pine weevil (Sitka spruce weevil) in the Pacific Northwest

by R. G. Mitchell

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Published by U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station in Portland, Or .
Written in English

    Subjects:
  • White pine -- Diseases and pests -- Northwest, Pacific.

  • Edition Notes

    StatementR.G. Mitchell, N.E. Johnson, and K.H. Wright.
    SeriesUSDA Forest Service research note PNW -- 225.
    ContributionsWright, Kenneth H., Johnson, Norman E., Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    The Physical Object
    Pagination8 p. :
    ID Numbers
    Open LibraryOL16012281M

    White pine weevil: The white pine weevil can seriously impact the growth of young eastern white pine by causing the terminal leader to die back. The weevil can create stem deformation, increase the susceptibility to wood decay organisms, reduce growth andz increase tree mortality. Destructive damage caused by the white pine weevil (Pissodes strobi) to plantation Sitka spruce is the major deterrent to reforestation with this species in coastal British Columbia (MacSiurtain ; Alfaro , ). Planting is now limited to low weevil hazard areas on the Queen Charlotte Islands, North Vancouver Island, and the outer.

    Vol. 10, No. 1 PLATE 1. An adult white pine weevil, Pissodes strobi. Photograph by Rene´ Alfaro. FIG. 1. Outbreak of the white pine weevil in a white spruce family trial at Clearwater,Brit-ish Columbia, Canada. Weevil attack started in when the trees were 5 years old. , He and Alfaro ). Resistance varies widely. white pine weevil, Sitka spruce, resistance breeding program. Introduction and Background. White pine weevil (Pissodes strobi. Peck) is one of the most devastating pests of young spruce (Picea. spp.) and pines (Pinus. spp.) in North America. The weevil is a native insect that occurs across Canada and the northern United States. In eastern Author: John N. King, René I. Alfaro, Peter Ott, Lara vanAkker.

    ematics of young white pine growth throughout much of the tree’s range. Fig. 1. White pine wevil adult The Insect White pine weevil adults (Fig. 1) are one-quarter of an inch long and brown with distinct patches of whitish to reddish brown scales. The head is tapered anteriorly and the mouthparts occur at the end of a slender beak or snout.   Attacks by the white-pine weevil were observed on Virginia pine,Pinus virginiana, a species not previously reported as a host of the weevil. In a heavily infested white pine plantation, % of the naturally seeded Virginia pines were attacked. However, only % of the attacked trees supported successful broods which resulted in emergence of new adults from the by: 1.


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Susceptibility of 10 spruce species and hybrids to the white pine weevil (Sitka spruce weevil) in the Pacific Northwest by R. G. Mitchell Download PDF EPUB FB2

SUSCEPTIBILITY OF 10 SPRUCE SPECIES AND HYBRIDS TO THE WHITE PINE WEEVIL (=SITKA SPRUCE WEEVIL) IN THE PACIFIC NORTHWEST R. Mitchell, N. Johnson, and K. Wright ABSTRACT Ten different species and hybrids of spruce (Picea spp.) were studied on 3 plots for some 16 years to determine their growth rate.

Susceptibility of 10 spruce species and hybrids to the white pine weevil (=Sitka spruce weevil) in the Pacific Northwest. Portland, Or.: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, [] (OCoLC) Material Type: Government publication, National government publication: Document Type.

The white pine weevil (figure 1) - Pissodes strobi (Peck) (Coleoptera: Curculionidae) - is a native insect attacking eastern white pine (Pinus strobus L.).The latest cytogenetic and breeding studies indicate that two other North American pine weevil species - the Sitka spruce weevil and the Engelmann spruce weevil-also should be classified as Pissodes strobi.

Page 1 of 10 Forest Insect & Disease Leaflet 21 U.S. Department of Agriculture Forest Service White Pine Weevil Abdul Hamid 1, Thomas M. ODell 2, and Steven Katovich 3 1Abdul Hamid is research associate at the USDA Forest Service, Northeastern Forest Experiment Station, Hamden, Connecticut 2Tom ODell is research entomologist at the USDA Forest Service.

Pissodes strobi, known as the white pine weevil or Engelmann spruce weevil, is the primary weevil attacking and destroying white was described in by William Dandridge Peck, professor of natural history and botany at Harvard weevil is dark brown with white spots and is native to North America.

The eggs are laid inside a tree, usually white pine, Sitka Class: Insecta. spruces—like Lutz spruce (a natural hybrid of Sitka and white spruce)—seem to have an innate resistance to the weevil and only rarely suffer damaging infestations.

In the prairie provinces of Canada, white pine weevil is considered a serious pest of jack pine, red pine, and Scots pine, and an occasional pest of mugho pine. To our knowl-edge File Size: KB. Blue spruce white pine weevil has one generation per year. The larvae of white pine weevil are white, legless, and approximately inch long when fully grown.

Adults are brown, about inch long, and covered with white and tan scales, arranged in. Ten different species and hybrids of spruce (Picea spp.) were studied on 3 plots for some 16 years to determine their growth rate and susceptibility to the white pine weevil (Pissodes strobi.

Susceptibility of 10 spruce species and hybrids to the white pine weevil (=Sitka spruce weevil) in the Pacific Northwest. PNW U.S. Department of Agriculture Forest Service, Washington, D.C., 8pp.

World Wide Web Resources: format; Auth: or(s)/editor(s). Native to North America, the white pine weevil occurs throughout the range of white pine in eastern Canada. In western Canada, its distribution coincides with that of various species of spruce.

This insect was first described in by W. Peck, a professor at Harvard University. Micro-habitat(s) Bud, Twig, Terminal shoot. Damage, symptoms. White Pine Weevil. The white pine weevil is one of the most serious pests of white pine in the area.

Feeding damage rarely kills trees but can cause multiple leaders to develop on infested trees as the terminal leader is killed. Feeding injury can also stunt or distort trees.

Host Trees. Most seriously attacked: white pine, Norway spruce, and. White Pine Weevil Control Tips Attacks white pines, spruces More common in pure plantings Adults emerge in early spring when T > 50 F (as early as March in PA), Treat in early spring when adults emerge with borer pesticide Mechanically remove Shepard’s Crooks before August Size: 2MB.

The white pine weevil is considered the most destructive insect pest of eastern white pine in North America. This species kills the terminal leader primarily of eastern white pine.

Colorado blue, Norway, and Serbian spruces, Scots, red, pitch, jack, and Austrian pines, and occasionally Douglas-fir are also attacked. spruce to its main pest, the pine weevil Hylobius followed insect damage in two large progeny trials (52 open-pollinated families with – individuals per family and trial) naturally infested by the pine weevil.

Pine weevils dam-agedbetween 17and 48% ofthe plantedseedlingsdependingCited by: 7. The white pine weevil causes extensive damage to many types of evergreen trees.

It is also known as the Engelmann spruce weevil and the Sitka spruce weevil. Adult weevils are about 8 mm inches) long. These beetles are dark brown with white and tan patches on their backs. They have the characteristic and prominent hooked snout of the weevil. Although some aspects of the biology of the white pine weevil and its relation with environmental factors or forestry practices were studied in white pine (Sullivan I), sitka spruce (Alfaro.

chemotype to the white pine weevil, Pissodes strobi, Peck could be identified, the relative composition of monoterpenes between weevil-susceptible and apparently resistant trees were compared. In second-year foliage of trees from the university of B.C.

Research Forest, Maple Ridge, B.C., a-pinene and camphene levels. WHite Pine Weevil on Spruce. Asked August 1,AM EDT All of these symptoms sounded similar to that of the White Pine Weevil, according to Whitney Cranshaw's "Garden Insects" book and other sources.

We're wondering (1) should the tree be removed from the site or (2) what can we do to save it (3) is it possible that this pest could. Ying CC () Genetic resistance to the white pine weevil in Sitka spruce.

BC Minist For Res Note 1–17; Ying CC, Ebata T () Provenance variation in weevil attack in Sitka spruce. In RI Alfaro, G Kiss, RG Fraser, eds, The White Pine Weevil: Biology, Damage, and Management, Proceedings of a Meeting, JanuaryRichmond, British Cited by: February WHITE PINE WEEVIL ATTACK ON WHITE SPRUCE occurs when stands are years old (Alfaro and Omule ).

In this experiment, we believe the plan- tation is entering the high infestation period. Inretrospective surveys determined the num- ber of weevil attacks in each year during ,Cited by:. White pine weevil most commonly attacks eastern white pine, jack pine, and Norway spruce.

However, many other pines and spruces, including ornamentals, are also susceptible. One of the first symptoms of attack in the spring is the presence of pitch flowing from feeding punctures in the previous year's leading shoot.Hylobius abietis or the large pine weevil is a beetle belonging to family species is widely regarded as the most important pest of most commercially important coniferous trees in European plantations.

Seedlings planted or arising from natural regeneration (germinated seed-fall) after clear felling operations are especially at : Curculionidae.White pine weevil (Pissodes strobi, Peck.) is a native forest insect pest in the Pacific Northwest of North America that attacks species of spruce (Picea spp.) and pine (Pinus spp.).Young Sitka spruce [Picea sitchensis (Bong.)Carr.] trees are particularly susceptible to weevil attack.

Pockets of naturally occurring Sitka spruce resistance have been identified in high weevil hazard areas Cited by: 7.