Control of a Spruce Budworm Outbreak in Quebec through Aerial Spraying Operations

1963 ◽  
Vol 95 (8) ◽  
pp. 821-827 ◽  
Author(s):  
J. R. Blais
Keyword(s):  
Spruce Budworm ◽  
Combined Effects ◽  
Natural Control ◽  
Aerial Application ◽  
Infested Area ◽  
Chemical Treatments ◽  
Control Factors ◽  
Outbreak Area ◽  
Aerial Spraying

AbstractAn attempt was made to suppress an incipient spruce budworm outbreak in the Lower St. Lawrence region of Quebec through the aerial application of DDT. Operations began in 1960 and continued in 1961 and 1962 when they finally met with success. Failure to achieve success earlier was due partly to the exceptionally favourable survival conditions for the insect in 1960, and partly to the inadvertent omission of a small infested area from the program in 1961. The operations greatly reduced spruce budworm populations each year in the outbreak area, while the action of natural control factors, including parasites and predators increased. The collapse of the outbreak was the result of the combined effects of the chemical treatments and of natural control factors.

INTERACTION OF EVENING GROSBEAK (HESPERIPHONA VESPERTINA) AND SPRUCE BUDWORM (CHORISTONEURA FUMIFERANA (CLEM.)) IN A LOCALIZED BUDWORM OUTBREAK TREATED WITH DDT IN QUEBEC

1964 ◽  
Vol 42 (6) ◽  
pp. 1017-1024 ◽  
Author(s):  
J. R. Blais ◽  
G. H. Parks
Keyword(s):  
Chemical Treatment ◽  
Critical Period ◽  
Direct Evidence ◽  
Choristoneura Fumiferana ◽  
Spruce Budworm ◽  
Combined Effects ◽  
Natural Control ◽  
Control Factors ◽  
Outbreak Area ◽  
Large Numbers

Control of a localized spruce budworm outbreak in southeastern Quebec was achieved through the combined effects of chemical treatment with DDT and natural control factors. Amongst the latter, predation by evening grosbeaks was suspected to have been of considerable importance. It appears that the birds were attracted to the outbreak area in unusually large numbers during their spring migration. The yearly influx of the grosbeaks in the area occurred when the budworm was in the late larval and the pupal stages, an especially critical period with respect to generation survival of this insect. In 1963, the year following collapse of the outbreak, very few grosbeaks were seen in the area. There was no direct evidence that the birds suffered ill effects from the spraying operation.

scholarly journals A RECENT SPRUCE BUDWORM OUTBREAK IN THE LOWER ST. LAWRENCE AND GASPE PENINSULA WITH REFERENCE TO AERIAL SPRAYING OPERATIONS

1960 ◽  
Vol 36 (3) ◽  
pp. 209-224 ◽  
Author(s):  
J. R. Blais ◽  
R. Martineau
Keyword(s):  
Spruce Budworm ◽  
Balsam Fir ◽  
Spray Application ◽  
Natural Control ◽  
Insect Abundance ◽  
Factors Associated ◽  
Control Factors ◽  
Aerial Spraying ◽  
Eventual Collapse ◽  
Gaspe Peninsula

The main topics discussed in this paper are: the progress of the spruce budworm outbreak in the Lower St. Lawrence - Gaspé regions from 1949 to 1956; the areas sprayed between 1954 and 1958; timing of spray application in relation to insect abundance and development; effects of treatment on spruce budworm populations and on defoliation of balsam fir; results of aerial defoliation surveys and egg surveys; estimated amounts of wood destroyed by the insect, and losses averted through spraying; the various natural control factors associated with the decline and the eventual collapse of the outbreak.

NOTES ON THE INSECT PARASITES OF THE SPRUCE BUDWORMCHORISTONEURA FUMIFERANA (CLEM.) IN BRITISH COLUMBIA

1948 ◽  
Vol 80 (1-12) ◽  
pp. 138-155 ◽  
Author(s):  
A. Wilkes ◽  
H. C. Coppel ◽  
W. G. Mathers
Keyword(s):  
British Columbia ◽  
Insect Pests ◽  
Spruce Budworm ◽  
Good Deal ◽  
Natural Control ◽  
Forest Insect ◽  
General Account ◽  
Control Factors ◽  
Insect Parasites

The spruce budworm, Choristoneura (Archips) fumiferana (Clem.) (Tortricidae) has long been considered one of the most injurious forest insect pests in Canada. A general account of past outbreaks and an outline of its biology and bahits are given by Swaine and Craighead (1924). At the time these studies were made investigations were also undertaken by J.D. Tothill and A.B. Baird on the parasites and other natural control factors of the spruce budworm, but although a good deal of work was done, brief reference to which is made by Hewitt (1911, 1912, 1913), very little has been published.

Natural Control Factors Affecting the Spruce Budworm in the Adirondacks During 1946–19481

1950 ◽  
Vol 43 (6) ◽  
pp. 774-783 ◽  
Author(s):  
Philip B. Dowden ◽  
V. M. Carolin ◽  
C. O. Dirks
Keyword(s):  
Spruce Budworm ◽  
Natural Control ◽  
Factors Affecting ◽  
Control Factors

Natural-Control Factors Affecting the Spruce Budworm

1948 ◽  
Vol 41 (3) ◽  
pp. 457-464 ◽  
Author(s):  
Philip B. Dowden ◽  
W. D. Buchanan ◽  
V. M. Carolin
Keyword(s):  
Spruce Budworm ◽  
Natural Control ◽  
Factors Affecting ◽  
Control Factors

scholarly journals Aerial spraying of bacterial insecticides to control spruce budworm defoliation leads to reduced carbon losses

Ecosphere ◽  
2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Zelin Liu ◽  
Changhui Peng ◽  
Louis De Grandpré ◽  
Jean‐Noël Candau ◽  
Timothy Work ◽  
...  
Keyword(s):  
Spruce Budworm ◽  
Aerial Spraying ◽  
Carbon Losses

NATURAL CONTROL OF THE GREY BANDED LEAF ROLLER EULIA MARIANA FERN, IN NOVA SCOTIA ORCHARDS

1937 ◽  
Vol 69 (7) ◽  
pp. 145-146
Author(s):  
F. C. Gilliatt
Keyword(s):  
Nova Scotia ◽  
Natural Control ◽  
Leaf Roller ◽  
Control Factors ◽  
Annapolis Valley ◽  
Orchard Pests

Eulia mariana Fern. was identified in Annapolis Valley orchards about twelve years ago and since has become one of the major orchard pests. Although outbreaks continue to occur, fruit growers should fully appreciate the value of natural control, which in one form or another is always assisting in keeping this insect in check. The various natural control factors may be recorded as follows:(1) Mortality of pupae. (2) Parasites of larvae and pupae. (3) Parasites of eggs. (4) Predators.

Aerial Application of Bt Against Spruce Budworm: 1982 Bt Cooperative Field Tests—Combined Summary1

1984 ◽  
Vol 77 (4) ◽  
pp. 999-1003 ◽  
Author(s):  
F. B. Lewis ◽  
G. S. Walton ◽  
J. B. Dimond ◽  
O. N. Morris ◽  
B. Parker ◽  
...  
Keyword(s):  
Field Tests ◽  
Spruce Budworm ◽  
Aerial Application

THE DEVELOPMENT OF LIFE TABLES FOR THE SPRUCE BUDWORM

1954 ◽  
Vol 32 (4) ◽  
pp. 283-301 ◽  
Author(s):  
R. F. Morris ◽  
C. A. Miller
Keyword(s):  
Human Life ◽  
Spruce Budworm ◽  
Life Tables ◽  
Control Measures ◽  
Permanent Plots ◽  
Mortality Factors ◽  
Green River ◽  
Population Sampling ◽  
Control Factors ◽  
Fundamental Information

A method for preparing life tables is described and two examples are presented, based on field data from the Green River Watershed in northwestern New Brunswick. Column headings for age interval (x), survivorship (lx), deaths (dx), and death rate (qx) are adopted from human life tables. An additional column, dx factor, should be added to insect life tables so that the different mortality factors can be tabulated. Life tables for the spruce budworm are based on intensive population sampling on permanent plots, complemented by data on fecundity, natural and applied control factors, and dispersion. Techniques for these basic studies will be detailed in subsequent papers. Life tables for consecutive generations of the budworm in different forest types should provide fundamental information on the epidemiology of the species and on the possible reduction of damage through forest management and through direct control measures.

Protecting the Forests of New Brunswick Against "The Insect" – An Overview

1985 ◽  
Vol 61 (5) ◽  
pp. 382-384 ◽  
Author(s):  
D. D. Lockhart
Keyword(s):  
New Brunswick ◽  
Spruce Budworm ◽  
Forest Products ◽  
Pulp And Paper ◽  
Forest Products Industry ◽  
Industrial Base ◽  
Paper Company ◽  
Aerial Spraying

In 1951, one pulp and paper company and the New Brunswick Government decided to try to prevent or at least lessen losses from the spruce budworm by aerial spraying of insecticide. Today, 33 years later, protection is still carried out, not with any thought to eradicating the pest, but rather to maintain the industrial base and the resulting employment. Without this protection, the forest products industry in New Brunswick would have suffered many mill closures – a catastrophe in a province where one job in seven depends on a healthy forest products industry.

Sign in / Sign up

Export Citation Format

Share Document