A Test of Foliar-applied Systemic Insecticides to Prevent Damage to White Spruce Cones by Insects

Fogal, W. H.; Lopushanski, S. M.

doi:10.5558/tfc61499-6

Cited by 2 publications

(2 citation statements)

References 10 publications

(6 reference statements)

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“…Individual trees in an orchard can be sprayed with systemic insecticides (Fogal and Lopushanski 1985) but protecting large isolated plus trees poses a problem. Protection is possible by spraying such trees from a helicopter (Miller and Hutcheson 1981).…”

Section: Introductionmentioning

confidence: 99%

Stem Incorporation of Systemic Insecticides to Protect White Spruce Seed Trees

Fogal¹,

Lopushanski²

1989

The Forestry Chronicle

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White spruce trees were injected with a liquid formulation of dicrotophos (0.6 g Al/cm DBH) to evaluate the effect of injection times on cone and seed damage by insects. Injections of liquid formulations of dicrotophos (1.1 g Al/cm DBH) and oxydemetonmethyl (0.7 g Al/cm DBH) (approximately four days after the peak of flowering) were evaluated for control of defoliation and cone and seed damage by insects. Implants of a soluble powder formulation of acephate (0.5 and 1.0 g Al/cm DBH) (approximately two weeks after the peak of flowering) were evaluated for control of cone and seed damage. A single injection of dicrotophos reduced cone damage for up to four weeks after the peak of flowering by insects that oviposit and feed after pollination (seed moth, cone maggot, cone-axis midge, and seed inhabitants) whereas damage by insects that begin feeding before pollination was not reduced by single injections after pollination. Dicrotophos and oxydemetonmethyl reduced defoliation by spruce budworm at upper, middle, and lower crown levels for two seasons following injection. In the treatment year, these injections reduced the proportions of cones damaged by insects that feed after pollination whereas damage by insects that feed before pollination was not reduced; cone seed counts were increased 558% by dicrotophos and 267% by oxydemetonmethyl. In the season after injection the proportion of cones damaged by budworm was reduced by both insecticides while seed inhabitant damage was reduced by dicrotophos. Neither insecticide reduced damage by other insects; nonetheless, cone seed counts were increased 90% by dicrotophos and 115% by oxydemetonmethyl. In the year of treatment, implants of acephate reduced the proportions of cones damaged by seedmoth but not other insects whereas, in the season after implanting, they were effective against coneworm, seed moth, cone maggot, and seed inhabitants.

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Section: Introductionmentioning

confidence: 99%

Stem Incorporation of Systemic Insecticides to Protect White Spruce Seed Trees

Fogal¹,

Lopushanski²

1989

The Forestry Chronicle

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“…Systemic insecticides that are effective as sprays against at least one targeted pest include the following: dimethoate on Douglas-fir (Hedlin 1966;Summers and Miller 1986;Summers and Ruth 1987), black spruce (Haig and McPhee 1969;Prkvost et al 1988), white spruce (Hedlin 1973;Fogal and Lopushanski 1985), and tamarack (Arnirault and Brown 1986); oxydemeton-methyl on Douglas-fir (Hedlin 1966;Summers and Miller 1986) and white spruce (Hedlin 1973;Fogal and Lopushanski 1985); bidrin on Douglas-fir (Hedlin 1973); and methomyl (Fogal and Lopushanski 1985) and formothion (Hedlin 1973) on white spruce. Acephate gave inconsistent results on Douglasfir from year to year (Summers and Miller 1986).…”

Section: Eficacy Trialsmentioning

confidence: 99%

Status of cone and seed insect pest management in Canadian seed orchards

Groot¹,

Turgeon²,

Miller³

1994

The Forestry Chronicle

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Many of Canada's conifer seed orchards are entering their productive phase. In most, if not all seed orchards, insect pest management will be required in order to meet the seed production targets. Canadian seed orchard managers will soon need to know the basic requirements and what information is available to implement an insect pest management program. In this review, a synthesis is provided of the major components of an integrated pest management program for cone and seed insects. A list of the insect pests of conifer cones and seeds in Canada as well as features of their life cycles and population dynamics that could influence pest management strategies is presented. Current and future needs for insect damage appraisal and insect monitoring techniques are discussed. Finally, the various strategies and tactics to control insects are reviewed. Key words: conifer seed orchards, cone insects, seed insects, pest management strategies, integrated pest management

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A Test of Foliar-applied Systemic Insecticides to Prevent Damage to White Spruce Cones by Insects

Cited by 2 publications

References 10 publications

Stem Incorporation of Systemic Insecticides to Protect White Spruce Seed Trees

Stem Incorporation of Systemic Insecticides to Protect White Spruce Seed Trees

Status of cone and seed insect pest management in Canadian seed orchards

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