Pest Management: Experience in Six British Columbia Apple Orchards

Madsen, Harold F.; Peters, H. F.; Vakenti, Jerry M.

doi:10.4039/ent107873-8

Cited by 21 publications

(23 citation statements)

References 9 publications

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“…Traps in suspected sources have been used to reduce immigration of codling moths (Madsen et al 1975) and the same procedure may be successful for leafrollers. rosanus can be used to estimate populations.…”

Section: Resultsmentioning

confidence: 99%

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SEX PHEROMONE OF THE EASTERN SPRUCE BUDWORM (LEPIDOPTERA: TORTRICIDAE): OPTIMUM BLEND OF TRANS- AND CIS-11-TETRADECENAL

Sanders

Weatherston

1976

Can Entomol

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Can. Ent. 108: 1281-1284(1976) The sex pheromones of Archips argyrospilus (Walker) and Archips rosanus (L.) were field evaluated to determine if they could be used to monitor populations in orchards where pest management programs were applied. Traps baited with the sex pheromones of A . argyrospilus caught males which reflected population levels estimated by other sample methods. Traps baited with the sex pheromones of A. rosanus caught high numbers of males but the numbers did not correlate with other population estimates. A. rosanus has a wide host range, and trap data indicate that males were attracted from sources outside the monitored orchards. Results indicated that the sex pheromones of A. argyrospilus could be used to estimate populations but with A. rosanus further studies on trap placement are necessary to minimize male influx.

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Section: Resultsmentioning

confidence: 99%

“…In early June, larval estimates were obtained by examining 100 clusters per spray plot for the presence of living larvae, a method described by Madsen et al (1975). In early June, larval estimates were obtained by examining 100 clusters per spray plot for the presence of living larvae, a method described by Madsen et al (1975).…”

Section: November 1976mentioning

confidence: 99%

SEX PHEROMONE OF THE EASTERN SPRUCE BUDWORM (LEPIDOPTERA: TORTRICIDAE): OPTIMUM BLEND OF TRANS- AND CIS-11-TETRADECENAL

Sanders

Weatherston

1976

Can Entomol

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“…The most commonly accepted EIL for A. pomi is 50 % of tree terminals infested (Madsen et aL, 1975). This corresponds to an AA density of 30-60 aphids/terminal under Michigan conditions (Joldaen, 1980).…”

Section: Multiple Generation Simulationmentioning

confidence: 99%

Biological control ofAphis pomi [Hom.: Aphididae] ofAphidoletes aphidimyza [Dip.: Cecidomyiidae]; a predator-prey model

Morse

Croft

1987

Entomophaga

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Predation of Aphis pomi DeGeer [l-lore. : Aphididae] by Aphidoletes aphidimyza (Rondani) [Dipt. : Cecidomyiidae] was simulated in Michigan apple orchards using a computer and output validated against field data collected from sleeve cages enclosing aphid infested apple terminals. Lower and upper temperature thresholds for development were 2.9 and 35~ for nymphs of A. pomi with a mean immature developmental period of 162.3 heat units. Median survivorship of adult A. pomi was 364.3 heat units with an average fecundity of 60.7 offspring per female. A. aphidimyza egg ann larval lower threshold ann developmental periods were 10.5 and 25.5, 8.1oC and 65.5 heat units, respectively, larval functional response showed Type II behavior with a y-asymptote of 45 aphids killed per predator. Multiple generation model runs performed under different initial predator : prey densities indicated that current critical predator : prey ratios used in the field for control decisions may underestimate predator efficacy.

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“…Higher levels of damage Þrst occurred in the northern fruit-growing areas of central Washington. This area is contiguous with the Okanagan valley fruit district of British Columbia, where C. verbasci has been a signiÞcant pest since the 1970s (Madsen et al 1975). Fruit damage levels of up to 57% have been reported in Washington where populations were untreated (Reding et al 1992, Reding 2000.…”

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confidence: 99%

Influence of Timing and Prey Availability on Fruit Damage to Apple by <I>Campylomma verbasci</I> (Hemiptera: Miridae)

Reding

Beers

Brunner

et al. 2001

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Campylomma verbasci Meyer is a zoophytophagous mirid that feeds on small arthropods as well as apple (Malus domestica Borkhausen) fruits, causing economic damage to some cultivars. The influence of timing and prey availability on the amount of fruit damage was studied to determine whether either factor could be used to refine a management program. C. verbasci nymphs were caged on branches of fruiting 'Golden Delicious' apple trees during the period from bloom through early fruit set. The greatest amount of fruit damage occurred during the bloom period; little or no damage occurred after fruit reached approximately equals 13 mm in diameter. The availability of prey did not reduce the incidence of fruit damage by C. verbasci, nor did it influence the survival of nymphs. Nymphal survival was higher, however, in cages where a blossom or fruitlet was present versus a vegetative spur. These data support the hypothesis that post petal fall insecticide applications (those made after the fruit is greater than approximately equals 10-13 mm in diameter) are not useful in preventing economic levels of fruit damage in Washington State, and that petal fall applications would only prevent a fraction of the total amount of damage by this pest. The data from this study do not support the hypothesis that manipulating arthropod prey species of C. verbasci will prevent fruit damage. There was evidence to support the hypothesis that nymphs can survive a relatively short period (7 d) without arthropod prey.

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Pest Management: Experience in Six British Columbia Apple Orchards

Cited by 21 publications

References 9 publications

SEX PHEROMONE OF THE EASTERN SPRUCE BUDWORM (LEPIDOPTERA: TORTRICIDAE): OPTIMUM BLEND OF TRANS- AND CIS-11-TETRADECENAL

SEX PHEROMONE OF THE EASTERN SPRUCE BUDWORM (LEPIDOPTERA: TORTRICIDAE): OPTIMUM BLEND OF TRANS- AND CIS-11-TETRADECENAL

Biological control ofAphis pomi [Hom.: Aphididae] ofAphidoletes aphidimyza [Dip.: Cecidomyiidae]; a predator-prey model

Influence of Timing and Prey Availability on Fruit Damage to Apple by <I>Campylomma verbasci</I> (Hemiptera: Miridae)

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