Use of traps for monitoring adult leafrollers in apple orchards

Tomkins, A. R.; Penman, D. R.; Chapman, R. B.

doi:10.1080/03015521.1987.10425542

Cited by 11 publications

(9 citation statements)

References 10 publications

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“…If time had permitted, we would have continued to sample leaves throughout the insecticide application period in an attempt to record the rate at which larvae re-infested the gardens as insecticide residues decayed. Tomkins et al (1987) showed that there was a good relationship between port wine baited trap and pheromone trap catches inside orchards only when boundary pheromone traps were also set to remove immigrants. We were restricted to internal pheromone traps, and the relationship between pheromone trap catches and larval numbers in leaf samples might have improved if boundary traps had been in place.…”

Section: Immigrationmentioning

confidence: 99%

“…1990(Sucklingetal. ,1994, they may not accurately reflect within-orchard leafroller presence (Tomkins et al 1987;Stevens et al 1995).…”

Section: Introductionmentioning

confidence: 99%

“…For orchardists, a technique that traps adults should also reliably reflect the species composition and numbers of larvae in the crop. Bait-trapping and larval sampling are proven techniques (e.g., Collyer &vanGeldermalsen 1975;Tomkins et al 1987), but both are labour intensive and time-consuming. Pheromone trapping was originally seen as a costeffective alternative for determining the seasonal New Zealand Journal of Crop and Horticultural Science, 1996, Vol.…”

Section: Introductionmentioning

confidence: 99%

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Leafroller phenology and parasitism in Hawkes Bay, New Zealand, canefruit gardens

Charles

Walker

White

1996

New Zealand Journal of Crop and Horticultural Science

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Pheromone traps together with leaf and fruit samples were used to measure the seasonal occurrence and relative pest status of three species of leafrollers (Lepidoptera: Tortricidae) in two berryfruit gardens in Hawkes Bay, New Zealand. The pheromone trap data detected slight differences in the seasonal phenology of male flights between the two properties, but reflected the relative pest status of larvae infesting leaves and fruit at only one property. Numbers of larvae of the different species found in leaves, on the other hand, were good predictors of pest status at harvest. Three species of larval parasitoids (all Hymenoptera) were reared, and their seasonal occurrence noted, but the data were inadequate to allow life-table compilation or measurement of population regulation of their hosts.

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Section: Immigrationmentioning

confidence: 99%

“…1990(Sucklingetal. ,1994, they may not accurately reflect within-orchard leafroller presence (Tomkins et al 1987;Stevens et al 1995).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Leafroller phenology and parasitism in Hawkes Bay, New Zealand, canefruit gardens

Charles

Walker

White

1996

New Zealand Journal of Crop and Horticultural Science

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“…Pheromone traps have made it possible to record flight activity of male moths throughout the year in higher numbers, and lower sampling cost than bait traps (Tomkins et al 1987;Suckling et al 1990a). Pheromone trapping for leafrollers and codling moth commenced in Central Otago routinely in 1980, as the regional component of a programme to identify the species present in the fruit growing districts throughout the country, and to seek opportunities for reducing pesticide usage against these pests.…”

Section: Introductionmentioning

confidence: 99%

Pheromone trapping of orchard lepidopterous pests in Central Otago, New Zealand

McLaren

Suckling

1993

New Zealand Journal of Crop and Horticultural Science

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Pheromone traps were operated weekly throughout the growing season for three key leafroller pests and codling moth at four orchard sites for up to 10 growing seasons in the Alexandra and Clyde districts (Central Otago) of New Zealand. Epiphyas postvittana and Planotortrix octo were the most commonly trapped species. Ctenopseustis obliquana was caught in low numbers at all sites. All three species showed a trough in male flight activity in January between first and second generations. Cydia pomonella occurred at all four sites, exhibiting one generation per year, with flights continuing during the trough in leafroller activity. Prospects for reduced use of insecticides during this period therefore seem better on stonefruit than pipfruit since stonefruit are rarely attacked by codling moth.

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“…Rothschild (1975) concluded there was no significant difference in dismption of Cydia molesta (Busck) [=Gmpholita molesta (Busck)] when pheromone was released from the crowns of peach trees at 3.5 m or lower do\-vn at 1.5 m, a factor he attributed to adequate aerial distribution of the pheromone in orchard :! 0 lectively attract older mated females (Rothschild 1981, Tomkins et al 1987, Charmillot and Vickers 1991. Molasses bait traps in our studies caught more mated than virgin females.…”

mentioning

confidence: 99%

Trap Response and Fruit Damage by Obliquebanded Leafroller (Lepidoptera: Tortricidae) in Pheromone-Treated Apple Orchards in New York

Agnello

Reissig

Spangler

et al. 1996

Environmental Entomology

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Pheromone disruptants were tested from 1989 to 1992 in western New York to determine effect on trap catch and potential use in the control of obliqueblmded leafroller. Clwristoneurct rosacearw (Harris), using polyethylene tube tie and controlled-release membrane dispensers in plots of 0.2-2.4 ha. Effectiveness of pheromone at different application rates and canopy locations was evaluated using synthetic pheromone-baited traps, molassesbaited traps, and by inspecting foliar terminals and fruit for leafroller damage. All pheromone treatments significantly reduced (by 56-97%) pheromone trap catches of male moths compared with catches in nontreated blocks. One application of a nahlral-blend formulation at 988 dispensers per hectare was better than 494/ha at dismpting trap catch of both Rights that occur during the year. However, mated female motlls were present in the orchard center as frequently as anywhere else in a pheromone-treated block, indicating either immigration from outside sources or resident females that were not prevented from mating by the pheromone. The membrane dispenser emitted the 3-component natural blend at proportions similar to those in wild female moths. Pheromone traps placed in the tops of trees in a pheromonetreated orchard always caught higher numbers of male moths than those in lower-or middlecanopy positions. Pheromonc treatment resulted in fruit damage similar to tlIat of a pheromone + insecticide treatment under low to moderate leah'oller population pressure (i.e., 3-5% fruit damage in untreated orchards); however, no control method was able to reduce damage to acceptable levels in all cases.

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Use of traps for monitoring adult leafrollers in apple orchards

Cited by 11 publications

References 10 publications

Leafroller phenology and parasitism in Hawkes Bay, New Zealand, canefruit gardens

Leafroller phenology and parasitism in Hawkes Bay, New Zealand, canefruit gardens

Pheromone trapping of orchard lepidopterous pests in Central Otago, New Zealand

Trap Response and Fruit Damage by Obliquebanded Leafroller (Lepidoptera: Tortricidae) in Pheromone-Treated Apple Orchards in New York

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