Articles
Can low-rate twin tubes achieve successful mating disruption for filbertworm, Cydia latiferreana (Lepidoptera: Tortricidae) in hazelnut orchards?
Article number
1379_54
Pages
373 – 378
Language
English
Abstract
Hazelnut is a specialty crop providing significant agricultural revenue in Oregon, USA. Filbertworm (FBW), Cydia latiferreana, is one of the detrimental pests in hazelnut production whose presence results in dockage at the receiving station due to unsaleable nuts.
Hatched larvae penetrate inside the nut and feeding causes an unmarketable crop.
Insecticide application is the primary method to manage damaging FBW populations.
Repeated use of insecticides may however result in secondary pest resurgence and disruption of natural enemies of other pests in the orchard.
Mating disruption with sex pheromone is an alternative control method to minimize insecticide use while reducing pest damage.
In the current study, a range of pheromone dispenser densities was deployed to evaluate the efficacy of FBW mating disruption in hazelnut orchards.
Experiments were conducted in four hazelnut orchards consisting of ~20 ha.
ISOMATE® HSW Flex dispensers were evenly placed in the field at 0, 25, 50, 50C, 74, 124, and 247 ha‑1 application rate and ring dispensers were used as the grower standard mating disruption application.
Dispensers were applied to the upper ½ of the canopy approximately 3-4 m above the ground.
Male FBW counts were checked weekly by placing two pheromone-baited delta traps in each plot.
The results indicate that low-rate dispensers provided equal disruption compared to standard commercially used rates.
Further research is needed to implement low-rate treatments in a large-scale field scenario and determine their economic benefit.
Hatched larvae penetrate inside the nut and feeding causes an unmarketable crop.
Insecticide application is the primary method to manage damaging FBW populations.
Repeated use of insecticides may however result in secondary pest resurgence and disruption of natural enemies of other pests in the orchard.
Mating disruption with sex pheromone is an alternative control method to minimize insecticide use while reducing pest damage.
In the current study, a range of pheromone dispenser densities was deployed to evaluate the efficacy of FBW mating disruption in hazelnut orchards.
Experiments were conducted in four hazelnut orchards consisting of ~20 ha.
ISOMATE® HSW Flex dispensers were evenly placed in the field at 0, 25, 50, 50C, 74, 124, and 247 ha‑1 application rate and ring dispensers were used as the grower standard mating disruption application.
Dispensers were applied to the upper ½ of the canopy approximately 3-4 m above the ground.
Male FBW counts were checked weekly by placing two pheromone-baited delta traps in each plot.
The results indicate that low-rate dispensers provided equal disruption compared to standard commercially used rates.
Further research is needed to implement low-rate treatments in a large-scale field scenario and determine their economic benefit.
Publication
Authors
S. Mermer, B. Miller, P. McGhee, B.J. David, T.J. Hafner, R. Welty, V.M. Walton
Keywords
filbert worm, HSW Flex dispenser, hazelnut pest, integrated pest management
Groups involved
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