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Effects of trap height, location, and spacing on pheromone-baited trap catch efficacy for oriental fruit moths (Lepidoptera: Tortricidae) in a peach orchard

Published online by Cambridge University Press:  23 May 2014

W.N. Kong ,
R.S. Hu ,
Z.G. Zhao ,
J. Li ,
Z.W. Zhang ,
S.C. Li  and
R.Y. Ma
W.N. Kong
Affiliation:
College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, China Laboratory for Integrated Pest Management of Insect, Institute of Plant Protection, Shanxi Academy of Agricultural Science, Taiyuan, China
R.S. Hu
Affiliation:
College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, China
Z.G. Zhao
Affiliation:
College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, China
J. Li
Affiliation:
Pomology Institute, Shanxi Academy of Agricultural Science, Taigu, Shanxi, China
Z.W. Zhang
Affiliation:
College of Forestry, Shanxi Agricultural University, Taigu, Shanxi, China
S.C. Li
Affiliation:
College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, China
R.Y. Ma*
Affiliation:
College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, China
*
1Corresponding author (e-mail: maruiyan2004@163.com).
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Abstract

The establishment of standardised methods for monitoring the oriental fruit moth Grapholitha molesta (Busck) (Lepidoptera: Tortricidae) requires the identification of factors that significantly affect trap catch efficacy. We examined the effects of trap height, trap location, and inter-trap spacing on trap catches in a conventional peach orchard. Traps were placed at heights of up to 3.0 m above the ground and sets of nine traps were positioned in grids with inter-trap distances of 10–50 m to determine the optimum trap height, location, and spacing. Traps were checked daily over 10 days for males during four periods corresponding to peak moth flight. Moth catches were higher when traps were placed toward the tops (2.5 m) and outside the canopy (3.0 m). Moth catches in traps located upwind and outside tended to be higher than in the central trap for all inter-trap distances. When inter-trap distances were shorter than 30 m, interference between traps occurred. Our results provide an efficient trap distribution for monitoring G. molesta in peach orchards.

Résumé

La mise en place de méthodes normalisées pour la surveillance de la tordeuse orientale du pêcher Grapholitha molesta (Busck) (Lepidoptera: Tortricidae) nécessite l'identification des facteurs qui affectent de manière significative l'efficacité de capture par piège. Nous avons examiné les effets de la hauteur du piège, l'emplacement du piège, et l'espacement inter-piège sur les prises des pièges dans un verger de pêchers classique. Les pièges ont été placés à une hauteur de 3,0 m au-dessus du sol et une série de neuf pièges ont été placés dans des grilles avec des distances inter-pièges de 10 à 50 m pour déterminer la hauteur de piège, l'emplacement et l'espacement optimaux. Les pièges ont été vérifiés quotidiennement pour les mâles pendant 10 jours au cours des quatre périodes correspondant au pic de vol des papillons. Les captures de papillons étaient plus élevées lorsque les pièges ont été placés vers le haut (2,5 m) et à l'extérieur de la canopée (3,0 m). Les captures de papillons dans les pièges situés en amont et à l'extérieur ont tendance à être plus élevées que dans le piège central pour toutes les distances inter-pièges. Quand les distances inter-pièges étaient plus courtes que 30 m, une interférence entre les pièges s'est produite. Nos résultats fournissent une distribution de pièges efficace pour le suivi de G. molesta dans les vergers de pêchers.

Type
Insect Management
Information
The Canadian Entomologist , Volume 146 , Issue 6 , December 2014 , pp. 684 - 692
Copyright
© Entomological Society of Canada 2014 

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Footnotes

Subject editor: Jon Sweeney

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