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Agricultura Técnica
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0365-2807
EISSN: 0365-2807
Vol. 67, No. 1, 2007, pp. 23-28
Bioline Code: at07003
Full paper language: English
Document type: Research Article
Document available free of charge

Agricultura Técnica, Vol. 67, No. 1, 2007, pp. 23-28

 es Control de machos de Choristoneura rosaceana check for this species in other resources (Harris) y Pandemis pyrusana check for this species in other resources Kearfott (Lepidoptera: Tortricidae) en huertos de manzanos del Estado de Washington (EE.UU.) tratados con diferentes densidades de varias formulaciones atracticidas
Curkovic, Tomislav & Brunner, Jay F.

Resumen

Éste es el primer informe del control de machos de Choristoneura rosaceana (Harris) y Pandemis pyrusana Kearfott con atracticidas que contengan 1,6 ó 16% de feromona, con o sin permetrina al 6%. Se compararon diferentes densidades de atracticidas (750-3.600 gotas ha-1), aplicadas homogéneamente en la copa de los manzanos (Malus pumila Mill.). Antes de los tratamientos no se observaron diferencias estadísticas en las capturas en trampas cebadas con feromona. Después de aplicar los tratamientos, se observó una reducción significativa en las capturas, al usar mayores concentraciones de feromona y mayores densidades de gotas por hectárea. La incorporación de permetrina en la formulación atracticida no mejoró su actividad en el control de machos. En general, los resultados sugieren que un efecto similar a la confusión de cópula, en lugar de un efecto letal atribuible al atracticida, o bien otro mecanismo, controló a los machos de estas especies. La matriz grasosa usada en la formulación atracticida se sugiere como una alternativa para ser probada respecto de las formulaciones actualmente usadas para confusión de cópula.

Palabras-clave
atracticidas, Choristoneura rosaceana, Pandemis pyrusana, permetrina, concentración de feromona, densidad de fuentes, confusión de cópula.

 
 en Choristoneura rosaceana check for this species in other resources (Harris) AND Pandemis pyrusana check for this species in other resources Kearfott (Lepidoptera: Tortricidae) male control in Washington state (USA) apple orchards treated with different source densities of several attracticide formulations
Curkovic, Tomislav & Brunner, Jay F.

Abstract

This is the first report on attracticides loaded with 1.6 or 16% pheromone, with or without 6% permethrin, tested for Choristoneura rosaceana (Harris) and Pandemis pyrusana Kearfott male control. Different densities of attracticide sources (750-3,600 droplets ha-1) homogeneously applied on the canopy were compared in apple (Malus pumila Mill.) orchards. Before attracticide application, no differences in male captures using pheromone baited trap were observed. Afterwards, a significant reduction of captures occurred along with the increasing pheromone concentration, when larger density sources were used. The addition of permethrin into the attracticide formulation, however, did not significantly improve the reduction of males. Overall, these results suggest that mating disruption or other mechanism, instead of the killing effect attributed to attracticides, controlled males. The attracticide formulations matrix reported is suggested to be tested as an alternative to the current ones used for mating disruption. It is suggested to test the attracticide formulation matrix reported as an alternative to the current ones used for mating distuption.

Keywords
attracticides, Choristoneura rosaceana, Pandemis pyrusana, permethrin, pheromone concentration, point source density, mating disruption.

 
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Alternative site location: http://www.inia.cl/at/agritec.htm

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