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Control strategies for codling moth in integrated pest management of pome fruit trees.

LLUÍS BATLLORI OBIOLS

Plant Health and Agriculture Section of Girona. Department of Agriculture, Livestock, Fisheries, Food and the Environment.

Control strategies for codling moth in integrated pest management of pome fruit trees.

LLUÍS BATLLORI OBIOLS. 
Plant Health and Agriculture Section of Girona. Department of Agriculture, Livestock, Fisheries, Food and the Environment.

Control strategies for codling moth in integrated pest management of pome fruit trees.

LLUÍS BATLLORI OBIOLS. 
Plant Health and Agriculture Section of Girona. Department of Agriculture, Livestock, Fisheries, Food and the Environment.

The codling moth (Cydia pomonella L) is the main pest of pome fruit trees which must be the focus of integrated pest management strategies. The best control option is mating disruption, wherever agronomic conditions enable this. Depending on the pest population on the plot, this method may be sufficient for effective control, or may need to be supplemented with a specific insecticide treatment. 

For over 30 years, the population level has been estimated by counting the number of males captured weekly by using pheromones for monitoring purposes. Combining the curve obtained together with pest modelling based on climatic data shows the optimum time for treatment with conventional chemicals. The tolerance level is therefore defined on the basis of weekly catch figures. 

Mating disruption interferes with this population estimation system, and replacing pheromones with kairomones (pear ester) does not provide an adequate solution. 
The only available alternative is to visually inspect damage regularly, but this entails a high cost per surface unit. In many cases, a lack of population data results in precautionary insecticide treatments that are probably unnecessary.

When chemical control is applied, it is vital to correctly alternate the active ingredients to prevent an increase in the resistant populations first found some 15 years ago. 

Other strategies, such as codling moth netting, should be considered when developing integrated pest management programmes, especially in areas with high populations of the pest.

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In accordance with the Organic Law on the Protection of Personal Data 15/1999, of 13 December, Promotora de Exportaciones Catalanas SA (hereinafter PRODECA), whose address is Gran Via de les Corts Catalanes, 620, principal, 08007 Barcelona, with tax reg. no. NIF A58241316, declares that the images contained on the website www.smartfruitcongress.cat are included in a file belonging to PRODECA. The purpose of this file is the promotion, via its website, of the activities conducted by PRODECA – SmartfFruit IPM International Congress.

PRODECA guarantees that you may, at any time, exercise your right to access, rectify, cancel or oppose by writing to the aforesaid postal address, using the reference "PROTECCIÓN DE DATOS - SMARTFRUIT", or to the email address smartfruitcongress@smartfruitcongress.cat.

Specifically, to correctly exercise these rights you must clearly provide the following items in that communication:
- Name, surname(s) and photocopy of National Identity Document or Passport.
- Statement of the purpose of the request.
- Address for notification purposes.
PRODECA also declares that it reserves the right to delete from its website any content that it considers violates current and applicable legislation.

D’acord amb l’article 17.1 de la Llei 19/2014, la ©Generalitat de Catalunya permet la reutilització dels continguts i de les dades sempre que se'n citi la font i la data d'actualització i que no es desnaturalitzi la informació (article 8 de la Llei 37/2007) i també que no es contradigui amb una llicència específica.