Degree-day and pheromone traps in control timing of codling moth, Cydia pomonella L. (Lepidoptera: Olethreutidae)

Document Type : Original paper

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Abstract

Codling moth is a serious pest of pome fruits in Iran. In order to timing chemical control, male adult emergence along with the time of larval activity were studied during 2008-2011 at a research orchard in Bavanat strict (Fars province). Delta-shape pheromone traps were used to determine male adult moth emergence. According to the data obtained from regional weather station and larval activity data, degree-day model was prepared. Calculations showed that 155, 720 and 1336 degree-days are required for egg eclosion at first, second and third generations respectively. On the basis of the data available by pheromone traps the measurement time was determined to be 9-14 May, 4-9 June and 2-7 August 2008 and 2-9 June, 7-11 July, and 11-16 August 2009 for the three generations of those years respectively. . The larval emergence were determined in the same way for the next years as well. Based on this study, degree-days needed required for each event of codling moth life may be determined using daily reports of regional temperature data.  

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