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Co-application of microencapsulated pear ester and codlemone for mating disruption of Cydia pomonella

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Abstract

Studies were conducted in two apple orchards in 2009 and 2010 to examine whether the efficacy of mating disruption can be improved by co-applying microencapsulated (MEC) pear ester (DA-MEC) and codlemone (Ph-MEC) in comparison to DA-MEC and Ph-MEC treatments alone. Combined applications were made at a rate of 5 g a.i ha−1 DA-MEC + 25 g a.i ha−1 Ph-MEC in HV (635 L water ha−1) and ULV (40 L water ha−1) sprays. Moth catches were monitored weekly with delta-style traps containing 3 mg each of codlemone and pear ester. Moths in DA-combo traps were sexed and females were dissected to determine mating status. Codling moth catches did not differ significantly between the ULV and HV sprays of DA-MEC + Ph-MEC. The combinational MEC-treatments applied in both spray volume maintained good trap shutdown, each averaging 85 % reduction in moth capture over distant control orchards. While DA-MEC and Ph-MEC treatments alone disrupted male codling moth orientation to traps by 43 and 61 %, respectively. In the DA-MEC, Ph-MEC and combinational blocks, DA-combo traps caught a lower percentage (9–14 %) of female moths than those placed in both untreated and insecticide-treated blocks. In July and September, fruit damage was evaluated by visually inspecting a total of 1,200 randomly chosen fruits per orchard. Depending on the spray volume used, the combined MEC sprays reduced the number of fruits infested with larvae by 85–93 % compared with untreated control. In conclusion, DA-MEC can effectively augment pheromone mating disruption and offers additional control option for integrated pest management programmes.

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Acknowledgments

I would like to thank Agrisense BCS Ltd (UK) and Suterra LLC (USA) for providing material support. I also thank Dr Alan Knight (USDA-ARS, Wapato) for language revision and critical reviewing of the earlier version of the manuscript.

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Authors and Affiliations

  1. Department of Plant Protection, Faculty of Agriculture, Uludag University, Gorukle Campus, Bursa, 16059, Turkey

    Orkun B. Kovanci

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  1. Orkun B. Kovanci
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Correspondence to Orkun B. Kovanci.

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Communicated by P. G. Becher.

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Kovanci, O.B. Co-application of microencapsulated pear ester and codlemone for mating disruption of Cydia pomonella . J Pest Sci 88, 311–319 (2015). https://doi.org/10.1007/s10340-014-0619-x

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  • DOI: https://doi.org/10.1007/s10340-014-0619-x

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