Journal of Pest Science (2015) 88, 767-775

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Patrick Sjöberg, Birgitta Rämert, Tomas Thierfelder and Ylva Hillbur (2015)
Ban of a broad-spectrum insecticide in apple orchards: effects on tortricid populations, management strategies, and fruit damage
Journal of Pest Science 88 (4), 767-775
Abstract: The objective of this study was to investigate the effects of the ban of Gusathion® (azinphosmethyl) as insecticide in Swedish apple orchards on tortricid moth population density and tortricid-induced crop damage. In addition, the effects on growers' management strategies, such as choice of spraying dates and alternative insecticide combinations, were studied. Populations of Adoxophyes orana, Archips podana, Archips rosana, Cydia pomonella, Pandemis heparana, Hedya nubiferana, and Spilonota ocellana were monitored using sex-pheromone traps during the four consecutive seasons of 2008–2011, with annual crop damage estimates made prior to harvest. Azinphosmethyl was banned after 2008. Significantly increasing population densities were observed in A. orana, A. podana, C. pomonella, and H. nubiferana, whereas correspondingly increasing crop damage was observed only in the case of C. pomonella. The growers' management strategies, with respect to number and timing of spray applications, did not change during the study period although the insecticides available after the ban were less persistent and more specific, i.e., either with primarily ovicidal or larvicidal effect. Analysis of a broad range of factors showed that temperatures during winter and spring, number and timing of insecticide applications, and usage of azinphosmethyl in 2008 were important factors affecting population size and the damage caused by the tortricid species studied.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Ylva Hillbur

Research topic(s) for pests/diseases/weeds:
control - general

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Cydia pomonella Apple (Malus) Sweden
Archips rosana Apple (Malus) Sweden
Adoxophyes orana Apple (Malus) Sweden
Archips podana Apple (Malus) Sweden
Pandemis heparana Apple (Malus) Sweden
Hedya nubiferana Apple (Malus) Sweden
Spilonota ocellana Apple (Malus) Sweden
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