Journal of Applied Entomology (2020) 144, 109-122

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Sara Tianna DuPont and Christopher John Strohm (2020)
Integrated pest management programmes increase natural enemies of pear psylla in Central Washington pear orchards
Journal of Applied Entomology 144 (1-2), 109-122
Abstract: Natural enemies are a potentially important component of successful integrated pest management in Pacific Northwest pear orchards. Producers in Washington have dealt with difficult pear psylla, Cacopsylla pyricola (Förster) (Homoptera: Psyllidae), pressure and waning product effectiveness for decades. This study finds that integrated pest management (IPM) programmes can sustain high levels of natural enemies comparable to organic management. True bugs Deraeocoris brevis (Knight) (Hemiptera: Miridae) and Campylomma verbasci (Meyer), lacewings Chrysoperla plorabunda (Fitch) (Neuroptera: Chrysopidae) and Chrysopa nigricornis and the parasitic wasp Trechnites insidiosus (Crawford) (Hymenoptera: Encyrtidae) increased in abundance under IPM management. Biological-based IPM programmes have the potential to conserve natural enemies providing biological control in late summer when conventional sprays often fail due to pesticide resistance and inability to penetrate dense canopies.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website


Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
application technology


Pest and/or beneficial records:

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


Cacopsylla pyricola Pear (Pyrus) U.S.A. (NW)
Chrysopa nigricornis (predator) Cacopsylla pyricola Pear (Pyrus) U.S.A. (NW)
Deraeocoris brevis (predator) Cacopsylla pyricola Pear (Pyrus) U.S.A. (NW)
Chrysoperla plorabunda (predator) Cacopsylla pyricola Pear (Pyrus) U.S.A. (NW)
Trechnites insidiosus (parasitoid) Cacopsylla pyricola Pear (Pyrus) U.S.A. (NW)
Campylomma verbasci (predator) Cacopsylla pyricola Pear (Pyrus) U.S.A. (NW)