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Attract, reward and disrupt: combining habitat manipulation and semiochemicals to enhance pest control in apple orchards

Pålsson, Joakim (2019). Attract, reward and disrupt: combining habitat manipulation and semiochemicals to enhance pest control in apple orchards. Diss. (sammanfattning/summary) Alnarp : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2019:48
ISBN 978-91-7760-414-3
eISBN 978-91-7760-415-0
[Doctoral thesis]

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Abstract

Agricultural intensification entails negative effects on natural enemy populations and the pest regulation services they provide. Habitat manipulation holds potential to control pests with less negative effects on the environment than conventional methods. This can be achieved by the establishment of non-crop vegetation to support natural enemies and disfavour pests. Synthetic semiochemicals possess the capability of affecting arthropods behaviour and can be combined with habitat manipulation to increase pest control. In this thesis I examine how biological control is affected in high (conventional) and low (organic) intensity apple production systems and how habitat manipulation with and without semiochemicals can be used to enhance biological pest control.

The intensity of management had a strong effect on the natural enemy community and their pest control potential. Organic apple orchards were able to support a higher number and diversity of natural enemies and presented a higher suppression of sentinel Dysaphis plantaginea colonies than integrated pest management orchards. The natural enemies which were most affected by management were predatory heteroptera with many species almost exclusively found in organic orchards. D. plantaginea, establishes a mutualism with ants as a protection strategy against natural enemies. By introducing bean plants infested with Aphis fabae, ants (Lasius niger) were diverted from D. plantaginea colonies, leaving them exposed to predation.

The possibility to attract natural enemies with synthetic herbivore induced plant volatiles (HIPVs) was tested in apple and barley. In both crops the HIPVs were able to attract green lacewings (Chrysoperla carnea s.l.) over four weeks. Significant increases in oviposition and larval abundance was recorded compared to the control as well as a higher reduction in two species of cereal aphids.

When HIPVs were deployed along flower strips, the attraction of natural enemies including Miridae was enhanced. The combination of HIPVs, flower strips and mating disruption suppressed populations of lepidopteran pests below that of flower strips + mating disruption or mating disruption alone under a three-year study.

Authors/Creators:Pålsson, Joakim
Title:Attract, reward and disrupt: combining habitat manipulation and semiochemicals to enhance pest control in apple orchards
Series/Journal:Acta Universitatis Agriculturae Sueciae (1652-6880)
Year of publishing :2019
Volume:2019:48
Number:2019:48
Number of Pages:65
Papers/manuscripts:
NumberReferences
IPorcel, M*, Andersson, GKS, Pålsson, J & Tasin, M 2018 Organic management in apple orchards: Higher impacts on biological control than on pollination. Journal of Applied Ecology, vol. 55, vol. 6, 2779-2789.
IIPålsson, J., Porcel, M., Frimodt Hansen, M., Offenberg, J., Nardin, T., Larcher, R. and Tasin, M.* 2019. Aphid-infested beans divert ant attendance from the rosy apple aphid in apple-bean intercropping. (manuscript)
IIIPålsson, J., Thöming, G., Silva, R., Porcel, M.,Dekker, T. and Tasin, M.* 2019. Recruiting on the spot: A biodegradable formulation for lacewings to trigger biological control of aphids Insects., vol. 10, 6
IVPålsson, J., Porcel, M., Dekker, T. and Tasin, M.* 2019. Attract, reward & disrupt: responses of lepidopteran pests and natural enemies to combinations of habitat manipulation and semiochemicals in organic apple (manuscript)
Place of Publication:Alnarp
Publisher:Institutionen för växtskyddsbiologi, Sveriges lantbruksuniversitet
ISBN for printed version:978-91-7760-414-3
ISBN for electronic version:978-91-7760-415-0
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Full Text Status:Public
Agris subject categories.:F Plant production > F01 Crop husbandry
H Protection of plants and stored products > H01 Protection of plants - General aspects
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Horticulture
Keywords:conservation biological control, codling moth, leafrollers, Miridae, rosy apple aphid, biological control, mating disruption
URN:NBN:urn:nbn:se:slu:epsilon-p-100203
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-100203
ID Code:16165
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:24 May 2019 11:31
Metadata Last Modified:05 Jun 2019 06:43

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