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Tailored flower strips promote natural enemy biodiversity and enhance pest control in adjacent potato crops

Tschumi, Matthias LU ; Albrecht, Matthias; Collatz, Jana; Dubsky, Viktor; Entling, Martin H; Najar-Rodriguez, Adriana J and Jacot, Katja (2016) In Journal of Applied Ecology
Abstract
Sown flower strips are increasingly implemented within agri-environment schemes (AES) to increase functional biodiversity and ecosystem services such as pollination or natural pest control, but their effectiveness in achieving these goals remains poorly studied.
We tested the performance of experimentally sown annual flower strips specifically designed to promote natural enemies of aphids and their pest control services (tailored flower strips) in adjacent potato crops (n = 8) compared with control fields (n = 10). Flower strips consisted of 11 plant species providing abundant floral and extra-floral resources.
The abundance of key natural enemies of aphids (hoverflies, lacewings and ladybirds) and hoverfly species... (More)
Sown flower strips are increasingly implemented within agri-environment schemes (AES) to increase functional biodiversity and ecosystem services such as pollination or natural pest control, but their effectiveness in achieving these goals remains poorly studied.
We tested the performance of experimentally sown annual flower strips specifically designed to promote natural enemies of aphids and their pest control services (tailored flower strips) in adjacent potato crops (n = 8) compared with control fields (n = 10). Flower strips consisted of 11 plant species providing abundant floral and extra-floral resources.
The abundance of key natural enemies of aphids (hoverflies, lacewings and ladybirds) and hoverfly species richness was greatly enhanced in tailored flower strips compared with potato control strips. This resulted in an average increase in the number of eggs deposited by hoverflies and lacewings by 127% and 48%, respectively, and a reduction in the number of aphids by 75% in adjacent potato crops.
Synthesis and applications. We conclude that tailored flower strips can be an effective agri-environmental measure to enhance natural enemies and aphid control in nearby crops. Indeed, tailored flower strips may help to reduce insecticide input in potato production as they significantly decrease the probability that action thresholds are reached. Promoting natural enemy abundance and diversity, as observed for hoverflies, may increase the stability of pest control and provide additional benefits to agro-ecosystems in terms of natural enemy conservation. We thus recommend establishing tailored flower strips as a promising management option to reconcile the objectives of ecological intensification and biodiversity conservation. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Applied Ecology
pages
8 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:84962733434
ISSN
1365-2664
DOI
10.1111/1365-2664.12653
language
English
LU publication?
no
id
71d8c327-13b9-4da0-9d23-46df7ca41fed
date added to LUP
2016-05-03 13:45:47
date last changed
2017-04-28 07:49:50
@article{71d8c327-13b9-4da0-9d23-46df7ca41fed,
  abstract     = {    Sown flower strips are increasingly implemented within agri-environment schemes (AES) to increase functional biodiversity and ecosystem services such as pollination or natural pest control, but their effectiveness in achieving these goals remains poorly studied.<br/>    We tested the performance of experimentally sown annual flower strips specifically designed to promote natural enemies of aphids and their pest control services (tailored flower strips) in adjacent potato crops (n = 8) compared with control fields (n = 10). Flower strips consisted of 11 plant species providing abundant floral and extra-floral resources.<br/>    The abundance of key natural enemies of aphids (hoverflies, lacewings and ladybirds) and hoverfly species richness was greatly enhanced in tailored flower strips compared with potato control strips. This resulted in an average increase in the number of eggs deposited by hoverflies and lacewings by 127% and 48%, respectively, and a reduction in the number of aphids by 75% in adjacent potato crops.<br/>    Synthesis and applications. We conclude that tailored flower strips can be an effective agri-environmental measure to enhance natural enemies and aphid control in nearby crops. Indeed, tailored flower strips may help to reduce insecticide input in potato production as they significantly decrease the probability that action thresholds are reached. Promoting natural enemy abundance and diversity, as observed for hoverflies, may increase the stability of pest control and provide additional benefits to agro-ecosystems in terms of natural enemy conservation. We thus recommend establishing tailored flower strips as a promising management option to reconcile the objectives of ecological intensification and biodiversity conservation.},
  author       = {Tschumi, Matthias and Albrecht, Matthias and Collatz, Jana and Dubsky, Viktor and Entling, Martin H and Najar-Rodriguez, Adriana J and Jacot, Katja},
  issn         = {1365-2664},
  language     = {eng},
  pages        = {8},
  publisher    = {Wiley-Blackwell},
  series       = {Journal of Applied Ecology},
  title        = {Tailored flower strips promote natural enemy biodiversity and enhance pest control in adjacent potato crops},
  url          = {http://dx.doi.org/10.1111/1365-2664.12653},
  year         = {2016},
}