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Could movement of neonates from non-host plants affect the potential of polyculture to reduce crop colonisation by pest insects?

George, David and Collier, Rosemary and Whitfield, Charles and Port, Gordon (2011) Could movement of neonates from non-host plants affect the potential of polyculture to reduce crop colonisation by pest insects? Crop Protection, 30 (8). pp. 1103-1105. ISSN 0261-2194

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Abstract

Existing and impending constraints to the use of synthetic pesticides, along with changing legislation in favour of an integrated approach to pest management, are driving uptake of ‘alternative’ approaches to pest control. Polyculture is one such approach, often relying upon the presence of non-host plants within the crop to reduce colonisation by pest insects. The diamondback moth, Plutella xylostella (L.), is known to oviposit on non-host plants and the present study showed that neonates were able to move relatively large distances, enabling them to relocate from non-host natal plants to nearby hosts. Although fewer larvae were found on host plants when they hatched on non-hosts, it is concluded that even a low level of re-location of neonates could potentially reduce the potential for polyculture to control this pest. It is proposed that non-host oviposition and neonate movement could explain why polyculture sometimes fails in controlling pest insects.

Item Type: Article
Journal or Publication Title: Crop Protection
Uncontrolled Keywords: Polyculture ; Non-host oviposition ; Larval movement ; Plutella sp
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 55300
Deposited By: ep_importer_pure
Deposited On: 21 Jun 2012 14:28
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 20:37
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/55300

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