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

George, David, Collier, Rosemary, Whitfield, Collette 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-hostplants within the crop to reduce colonisation by pest insects. The diamondback moth, Plutella xylostella (L.), is known to oviposit on non-hostplants 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 hostplants 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 neonatemovement could explain why polyculture sometimes fails in controlling pest insects.

Item Type:	Article
Uncontrolled Keywords:	Polyculture, non-host oviposition, larval movement, Plutella sp
Subjects:	C200 Botany C900 Others in Biological Sciences D700 Agricultural Sciences D900 Others in Veterinary Sciences, Agriculture and related subjects
Department:	Faculties > Health and Life Sciences > Applied Sciences
Depositing User:	Ay Okpokam
Date Deposited:	04 Oct 2012 11:23
Last Modified:	12 Oct 2019 18:26
URI:	http://nrl.northumbria.ac.uk/id/eprint/9427

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