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Sustaining the effectiveness of new insecticides against aphid pests in the UK - LK09114

Neonicotinoids are highly effective against aphids and other pests and have become the most important group of insecticides since the pyrethroids. A previous project (LK 0953) addressed risks of neonicotinoid resistance in the peach-potato aphid, Myzus persicae, a pest that has proved adept at evolving resistance to many insecticides. It provided a strong foundation for stewarding neonicotinoids against a backdrop of increasing use on several host plants and the recent combination of seed and foliar applications. The ongoing introduction of neonicotinoids for new uses seems bound to accentuate risks of resistance to this class of compounds. Careful vigilance is essential to address these risks and safeguard the contribution of neonicotinoids and other novel aphicides to aphid pest management.

The project will strengthen the scientific framework for combating insecticide resistance in aphids, exemplified primarily by work on M. persicae, it will take a broad perspective on the range of chemicals available for aphid control, and will focus on the cross-company and cross-commodity challenges posed by the stewardship of neonicotinoid insecticides. It is intended to include all relevant Levy Boards and the major agrochemical manufacturers and retailers. It builds on approaches already developed for monitoring changes in response to neonicotinoids and characterising the conditions under which resistance is most likely to be expressed and selected. Novel elements include: (i) the incorporation of new non-neonicotinoid insecticides (pymetrozine and flonicamid); (ii) analysis of possible fitness costs associated with neonicotinoid resistance; (iii) systematic evaluation of how neonicotinoid dose-rates, timing of exposure and mode of application (seed treatment vs. foliar) influence resistance risks; and (iv) pilot work on key aphid targets other than M. persicae. Strong emphasis is placed on knowledge transfer and improved awareness of resistance threats in light of future agronomic developments including the greater use of neonicotinoids, particularly as foliar registrations.
Time-Scale and Cost
From: 2009

To: 2011

Cost: £402,116
Contractor / Funded Organisations
Certis, Home Grown Cereals Authority, NuFarm UK Ltd, Syngenta Crop Protection UK Ltd, Horticultural Development Council, Bayer CropScience Ltd, Agriculture and Horticulture Development, Rothamsted Research (BBSRC), British Beet Research Organisation, Belchim Crop Protection Ltd
Arable Farming              
Crop Pests              
Insecticide use              
Pest and Weed Control              
Pest Control