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Wilf Powell
Researcher at Rothamsted Research
Publications - 115
Citations - 5346
Wilf Powell is an academic researcher from Rothamsted Research. The author has contributed to research in topics: Aphid & Acyrthosiphon pisum. The author has an hindex of 41, co-authored 115 publications receiving 5119 citations. Previous affiliations of Wilf Powell include The Hertz Corporation & United States Department of Agriculture.
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Journal ArticleDOI
Electrophysiological and behavioural responses of the pollen beetle, Meligethes aeneus , to volatiles from a non-host plant, lavender, Lavandula angustifolia (Lamiaceae)
Alice L. Mauchline,Michael A. Birkett,Christine M. Woodcock,John A. Pickett,Juliet L. Osborne,Wilf Powell +5 more
TL;DR: The aim of this study was to identify the active components in L. angustifolia oil, and to investigate the behaviour of M. aeneus to these chemicals, to establish the most effective use of repellent stimuli to disrupt colonisation of oilseed rape crops.
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The effect of spatial scale on interactions between two weevils and their food plant
TL;DR: The results suggest that the density of available seedheads varied among years and this had a direct effect on abundance and the distribution of M. pyraster, which develops in the stem within the seedhead, was more sensitive to changes in seedhead density than was G. pascuorum, which developed within the seeds themselves.
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Comparative Responses of Parasitoids to Synthetic and Plant-Extracted Nepetalactone Component of Aphid Sex Pheromones
TL;DR: The response of aphid parasitoids to nepetalactone is influenced more by enantiomeric purity rather than the possible presence of plant-related contaminants associated with plant extraction, which indicates that plant-derived contaminants can reduce attractancy.
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Responses of Phradis parasitoids to volatiles of lavender, Lavendula angustifolia—a possible repellent for their host, Meligethes aeneus
TL;DR: The parasitoids gave no significant responses to the odours of lavender oil in behavioural bioassays and there was no evidence to suggest that lavender-treated oilseed rape plants would reduce host habitat location by parasitoid of the target pest.
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Effects of non‐host plant odour on Meligethes aeneus during immigration to oilseed rape
TL;DR: Results showed that oilseed rape plants treated with lavender odour were less colonised by M. aeneus in comparison with an untreated control, but that the treatment effect was much reduced if the lavender Odour was applied after colonisation.