Use of azadirachtin as a larvicide or feeding deterrent for control of western flower thrips in orchard systems |
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Authors: | LA Pearsall EJ Hogue |
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Institution: | (1) Pacific Biological Station, Nanaimo, B.C., V9R 5K6 Canada;(2) Agriculture and Agri-Food Canada Research Centre, Summerland, B.C., VOH 1Z0 Canada |
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Abstract: | Field trials were carried out to assess the efficacy of a 4% azadirachtin (aza)-containing neem seed extract EC, against damage
by western flower thrips Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)] on nectarine crops in the Similkameen Valley, British Columbia, Canada. Several trials
were conducted during the years 1993 to 1995 to assess the repellent and larvicidal properties of aza, specifically: whether
it was effective against adult or larval thrips; how the effects differed with concentration of aza; and whether female WFT
avoided aza-treated flowers. Our results showed that aza has only limited effectiveness as a control agent against WFT on
nectarines and the current formulation does not appear to limit larval development sufficiently to be deemed a possible control
agent in this field situation. |
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Keywords: | Azadirachtin western flower thrips Frankliniella occidentalis nectarine orchard IPM |
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