Note: Insecticide resistance in<Emphasis Type="Italic">Helicoverpa armigera</Emphasis> from cotton-growing areas in Turkey |
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Authors: | Sakine Ugurlu M Oktay Gurkan |
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Institution: | (1) State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, 100193 Beijing, People’s Republic of China;(2) Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, People’s Republic of China; |
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Abstract: | Insecticide resistance inHelicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is one of the most important constraints on cotton production in Turkey. We investigated
the susceptibility ofH. armigera strains collected from cotton fields in the Adana, Hatay and Antalya provinces to insecticides which are in wide use. LD50 values for tralomethrin, lambda-cyhalothrin, endosulfan, profenofos and methomyl were determined by topical bioassay. At
the LD50 levels, resistance ratios for tralomethrin were 24.7-, 19.7- and 15.7-fold in the Adana, Hatay, and Antalya strains, respectively;
and for lambda-cyhalothrin were 41-, 20-and 40-fold, respectively. Resistance ratios ranged from 1.2- to 2.1-fold in all field
strains for endosulfan, profenofos and methomyl, with no significant resistance. These results suggest the presence of resistance
to tralomethrin and lambda-cyhalothrin inH. armigera strains collected from cotton fields, but no resistance to endosulfan, profenofos or methomyl could be observed. |
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