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The effectiveness of wax secretion on chemical control in some mealybug species
ULUSOY Selcuk,KAHYA Dogancan,BILGIN Mustafa Gokhan,APALAK Alaittin 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.3
The wax structure of mealybugs can be seen on the body naturally, causing natural resistance and decreasing the efficacy of insecticides. This study was conducted to determine effectiveness of wax structure on chemical control by removing with isoamyl alcohol(ISO) for Planococcus citri Risso (Hemiptera: Pseudococcidae), Phenacoccus solenopsis Tinsley (Hemiptera:Pseudococcidae) and Phenacoccus madeirensis Green (Hemiptera: Pseudococci dae). Before and after the occurrence of wax, LC 50 levels with bioassay were detected for Buprofezin (BP), sulfoxaflor (SF), chlorpyrifos ethyl (CH), dimethoate (DM), spirotetramat (SP), Lambda- Cyhalothrin (LC), pyr iproxyfen (PY) insecticides. The effectiveness of PY increased 10.6 and 6.5 times for P. Citri and P. solenopsis, the efficacy of BP increased 3 times for P. Madeirensis with the dissolution of the wax structure after the application of ISO. The lowest increase of efficacy was found 1.6 and 1.4 times for P. maderiensis and P. solenopsis for SF,1.1 times for BP on P. citri. The reproduction of the wax for adult female mealybugs was seen 72 h later after the ISO application. It has been revealed that the mealybug wax structure significantly reduced the effectiveness of some insecticides and this factor can provide remarkable contributions in chemical control.
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