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Journal of Crop Protection، جلد ۱۳، شماره ۴، صفحات ۳۳۳-۳۴۸
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عنوان انگلیسی Evaluation of selected insecticides against the cabbage aphid, Brevicoryne brassicae, and its parasitoid, Diaeretiella rapae
چکیده انگلیسی مقاله
Diaeretiella rapae is an important natural enemy in the biological control of the cabbage aphid Brevicoryne brassicae. This study evaluated the lethal effects of dichlorvos, dinotefuran, indoxacarb, spinosad, and hexaflumuron on the aphid and its parasitoid. The sub-lethal effects of spinosad and dinotefuran were also examined. Circular leaf discs were soaked in insecticide concentrations, and fourth instar nymphs of the aphid were exposed. For the adult wasps, the bioassay involved contact with insecticide residues. The toxicity of the insecticides against the pest and its parasitoid was ranked as follows: dichlorvos > dinotefuran > spinosad > hexaflumuron > indoxacarb, with significantly higher toxicity against the parasitoid wasp. The highest and lowest selective ratios for the insecticides' safety towards the parasitoid were calculated for hexaflumuron and indoxacarb, respectively. Hexaflumuron and spinosad are the least harmful insecticides to the wasp. The net reproductive rate of dinotefuran was lower than that of the control and spinosad. The values for gross reproductive rate were 41.99 ± 5.34, 27.75 ± 3.3, and 16.97 ± 2.36 offspring/female for the control, spinosad, and dinotefuran treatments, respectively. The intrinsic rate of population increase for D. rapae was lowest following exposure to dinotefuran. The percentage of adult D. rapae emergence in the control, spinosad, and dinotefuran was 99.6%, 96.8%, and 94.2%, respectively. A Type II functional response was observed for D. rapae after exposure to the control, Spinosad, and Dinotefuran treatments. Overall, it was found that hexaflumuron and D. rapae are effective options for an integrated pest management program to control the cabbage aphid.
کلیدواژه‌های انگلیسی مقاله The lethal effect,Sublethal effects,functional response,Diaeretiella rapae,Brevicoryne brassicae,Side-effects
نویسندگان مقاله Banafsheh Pooyan |
Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan, Iran.

Jahangir Khajehali |
Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan, Iran.

Mohamadreza Nematollahi |
Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan, Iran.

Hamzeh Izadi |
Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran.

نشانی اینترنتی https://jcp.modares.ac.ir/article_1676_d6f1f8e89765d25fda07a43245729c0e.pdf
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