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Toxicity of insecticides to Coccinella repanda Thunberg and Harmonia octomaculata (Fabricius) (Coleoptera: Coccinellidae)

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Broadley, R.H. (1983) Toxicity of insecticides to Coccinella repanda Thunberg and Harmonia octomaculata (Fabricius) (Coleoptera: Coccinellidae). Queensland Journal of Agricultural and Animal Sciences, 40 (2). pp. 125-127. ISSN issn:0033-6173

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Abstract

Laboratory tests of the contact toxicity of eight insecticides to Coccinella repanda adults and six insecticides to Harmonia octomaculata adults were conducted at Toowoomba, Qld. Insecticides in ascending order of toxicity to C. repanda were endosulfan, chlorpyrifos, profenofos, methidathion, methomyl, monocrotophos, cypermethrin and deltamethrin; and similarly for H. octomacu/ata were permethrin, sulprofos, methidathion, chlorpyrifos, cypermethrin and deltamethrin. H. octomaculata was less susceptible to methidathion, cypermethrin and deltamethrin than C. repanda. Results are discussed in relation to choice of insecticides for control of Queensland sunflower pests.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Subjects:Plant culture > Field crops
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Pesticides
Live Archive:30 Apr 2024 03:17
Last Modified:30 Apr 2024 03:17

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