A Preliminary Report on the Effects of a Split Application of Reldan on Aquatic and Terrestrial Ecosystems
Problem Addressed: Application of RELDAN, pesticide
Key Findings: Knockdown of terrestrial invertebrates was slight, involving primarily small flying Diptera, but also Hymenoptera, Araneida and Plecoptera. Effects of the first spray were more pronounced, presumably due to warmer temperatures and increased insect activity.
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- Holmes, S.B.
Canadian Forestry Service - Millikin, R.L.
Canadian Forestry Service
Studies were conducted by the Environmental Impact Section of the Forest Pest Management Institute in Quebec in 1977 (Kingsbury, 1979), and again in 1979 (Kingsbury and Holmes 1980), to assess the effects of aerial applications of the candidate forestry insecticide RELDAN (chlorphyrifos-methyl) on aquatic ecosystems. Further studies were carried out in New Brunswick in 1980 and were expanded to include effects on forest songbirds and terrestrial arthropods. A preliminary analysis of the results of the 1980 study is presented in this report.
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