Hydrocyanic Acid and Other Fumigants for Control of Larvae of Plemeliella abietina1 and Megastigmus sp.2 in Imported Spruce Seed3,4
In laboratory fumigations, hydrocyanic acid (HCN) at 16 mg per liter for 2 hours under sustained vacuum near 125 mm mercury absolute pressure and at 22 was effective against larvae of Plemeliella abietina Seitner and Megastigmus sp. Infesting spruce seed imported from Europe. Both insects showed high resistance to methyl bromide, and P. abietina, but Megastigmus survived 32 mg for 2 hours. In small-scale germination tests, seeds of 5 species of conifers, white spruce Picea glauca (Moench) Voss; Norway spruce, Picea abies (L.) Karst; Scotch pine, Pinus sylvestris L; Mugo pine, Pinus mugo var. mughus (Scop.) Zenari; and European larch, Larix decidua Mill, tolerated 32 mg or more HCN under vacuum, Carbon disulfide showed promise, but more data are needed Results with dry heart, acrylonitrile, carbon tetrachloride, dichlorvos, and ethylene dibromide are discussed.
Document Type: Research Article
Publication date: February 1, 1968
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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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