In laboratory tests in 1966-70, conifer seeds infested with larvae of Megastigmus spp. or 3 species of Cecidomyiidae were fumigated with carbon disulfide (CS2): carbon tetrachloride, 1:5 by weight (Vertifume®). In 24- hour fumigations at normal atmospheric pressure (NAP) and 21.6-26.7, larvae of M. strobilobius (Ratzeburg) in seeds of Picea spp. survived after fumigation at a dosage of 32 mg/liter of CS2 in the mixture, while Craneiobia lawsonianae de Meijere on seeds of Chamaecypais lawsoniana (A. Murray) Parlatore survived at 48 mg/liter Larvae of M. chamaecyparidis Kamijo, Craneiobia lawsonianae, and Janetiella siskiyou Felt survived after fumigation with 48 mg/liter of methyl bromide (MB) for 4 hours under reduced pressure of 125 mm mercury at 21.6- 26.7 J. siskiyou also survived 16 mg/liter of MB for 24 hours at NAP. Effective dosages with the mixture were at 01' above 54 mg/liter of CS2 for the larvae of all species tested.
Document Type: Research Article
Publication date: August 1, 1971
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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.