Systemic Insectidal Action in the Cortical Tissues of Elm Twigs1

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Two vinyl phosphates which contain carboxyamide groupings (Shell 3562 (2-dimethylcarbamoyl-1-methylvinyl dimethyl phosphate) and phosphamidon) were found to be effectively localized in the cortical twig tissues of elm trees following trunk implantation. Shell 3562 prevented niches from exceeding 3.0 mm. for 15 and 20 days after treatment, respectively, with tree dosages of 6 and 18 gm. The method of assay involved feeding-niche length and beetle mortality of Scolytus multistriatus (Marsh.) when exposed to twigs from treated trees.

The properties responsible for the above action of the systemics are apparently one or both of the following: (1) a high water solubility and (2) a phosphate or phosphorothiolate rather than a phosphorothionate or phosphorodithioate compound.

Document Type: Research Article

Publication date: December 1, 1960

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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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