Phytotoxicity of Eight Insecticides to Some Nursery-Grown Ornamentals

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Insecticides were applied to nursery stock (canary island pine, Oriental arborvitae, Chinese elm, Indian laurel, Japanese pittosporum, firethorn, burford holly, Japanese spindle tree, Japanese privet, crape-myrtle, and oleander) to evaluate for phytotoxicity. The insecticides utilized were: acephate, aldicarb, chlorpyrifos, fenvalerate, methidathion, methomyl, oxamyl, and pirimicarb. Three applications were made at 4-wk intervals during the winter and summer and at 2-wk intervals during the fall. Insecticides were applied at the 1X (recommended), 2X, and 4X rates. No phytotoxicity resulted from 1X treatment rates but was observed at higher rates. Severe damage occurred on Nerium oleander L. treated with chlorpyrifos at the highest rate.

Document Type: Research Article

Publication date: February 1, 1980

More about this publication?
  • 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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