Dithiocarbamate Fungicides for Control of Pear Psylla

Authors: McMullen, R. D.; Jong, C.

Source: Journal of Economic Entomology, Volume 64, Number 5, 15 October 1971 , pp. 1266-1270(5)

Publisher: Entomological Society of America

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Among several dithiocarbamate compounds showing insecticidal activity against Psylla pyricolaFoerster, mancozeb 80% WP and DikarĀ® 80% WP (a 15:1 mixture of maneb plus dinocap) at 9.0 kg/ha are effective against all stages of nymphs, but not against eggs or adults. Toxicity of spray residues on foliage to newly hatched nymphs persists for several weeks. Control can be effected by maintaining adequate cover with spray residues, particularly on new foliage on which adults prefer to feed and oviposit. Mancozeb and Dikar have little effect on predaceous insects found on pear trees.

Document Type: Research Article

Publication date: October 15, 1971

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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