Reduction in Spread of Mycoplasma-like Organism-Associated Lethal Decline of the Palm, Veitchia merrilli, by Use of Insecticides

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Abstract:

An experiment was conducted in southern Florida in an area where Manila palms, Veitchia merrillii (Becc.) H. E. Moore, were infected with mycoplasmalike organism-associated lethal decline. Manila palms were given foliar applications of insecticides (diazinon AG 500 at 13 ml/10 liters and dimethoate 400 at 26.4 ml/10 liters) biweekly for 15 months. Myndus crudus (Van Duzee) (Homoptera: Cixiidae) was the most abundant auchenorrhynchous insect sampled from the leaves of Manila palms. There were fewer M. crudus in samples from palms treated with diazinon than in samples from untreated palms (P <0.05). The apparent rate of spread of the disease declined significantly in the diazinon and dimethoate-treated plots but not in the untreated plots (P <0.05). The results suggest that a leaf-feeding insect, possibly M. crudus, is the vector of the disease agents.

Document Type: Research Article

Publication date: April 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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