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Trials to Control Matsucoccus josephi (Homoptera: Margarodidae) with Fenoxycarb

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The effects of fenoxycarb, an insect growth regulator, on Matsucoccus josephi Bodenheimer & Harpaz, were studied on 3-yr-old artificially infested seedlings of Pinus Halepensis Mill. and P. Vrutia Ten. in greenhouses, and on naturally infested 10-yr-old P. halepensis stands. The treatments arrested the development of first and second instars before moulting, reduced the rate of crawler settlement, and caused 98% mortality when sprayed on settled 2-wk-old larvae. Marked mortality (87%) of female larvae was recorded when 0.5% fenoxycarb was applied at the time male third instars began to leave the plant for pupation. In greenhouse trials, treated seedlings survived, whereas untreated seedlings were killed or severely damaged by the scale. Aerial and ground spray applications in field trials reduced the scale population during the first year after treatment compared with a sharp population increase in the control trees. Results indicate that fenoxycarb may serve as an efficient population management agent of M. josephi by preventing the development of acute injury to P. halepensis stands and could be used to control outbreaks by other Matsucoccus spp.

Document Type: Research Article

Publication date: August 1, 1988

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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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