Aerial Sprays Reduce Black Scale on Florida Citrus

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Saissetia oleae (Bernard) was reduced significantly on Florida citrus with aerial treatments timed to coincide with occurrence of the maximum number of scale crawlers on peripheral foliage of the tree canopy.

Azinphosmethyl and methidathion at 2.5 lb AI/acre provided excellent reduction while 2.5 lb AI of either parathion or Cidial® (ethyl mercaptophenylacetate S ester with O,O-demethyl phosphorodithioate) and 1.25 lb AI of methidathion were less effective.

In 1 test, azinphosmethyl and the high rate of methidathion permitted increase in populations of the citrus red mite, Panonychus citri (McGregor). In another test, azinphosmethyl and the low rate of methidathion depressed activity of Scutellista cyanea Motschulsky, a predator of black scale eggs. Neither parathion nor Cidial influenced citrus red mite or S. cyanea, respectively.

Document Type: Research Article

Publication date: June 1, 1975

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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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