Aerial Application of Insecticides to Control Spring Infestations of the Cereal Leaf Beetle on Small Grains1

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Five experiments were conducted in May and June 1963, using insecticides applied by aircraft against both adults and larvae of the cereal leaf beetle, Oulema melanopa (L.) , in Mlichigan and Indiana. Both toxicant and spray volume were tested on oats and wheat. Compounds studied included malathion, carbaryl, Bayer 39007 (o-isopropoxyphenyl methylcarbamate), Guthion® (O,O-dimethyl s- (4-oxo- 1,2.3-benzotriazin-3 (4H) -ylmethyl) phosphorodithioate), and dimethoate. Materials were evaluated both from field observation and assay of plants brought from the field to the laboratory.

The data show that 1 lb of active carbaryl was more effective than the same amount of malathion because of its persistent residual activity, its apparent ovicidal action, and equally high effectiveness when applied from an altitude of 50 ft. Carbaryl was more effective when combined with a sticker. The volume of spray applied, ranging from ½ gal to 5 gal per acre, did not appear to be signif1cant. Guthion was highly effective against larvae of the cereal leaf beetle. Bayer 39007, owing to formulation problems, cannot be judged by its performance in these studies. Dimethoate did not give satisfactory control.

Document Type: Research Article

Publication date: December 1, 1964

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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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