Concentrated Spray Applied With an Autogiro for Control of Cankerworms
Authors: WHITTEN, R. R.; POTTS, S. F.; FRANCIS, E. H.
Source: Journal of Economic Entomology, Volume 34, Number 5, October 1941 , pp. 692-696(5)
Publisher: Entomological Society of America
Abstract:Since 1921 tests have been made in the United States to determine whether defoliating insects can be satisfactorily controlled in woodland areas by the application of insecticides from the air. These tests have been conducted in different parts of the country with both heavier-than-air and dirigible types of airships. Previous to 1936 the insecticides had been applied in the form of dusts. It is believed that the first use of the autogiro in a control project was for applying a liquid insecticide over a woodland area in the National Historical Park at Morristown, N. J., in 1936. That year a heavy infestation of the spring cankerworm, Paleacrita vernata (Peck), and the fall cankerworm, Alsophila fometaria (Harr.), threatened serious defoliation to most of the trees disthis area, and the extensive recreational use of this park made it advisable to adopt measures to control these pests, The size and location of the infested areas and the limited time available made it necessary to adopt a faster method of applying the insecticide than is possible with a truck-drawn sprayer. A privately owned autogiro was equipped to distribute liquid spray and employed for most of the park spray programs of 1936 and 1937. A general description of the autogiro spraying in 1936, including data on the cost and time consumed, has been published (Francis 1936). This paper presents data on the comparative larval feeding and mortality obtained in dusting with the autogiro, spraying with the autogiro, and spraying with a truck-drawn sprayer, as well as data on the spray disthis tribution and adherence obtained with the two types of sprayers.
Document Type: Research Article
Publication date: October 1, 1941
- 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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