The Control of the Pea Aphid in Alfalfa Fields With Special Reference to the Chain Drag
Author: SMITH, ROGER C.
Source: Journal of Economic Entomology, Volume 25, Number 2, April 1932 , pp. 157-164(8)
Publisher: Entomological Society of America
Abstract:This paper summarizes the history of the pea aphid (Illinoia pisi Kalt) as an alfalfa pest in Kansas, results of the attacks of this insect on alfalfa, and experiments on artificial control.Nicotine sulphate sprays and dusts, use of harrows, field roller, cultipacker, and the brush drag did not give satisfactory control. Burning, while a theoretically correct control, is difficult, expensive, and of doubtful value. The use of Cyanogas flakes broadcasted in or at the margins of spots at about 30 lbs. or more to the acre, and the aphids then jarred to the ground, has given excellent results. Two aphid dozers, an original one, and one of Doctor Dudley's machines were tested for four seasons. Collections of 30 to 90% of the aphids have been made, depending on the height of the alfalfa. A new control implement, called a chain drag, has been devised. It has been used in only one outbreak where the infestation was reduced 50 or 60% by one treatment. The drag is inexpensive to build and operate. It is regarded as a promising control implement for this insect and possibly for some other insect pests occurring in alfalfa fields.
Document Type: Editorial
Publication date: 1932-04-01
- 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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