European Corn Borer, Green Peach Aphid and Cabbage Looper Control on Peppers
Tests employing experimental "Slosser"-type, crop spray-boom and an air-blast sprayer showed that weekly applications of DDT at 1..5' and 2 lbs. per acre, respectively, starting in early .July and continuing until the first week of September, controlled the European corn borer, Ostrina nubilalis (Hübner), on peppers.
In a preliminary study of the combined effects on yields of insect control, disease control, and improved soil fertility the air-blast sprayer was used to apply the pesticides and the different fertilizer treatments were applied as side dressings. Yields in the sprayed plots ranged from 8 to 12 tons 01' fruit per acre which was from 2 to 4 tons higher than on the unsprayed. Greater corn borer infestations occurred in unsprayed peppers at the high fertility lever the n at the lower levels.
Weekly DDT sprays at 1.5 Ibs. per acre in the row-cropsprayer test, starting when nightly collections by a blaek-light trap first reached .1, 10, and 20 moths gave ll5%. 71% and 37% control, respectively. In this same test DDT also gave excellent control of the cabbage looper, Trichopulusia ni (Hübner), when weekly applieations were started either .June 30 .July 7, and when applied either with 01' without a sticker, but control was significantly poorer with weekly sprays beginning August 15 or later. Populations of the green peach aphid, Myzus persicae (Sulzer), were very high in the DDT-treated plots. The addition of Thiodan® (6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro- 6,9-methano-2,4,3-benzodioxathiepin-3-oxide) at 0.,5 lb. per acre in three applications gave good aphid control, hut the addition of mineral oil (70-see.) in four applications did not.
Document Type: Research Article
Publication date: June 1, 1962
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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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