Impact of Cereal Leaf Beetle Larvae on Yields of Oats1
Authors: WILSON, CURTIS M.; TREECE, ROBERT E.; SHADE, RICHARD E.; DAY, KELLY M.; STIVERS, RUSSELL K.
Source: Journal of Economic Entomology, Volume 62, Number 3, June 1969 , pp. 699-702(4)
Publisher: Entomological Society of America
Abstract:The impact of Oulema melanopus (L.) larvae on grain yields of oats was investigated in the field at New Carlisle, Indiana, in 1966 and 1968. A gradient of larval population levels was established by using varying rates of malathion in spray applications. A regression analysis of the data showed that a cereal leaf beetle larva completing development to pupation consumed 20% of the leaf surface of I stem. However, the degree of loss in yield this amount of feeding caused was influenced by the stage of development of the crop. Loss in yield ranged from 2.29 to 4.10 bushels per acre per larva per stem infestation. When infestation occurred in the 2- to 3-inch seedling stage, highest losses per larva per stem occurred. Comparable infestations caused less loss in yield when the crop had attained 6 inches of vigorous growth before it became infested.
Document Type: Research Article
Publication date: June 1, 1969
- 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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