Heptachlor Residues on Corn Stover in Relation to Dairy Cattle Feeding1
Authors: JOHNSEN, R. E.; DAHM, P. A.; RUSK, H. W.; FAIRCHILD, M. L.; FREEMAN, A. E.
Source: Journal of Economic Entomology, Volume 53, Number 1, February 1960 , pp. 19-22(4)
Publisher: Entomological Society of America
Abstract:A field of dent corn was treated with a granulated formulation containing 5% of heptachlor, at the recommended time and dosage (1 pound heptachlor per acre), for control of first-brood European corn borers, Pyrausta nubilalis (Hbn.). Corn samples were analyzed for heptachlor and heptachlor epoxide at intervals after insecticide application. Holstein dairy cows were pastured in this field after ear harvest and milk collected from them at regular intervals. Butter was made from this milk. Extracts of butterfat were analyzed colorimetrically for heptachlor epoxide. Because there was no significant difference between the absorbance values of control and test samples, it was concluded that no heptachlor epoxide was secreted in the milk of the test cows.
Document Type: Research Article
Publication date: February 1960
- 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.
- Editorial Board
- Submit a Paper
- Subscribe to this Title
- Information for Advertisers
- Visit this journal's homepage
- ingentaconnect is not responsible for the content or availability of external websites