Residues of DDT, Dieldrin, and Heptachlor in Earthworms During Two Years Following Application PDF Download
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Author: Charles D. Gish
Publisher:
ISBN:
Category : Earthworms
Languages : en
Pages : 24
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Book Description
Study plots were treated with specific quantities of active ingredient per hectare with either DDT, dieldrin, or heptachlor. Earthworms and soils were sampled from each treated plot at specific time intervals (up to 2 years after treatment) and analyzed by gas chromatography for specific pesticide residues. Individual and total metabolites in soils and earthworms tended to increase linearly with increasing levels of application. In soils, losses of specified biocides varied by species over time ranging from no significant loss to a decrease in heptachlor during the two years following application. In earthworms, maximum residues usually occurred 2-4 months after application, then declined. During the decline, residue levels were cyclic: levels elevated from late spring to early fall and depressed from late fall to early spring. High levels (usually May) and lows (usually January) coincided with seasonal high and low activity of eathworms.
Author: Charles D. Gish
Publisher:
ISBN:
Category : Earthworms
Languages : en
Pages : 24
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Book Description
Study plots were treated with specific quantities of active ingredient per hectare with either DDT, dieldrin, or heptachlor. Earthworms and soils were sampled from each treated plot at specific time intervals (up to 2 years after treatment) and analyzed by gas chromatography for specific pesticide residues. Individual and total metabolites in soils and earthworms tended to increase linearly with increasing levels of application. In soils, losses of specified biocides varied by species over time ranging from no significant loss to a decrease in heptachlor during the two years following application. In earthworms, maximum residues usually occurred 2-4 months after application, then declined. During the decline, residue levels were cyclic: levels elevated from late spring to early fall and depressed from late fall to early spring. High levels (usually May) and lows (usually January) coincided with seasonal high and low activity of eathworms.
Author: Emily D. Copenhaver
Publisher:
ISBN:
Category : Hazardous substances
Languages : en
Pages : 240
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 240
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Author: Leigh M. Couling
Publisher:
ISBN:
Category : Hunting surveys
Languages : en
Pages : 298
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Book Description
A mail questionnaire survey of waterfowl hunters is conducted each year in the United States to provide information on waterfowl kill and hunter activity. We carried out a study using data from the 1971-73 and 1972-73 hunting seasons to determine the effectiveness of the present U.S. sampling and estimation techniques, and a number of modifications in both sampling and analysis is recommended.
Author: George W. Ware
Publisher: Springer Science & Business Media
ISBN: 1461228905
Category : Science
Languages : en
Pages : 168
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Book Description
Reviews of Environmental Contamination and Toxicology publishes authoritative reviews on the occurrence, effects, and fate of pesticide residues and other environmental contaminants. It will keep you informed of the latest significant issues by providing in-depth information in the areas of analytical chemistry, agricultural microbiology, biochemistry, human and veterinary medicine, toxicology, and food technology.
Author:
Publisher:
ISBN:
Category : Pesticides
Languages : en
Pages : 1046
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Author:
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ISBN:
Category : Fishes
Languages : en
Pages : 482
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Author: K.C. Jones
Publisher: Springer Science & Business Media
ISBN: 9400943296
Category : Science
Languages : en
Pages : 348
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Book Description
ENVIRONMENTAL MANAGEMENT SERIES The current expansion of both public and scientific interest in environ mental issues has not been accompanied by a commensurate production of adequate books, and those which are available are widely variable in approach and depth. The Environmental Management Series has been established with a view to co-ordinating a series of volumes dealing with each topic within the field in some depth. It is hoped that this Series will provide a uniform and quality coverage and that, over a period of years, it will build up to form a library of reference books covering most of the major topics within this diverse field. It is envisaged that the books will be of single, or dual, authorship, or edited volumes as appropriate for respective topics. The level of presentation will be advanced, the books being aimed primarily at a research/consultancy readership. The coverage will include all aspects of environmental science and engineering pertinent to man agement and monitoring of the natural and man-modified environment, as well as topics dealing with the political, economic, legal and social con siderations pertaining to environmental management. J. CAIRNS and R.M. HARRISON v Preface The behaviour and effects of chemicals in our environment is a fascinating subject for scientific investigation. Furthermore, an understanding of these processes is of fundamental importance in our modern world, and should enable us to understand and limit the adverse effects of pollutants.
Author: University of California, Davis. Food Protection and Toxicology Center
Publisher:
ISBN:
Category : Agricultural chemicals
Languages : en
Pages : 300
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Author: David Pimentel
Publisher:
ISBN:
Category : Pesticides
Languages : en
Pages : 176
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Book Description
