Residues of DDT and Endrin in Soil and on Vegetables Grown on Land Following Insecticide Treated Cotton PDF Download
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Author: Minter Dupree
Publisher:
ISBN:
Category :
Languages : en
Pages : 146
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Author: Minter Dupree
Publisher:
ISBN:
Category :
Languages : en
Pages : 146
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Author: Georgia Entomological Society
Publisher:
ISBN:
Category : Beneficial insects
Languages : en
Pages : 500
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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:
Publisher:
ISBN:
Category :
Languages : en
Pages : 664
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Author: United States. Environmental Protection Agency
Publisher:
ISBN:
Category : DDT (Insecticide)
Languages : en
Pages : 316
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Author: C. Edwards
Publisher: Springer Science & Business Media
ISBN: 1461589428
Category : Science
Languages : en
Pages : 550
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Book Description
The persistent organic pesticides have saved millions of lives by controlling human disease vectors and by greatly increasing the yields of agricultural crops. However, in recent years man has become ever more conscious of the way in which his environment is becoming increasingly polluted by chemicals that may harm plants, animals or even himself. Amongst these chemicals the organochlorine insecticides have been well to the fore as a major cause of anxiety to ecologists, not only because they persist so long, but also because of the readiness with which they are taken up into the bodies of living organisms, especially the fatty tissues of both animals and humans. The extent and seriousness of the potential hazards due to these chemicals still remains to be fully defined. Our information on the occur rence of residues in the various parts of the environment is very uneven and localized. For instance, whereas we have a great deal of data on residues in North America, we know virtually nothing about the extent of pesticide contamination in Africa, South America and much of Asia, although large amounts of organochlorine insecticides have been used in these areas.
Author: Maria Luisa Dinamarca
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 248
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Author: L. I. Butler
Publisher:
ISBN:
Category : Alfalfa
Languages : en
Pages : 5
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Author: Entomological Society of America. North Central Branch
Publisher:
ISBN:
Category :
Languages : en
Pages : 1166
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Author:
Publisher:
ISBN:
Category : Chlordan
Languages : en
Pages : 28
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