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The "first generation" pesticides were largely highly toxic compounds, such as arsenic and hydrogen cyanide. Their use was largely abandoned because they were either too ineffective or too toxic.
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people.oregonstate.edu/~muirp/pesthist.htm
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Pesticides are substances or a mixture of substances, of chemical or biological origin, used by human society to mitigate or repel pests such as bacteria, nematodes, insects, mites, mollusks, birds, rodents, and other organisms that affect food production or human health. ... History of Pesticides...
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www.pollutionissues.com/Na-Ph/Pesticides.html
www.pollutionissues.com/Na-Ph/Pesticides.html
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It and several other pesticides--including 2, 4, 5-T (Agent Orange), Dieldrin, Aldrin, and Mirex--did not appear to constitute imminent health threats. This action infuriated many environmentalists. ... EPA History Home...
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www.epa.gov/history/publications/formative6.htm
www.epa.gov/history/publications/formative6.htm
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The U.S. Department of Agriculture, the federal agency with responsibility of regulating pesticides before the formation of the U.S. Environmental Protection Agency in 1970, began regulatory actions in the late 1950s and 1960s to prohibit many of DDT's uses because of mounting evidence ... DDT – A Brief History and Status...
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www.epa.gov/pesticides/factsheets/chemicals/ddt-brief-h...
www.epa.gov/pesticides/factsheets/chemicals/ddt-brief-history-status.htm
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Throughout history, various types of pests, such as insects, weeds, bacteria, rodents, and other biological organisms, have bothered humans or threatened human health. People have been using pesticides for thousands of years to try to control these pests.
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www.chemistryexplained.com/Ny-Pi/Pesticides.html
www.chemistryexplained.com/Ny-Pi/Pesticides.html
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Pesticide - Wikipedia, the free encyclopedia
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A pesticide is a substance or mixture of substances used to kill a pest. A pesticide is any substance or mixture of substance intended for: - preventing, destroying, repelling or mitigating any pest...
en.wikipedia.org/wiki/Pesticide
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In 1939, a chemist in Switzerland developed a new compound that would profoundly change the lives of farmers and ordinary folks around the globe. ... Wessels Living History Farm - York Nebraska ... Wessels Living History Farm...
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www.livinghistoryfarm.org/farminginthe30s/pests_05.html
www.livinghistoryfarm.org/farminginthe30s/pests_05.html
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History Of Pesticides ... Pesticides were initially used haphazardly on any available pest and the effective pesticide was used. Often gardeners believed that the fouler the smell and taste, the more effective the pesticide! ... 1500 BC Egyptians produce insecticdes against lice, fleas and wasps.
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www.chm.bris.ac.uk/webprojects2000/aroshier/history.htm...
www.chm.bris.ac.uk/webprojects2000/aroshier/history.html
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Case History:; Pesticide Formulation and Packaging ... Analysis of samples, collected by a conventional automatic auger tube sampler, installed in the bagging unit feed hopper, showed variations in active ingredient concentrations in excess of allowable limits. Adjustments to sampling frequency and auger tube configuration...
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www.grsei.com/pesticides.html
www.grsei.com/pesticides.html
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