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Unformatted text preview: o Experimental: treatments assigned randomly to subjects • Why aren’t there more experiments? o Not ethical to feed people high levels of pesticides o What about organic diets? Long term? Impacts of Pesticides • DDT history and costs • DDT benefits • Current pesticides Alternatives to pesticides • In agriculture o Organic farming o Biological control – lady bugs o IMP (integrated pest management) o Genetically modified crops Used to diminish/eliminate pesticides and manage crops (look above) • Ecological Approach to pest management • Ex. Economic importance of squash in Ma o 40% of vegetable acreage o >%5 million for state o Butternut key crop o Cucumber beetle is major pest Perimeter Trap Crop Kills most beetles by only spraying trap crop...
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- Fall '08
- genetically modified crops, Pesticide