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Extracts from 56 species of plants in the Euro-Asiatic region were tested for larvicidal activity against the fourth larval instar of the mosquito Culex quinquefasciatus Say (Diptera: Culicidae). All plant extracts showed larvicidal activity after 24 h of exposure to the plant extracts in a maximal dose of 500 ppm. The extracts of the plants Otanthus maritimus and Ammi visnaga displayed the highest...
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