Acetaldehyde Toxicity to the Green Peach Aphid on Harvested Head Lettuce in High Carbon Dioxide or Low Oxygen Atmospheres

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Fumigation for 4 h with acetaldehyde (Aa) vapor in an atmosphere containing 25–35% carbon dioxide (C02) increased the mortality of Myzus persicae (Sulzer) ca. 3-fold as compared with Aa fumigation alone. All aphids were killed by treatment with 1% Aa in 50–60% CO2 or 1.5% Aa in 35% CO2 as compared to 32 and 92% mortality, respectively, in treatments without CO2, Fumigation with Aa vapor in a low oxygen (1–2%) atmosphere did not increase the mortality rate of the aphids.

Document Type: Research Article

Publication date: December 1, 1979

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