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1 June 2012 Effects of Phosphine Fumigation on Survivorship of Epiphyas postvittana (Lepidoptera: Tortricidae) Eggs
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Abstract

Light brown apple moth, Epiphyas postvittana (Walker), eggs were subjected to phosphine fumigations under normal atmospheric and elevated oxygen levels in laboratory-scale chamber experiments to compare their susceptibilities to the two different fumigation methods. In fumigations conducted under atmospheric oxygen at 5 and 10°C, egg survivorship decreased with increase in phosphine concentration but then increased at a concentration of 3,000 ppm; this increase was significant at 10°C. Based on egg survivorship data, phosphine fumigations conducted in a 60% oxygen atmosphere were significantly more effective than those conducted under atmospheric oxygen conditions. Oxygenated phosphine fumigations at 5 and 10°C killed all 1,998 and 2,213 E. postvittana eggs treated, respectively, after 72 h of exposure. These results indicate the great potential of oxygenated phosphine fumigation for the control of E. postvittana eggs.

© 2013 Entomological Society of America
Yong-Biao Liu, Samuel S. Liu, Gregory Simmons, Spencer S. Walse, and Scott W. Myers "Effects of Phosphine Fumigation on Survivorship of Epiphyas postvittana (Lepidoptera: Tortricidae) Eggs," Journal of Economic Entomology 106(4), 1613-1618, (1 June 2012). https://doi.org/10.1603/EC13050
Received: 25 January 2013; Accepted: 1 May 2013; Published: 1 June 2012
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