Carbon Dioxide under High Pressure as an Alternative in Ephestia kuehniella (Zeller) and Plodia interpunctella (Hübner) (Lepidoptera, Pyralidae) Control

L. MARKOVA
Plant Protection Institute, BG-2230 Kostinbrod, Bulgaria

Abstract

MARKOVA, L., 2001. Carbon dioxide under high pressure as an alternative in Ephestia kuehniella (Zeller) and Plodia interpunctella (Hübner) (Lepidoptera, Pyralidae) control. Bulg. J. Agric. Sci., 7: 285-289

The use of carbon dioxide (CO2) under pressure allows for economically efficient control of storage pests without toxic substances and harmful residues in products and materials treated.
The effect of CO2 under pressure of 20 bar was tested against eggs of Ephestia kuehniella (Mediterranean flour moth) and Plodia interpunctella (Indian meal moth), always found in warehouses and processing plants of Bulgarian food industry. The investigations were carried out on four egg ages (0-24, 24-48, 48-72 and 72-96 h) and fumigation duration of 10, 20 and 30 min. In both types of moths, egg embryo death was reported after 30-minute effect at the age of 24-96 h.

Key words: Ephestia kuehniella, Plodia interpunctella, carbon dioxide, high pressure