Carbon dioxide fumigation of Thrips tabaci in export onions

Autor: M.J. Bendall, C.W. van Epenhuijsen, B.B.C Page., A. Carpenter
Rok vydání: 2002
Předmět:
Zdroj: New Zealand Plant Protection. 55:303-307
ISSN: 1179-352X
1175-9003
Popis: As an alternative to chemical pesticides, elevated carbon dioxide atmospheres were examined as a method for controlling thrips on export onions. A replicated gas delivery system was used to deliver a constant supply of various concentrations of carbon dioxide (CO 2 ) to thrips- infested onions within sealable bags. Six CO 2 treatments - an air control and 15, 30, 45, 60 and 100% C0 2 , (all in balance air) - were applied for 6, 12, 24, 48 and 72 h. Mortality was 100% at CO 2 concentrations of 30% or more after at least 24 h. However, the control treatments also had a high level of mortality and although there were significant differences between the control treatment and the CO 2 treatments, these differences were not large.
Databáze: OpenAIRE