Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4517476 | Journal of Stored Products Research | 2008 | 6 Pages |
Abstract
Fumigations were conducted using a continuous flow-through laboratory process to maintain constant concentrations of ethyl formate and low levels (<0.8%) of respiratory carbon dioxide. The procedure minimised the effects of sorption by exposing test insects without media and minimised the effect of carbon dioxide by use of continuous flow. The concentration×time (Ct) products of ethyl formate for adult Sitophilus oryzae, Tribolium castaneum and Rhyzopertha dominica at 25 °C and 70% relative humidity for the 6 h exposure were, respectively: (1) LD50 107.8, 108.8 and 72.8 mg h L−1 and (2) LD99.5 207.4, 167.1 and 122.2 mg h L−1. Endpoint mortality was reached within 24 h of initial exposure.
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Authors
Ni Xin, Y.L. Ren, R.I. Forrester, Xue Ming, Daphne Mahon,