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Title: EFFECTS OF CARBONYL SULFIDE ON SITOPHILUS GRANARIUS, FUSARIUM AVENACEUM, FUSARIUM CULMORUM, AS WITH REGARDS TO POSSIBLE CORROSION ON COPPER

Author
item Plarre, Ruediger
item REICHMUTH, C - BERLIN, GERMANY

Submitted to: Controlled Atmosphere & Fumigation in Stored Products International Conference
Publication Type: Abstract Only
Publication Acceptance Date: 2/11/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: All life stages of Sitophilus granarius, as well as the fungi Fusarium avenaceum and Fusarium culmorum, were tested for their susceptibility to different times of exposure and concentrations of carbonyl sulfide (COS) at 20 degrees C and 70% R.H. Complete kill of S. granarius occurred at concentrations of 18 gm-3 COS for 120 hours or 32gm-3 COS for 72 hours. The eggs were most tolerant to the toxic gas, followed by pupae and adults. Larval stages were most susceptible to the fumigant. Sublethal dosages prolonged the developmental periods of the immature life stages. Lethal dosages on S. granarius caused growth inhibition in F. avenaceum and F. culmorum, though the fungi recovered fully after treatment. In the presence of high relative humidity COS was presumably degraded partly to H2S which caused corrosion on copper. Carbonyl sulfide being a possible alternative to methyl bromide is discussed.