Preliminary field trials using the solid fumigant Basamid amended with selected additives

The effect of selected additives on decomposition of Basamid (3,5-dimethyltetrahydro-1,3,5,2H-thiadiazine-2-thione) to methylisothiocyanate (MITC), a potent fungicide for remedial control of wood decay, was evaluated in Douglas-fir pole stubs over 2 years. The addition of glucose, lignin, boron, ethanol, methanol, acetone, or water had little effect on MITC production from Basamid. The addition of copper sulfate or a pH 12 buffer significantly enhanced Basamid decomposition to MITC and resulted in MITC levels that exceeded those from metham sodium (32.7% sodium N-methyl-dithiocarbamate), a standard commercial treatment. These results suggest that Basamid may be used for preventing internal decay in utility poles.

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