Concentration-time relationship for fumigant efficacy of sulfuryl fluoride against the Formosan subterranean termite (Isoptera: Rhinotermitidae)
1989
Su, N.Y. | Osbrink, W.L.A. | Scheffrahn, R.H.
The Formosan subterranean termite, Coptotermes formosanus, was exposed to sulfuryl fluoride over a range of six accumulated concentrations (10-60 milligrams h/liter) and 12 exposure times (1-96 h), to determine the concentration-time relationship on termite mortality. Time threshold in sulfuryl fluoride fumigation was less than 1 h. The results demonstrated that C(0.93t = k was satisfactory model to describe the response relationship in fumigant efficacy of sulfuryl fluoride against this termite. Because the toxicity index (n = 0.93) approximates to 1, the assumption that the exposure time is equally important to concentration is functionally valid.
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