Abstract
In order to evaluate the toxic effects of essential oil from rhizomes of Acarus calamus L., different doses (30, 50 and 70 IJL) were tested against grubs of Trogaderma granarium (Everts). Percent mortality for exposure periods of 3, 5 and 7 days was observed. Post treatment population build up was observed at 60 days. The exposure period appeared to be the most important factor affecting the toxic effect of the vapours of the Acarus oil rather than the dosage. Insect showed 11.10, 22.59 and 44.70 % morality at exposure time of 3, 5 and 7 days, respectively, whereas 22.18, 24.44 and 27.77 % mortality was observed with 30, 50 and 70 IJL of oil respectively. Population build up was reduced both with increase in dose of Acarus calamus oil and exposure time.
