“…At the end of incubation, the number of mobile nauplii (alive) was counted by using a magnifying glass to determine the 50 % lethal concentration after 24 h of incubation (24h-LC50), efficient concentration of essential oil that is required to kills 50 % of a test animals. The 24h-LC50 were calculated as Mercury (Hg) (mg kg À 1 ) nd 0.001-0.04 *: soil sample was air-dried and sieved to < 2 mm for physico-chemical properties, including pH (1/2.5; soil/distilled water, after 1 h stirring), electrical conductivity (1/5 soil/distilled water, after 1 h stirring), particle size distribution [92] , total nitrogen (Kjeldahl procedure), total phosphorus [93] , Organic matter (OM) by loss on ignition at 550 °C for 8 h, and total organic carbon by dividing the OM content by a factor of 1.724 [94] ; **: United States Department of Agriculture (USDA-1964); ***: C/N ratio < 12 ) fast mineralization ) more nutrients available to plant;****: The total Na, K, Ca, Mg, Zn, Cu, Fe, Al, Mn, Pb, Cr, Ni, As, Co and Cd contents were determined by flame atomic absorption spectrometry after digestion of the sample soil according to Terfi and Sadi [95] . Hg content was determined by Mercury Analyzer (Nippon Instruments Corporation/Japan) according to Terfi et al [96] .…”