|
Abstract
|
Chemical pesticides are widely used in pests control including stored product pests, and indiscriminate use of which has
caused problems such as environmental pollution, pest resistance to the pesticides as well as undesirable effects on human
and non-target organisms. In search for alternative conventional pesticides, plant essential oils have been widely investigated.
In the study, lethal effects of three plant essential oils from seeds of Petroselinum sativum Hoffmann, Satureja sahendica
Bornm and Heracleum persicum Desf. were evaluated on the adults of Callosobruchus maculatus (F.) at 27±1ºC, 65±5% RH
and a photoperiod of 16:8 (L:D) hour. The LC50 values of P. sativum, S. sahendica and H. persicum for their fumigant
toxicity were 488.43, 22.42 and 227.25 ìl/l air after 24 hours, respectively. Relative activity values of the essential oils
revealed that S. sahendica with the amount of 21.79% is the most toxic compared to the others. Also, LT50 values were
achieved 10.91, 14.89 and 12.65 h for P. sativum, S. sahendica and H. persicum, respectively. Considering the upper and
lower fiducial limits, there was not any significant difference between the LT50 values due to the high rate of overlapping
observed in the study.
|