Efficiency of absolute oils of olive fruits and carnation flowers as new formulation against tribolium castaneum (Herbst)‎ And Rhizopertha Dominica (F.)‎

Abstract EN

Olive and carnation absolutes are new forms extracted from the concrete produced after extraction of oil.

Repellency and fumigation bioassays are of the best methods which used to evaluate the absolutes of olive and carnation against T.

castaneum and R.

dominica adults.

Results obtained showed that the repellent and fumigant activities of carnation had the strongest effect to the two tested insects in comparison with that of olive.

Moreover, the lowest concentration of carnation (5 ppm) achieved 50, 100% repellent activity compared to that of olive which caused zero and 35% after 24 h against T.

castaneum and R.

dominica, respectively.

Additionally, the affection of oil increased with increasing of exposure period.

However, the repellent of the two absolutes against the two insects started to decrease after 24 h post treatment.

The time needed for oil to cause LT50 was also estimated at the highest concentration which achieved nearly 100 % mortality (449.95 mg/170 cm3) for both carnation and olive.

Basedon LT 50 values the carnation oil was the premier compared to the olive with LT 50 values of 0.166, 0.01 and 0.688, 50.166 h against R.

dominica and T.

castaneum , respectively.

Finally, the present study suggests application the absolute oils against stored product insects where they are very cheap, available and easy affordable and they may introduce the program of integrated pest management.