PHYTOTOXIC POTENTIAL OF SOME INDIGENOUS PLANT EXTRACTS AS GROWTH INHIBITORS AGAINST TRIBOLIUM CASTANEUM.

In the current study some selected plants (Datura stramonium, Peganum harmela and Artemisia gimilini) were tested against Tribolium castaneum by the filter paper impregnation method. The selected concentrations of each plant are 5 %, 2.5 %, 1.2 5%, 0.63 % and 0.315 % which are then converted into |g/cm2 for further estimations. After the conversion the values observed as 1273.88 μg/cm², 636.94 μg/cm², 318.47 μg/cm², 160.5μg/cm², 80.25 μg/cm² μg/cm² were tested for 24, 48, 72, 96, 120, 144 and 168 hours respectively. The percentage mortality for each single and combined extracts was procured. Highest mortality (78.57±2.45) was observed by the combined extract of D. stramonium and P. Harmela while lowest (61.43±5.73) by P. Harmela treated with 1273.88 μg/cm². The highest mortality (62.85±6.81) was observed by combined extract of D. stramonium and P. Harmela however, lowest mortality (45.71±3.41) by P. Harmela treated with 636.94 μg/cm². The maximum mortality (44.3±5.63) was caused by combined extract of D. Tramonium, P. Harmela and A. Gimilini whereas the lowest (34.29±3.11) by P. Harmela treated with 318.47 μg/cm². The highest mortality (38.57±3.55) was observed by combined extract of D. stramonium and A. Gimilini whereas the lowest (28.57±3.92) by D. stramonium treated with 160.5 μg/cm². The maximum mortality (27.14±4.54) caused by combined extract of D. stramonium and A. Gimilini while the lowest (19.0±2.96) by combined extract of D. Tramonium, P. Harmela and A. Gimilini. Biochemical estimation of combined extract of D. Tramonium, P. Harmela and A. Gimilini 68.48 % decreases the level of total Protein. While A. Gimilini decreases 64.19 % Level of amylase. Whereas combined extract of D. stramonium, P. Harmela and A. Gimilini decreases 55.73 % Level of Cholinesterase. It concluded that the combined extracts were more effective and more toxic as compare to single plant extract. [ABSTRACT FROM AUTHOR]