Abstract:
Laboratory experiments were conducted at the college of agricultural s of Sudan University of science and technology to evaluate the lethal effect of Neem Azadirachta indica, Jimson weed Datura innoxia and Propolis on mealy bug ( phenacoccus solenopsis ) infesting okra fruit on this experiments three different weights from each powder were used (2.4.6gram).Were used in this study. The results showed that all weights of the plant leaves powder plants and propolis gave significantly higher mortality percentage of the mealy bug than the control after 24hours of exposure and also in infection percentage.
The high weight (6g) of powder Neem used in this study , caused mortality percentage 23,3% 36,6 % 53,3 % respective after 24 , 48 and 72 hours of exposure as for in infestation percentage can be 0% , 6,6% and 6,6% after 72 hours of exposure .
Gave high weigh from the leaves powder of jimson weed mortality percentage 26,6% 40% and 60 % after 24, 48 and 72 hours of exposure and high infestation percentage can be 10% after 72 hours of application.
The obtained results also revealed that the highest weight from the propolis gave mortality percentage 13,3% 16,6 % and 26,6% after 24, 48 and 72 hours of exposure and infected percentage can be 20% ,26,6% and 36,6% after 72 hours from exposure .
The high weight (6g) of powder mixed neem and jimson weed percentage (1:1) used in this study , caused mortality percentage 60% 63,3% and 73,3 % respective after 24 hours of exposure infected percentage there not infection through the three days of exposure .
