Abstract
The results of applying new method in calculating the percent of activation , potentiation and Synergism added on mortality percentage of the mixture Deltamethrin 2.5% Ec + Ground nut oil) and the mixture components separately in controlling the 3th instar of larvae of Plodia interpunctella (Hubn.) , show that the Mean total mortality reached 58.2% which represents the mean mortality percentage of Deltamethring 18.95% and oil mortality percentage 12.19% (Potentiation and Synergism percentage of oil which reached 27.05 % . The results indicated that the ground nut oil exhibited a potentiation and synergism effect when mixed with Deltamethrin . While the results of mixing deltamethrin with Piperonyl butoxide revealed that the Mean of total Mortality percentage reached 40.86 % which represents the total of Deltamethrin mortality percentage 27.% and Piperonyl butoxide mortality percentage zero % ( No Potentiation ) and Synergism effect of Piperonyl butoxide which reached 13.86%.
