Abstract
The results of studying The effect of host kind ( pistachio, Nuts, Walnut and Kazo) and exposure time to sub-lethal concentration of ( Buprofezin, Cyromazin and Lufenuron) or Toxicity to the larvae of P. interpunctella showed the high mean mortality reached 100% in larvae reared on Cyromazin treated pistachio under continuous exposure . while the sub-lethal concentration of Lufenuron and Cyromazin forbid the larvae reared on pistachio to transfer to pupa under continuous exposure condition , also the sub-lethal concentration of Lufenuron inhibit the eclosion of anults from the pupa on all hosts. The results revealed the superior effect of Lufenuron in controlling the larvae of P. interpunctella in comparison with the rest of insect growth regulators.
