Sujiol, a new potent insect growth regulator from Juniperus communis L. against last instar larvae of Spodoptera litura

Sujiol, a terpenoid isolated from the berries of Juniperus communis, exhibi ted growth regulating activity in the last instar larvae of Spodoptera litu ra. The larvae were treated with 0.1, 0.25, 0.5, 0.75, 1, 2 and 4% concentr ations of Sujiol, in solvent acetone. Formation of non-viable adults, inter ference in ecdysis and development of mosaics were the important morphogene tic peculiarities observed. The resultant forms were ruled out from further development and reproduction.