THE POTENTIAL OF SUBCULTURE <i>Helicoverpa armigera</i> NUCLEAR POLYHEDROSIS VIRUS (<i>Ha</i>NPV) TO BE UTILIZED AS AN ALTERNATE SYNTHETIC INSECTICIDES TO CONTROL INSECTS PESTS IN CABBAGES PLANTATION (<i>Brassica oleracea</i> var. capitata L)
Abstract
Subculture Helicoverpa armigera Nuclear Polyhedrosis Virus (HaNPV) is an entomopathogenic viruses isolated from cadaver of Helicoverpa armigera larvae, and was succesfully produced in Spodoptera litura larvae as an alternate host. These viral agent have been applied to control the population of three species insects pests Spodoptera litura, Crocidolomia pavonana and Plutella xyllostella which were infested in Cabbages Plantation. The concentration of virus of 4 x 107 Polyhedral/ml was sprayed in cabbage leaves 24 hours before infested of larval and every four days after. The research used randomized design which consisted of factor (three species of second instar larvae, S. litura, C. pavonana, P. xyllostella) and eight replications. The result showed that the three species of larval were sensitive against subculture HaNPV infection. The mortality of each larval species (S. litura, C. pavonana and P. xyllostella) were 100%, 97.5% and 98.7%. Subculture HaNPV can be utilized to control the population of three spesies of insects pests in Cabbage Plantation.
Keywords : Subculture HaNPV, Polyhedral
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