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Subculture Helicoverpa armigera nuclear polyhedrosis virus (HaNPV) is an entomopathogenic virus isolated from cadaver of Helicoverpa armigera larvae, and is successfully produced in Spodoptera litura larvae as an alternate host. These viral agents have been used to control the population of three species insect pests Spodoptera litura, Crocidolomia pavonana and Plutella xyllostella, which were infested in cabbages plantation. The concentration of virus of 4  10 polyhedra/mL was sprayed in cabbage leaves 24 h before infested of larva and every four days after. The research used randomized design which consisted of one factor (three species of second instar larvae, S. litura, C. pavonana, P. xyllostella) and eight replications. The result showed that the three species of larvae were sensitive against subculture HaNPV infection. The mortality of each larval species (S. litura, C. pavonana and P. xyllostella) was 100%, 97.5% and 98.7%, respectively. Subculture HaNPV can be utilized to control the population of three species of insect pests in cabbage plantation.

journal of agricultural science and technology. b

The Potential of Subculture Helicoverpa armigera Nuclear Polyhedrosis Virus as an Alternate Synthetic Insecticides to Control Insect Pests in Cabbages Plantation (Brassica oleracea var. capitata L.)