• Korean journal of applied entomology
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• v.43 no.1
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• pp.55-60
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• 2004

This experiment was conducted to improve activity of Spodoptera litura Nucleopoly-hedrovirus (SINPV) combined with organic and functional matters. In combination of SINPV mixed with organic matters, LT$_{50}$ values of SINPV 1.0${\times}$10$^{5}$ PIBs/$m\ell$ combined with boric acid of 2,000 ppm were 4.5 days. It was 1.5 days shorter than SINPV 1.0${\times}$10$^{5}$ PIBs/$m\ell$ alone. The body weight of larva infected with SINPV 1.0${\times}$10$^{5}$ PIBs/$m\ell$ combined with boric acid of 2,000ppm was not increased, and S. litura was completely dead in 7 days after treatment. It suggested that addition of boric acid in SINPV application enhanced the pathogenicity against S. litura larvae. In laboratory experiment of combination of SINPV with functional matters, LT$_{50}$values of SINPV 1.0${\times}$10$^4$ PIBs/$m\ell$ alone were 7.3 days, but those of SINPV 1.0${\times}$10$^4$ PIBs/$m\ell$ with electrolyzed oxidizing water, pyroligneous liquor or kitosan were 10.4, 9.3 and 11.2 days, respectively. Functional matter could be suppressed the insecticidal activity of SINPV