Anais da Sociedade Entomológica do Brasil (1997) 26, 115-120

Lauro Morales, Flávio Moscardi, Daniel R. Sosa-Gómez, Fábio E. Paro and Ivanilda L. Soldorio (1997)
Enhanced activity of Anticarsia gemmatalis Hüb. (Lepidoptera: Noctuidae) nuclear polyhedrosis virus by boric acid in the laboratory
Anais da Sociedade Entomológica do Brasil 26 (1), 115-120
Abstract: Boric acid concentrations (0.02, 0.03, 0.045, 0.067 and 0.101 g/100 ml of diet) were evaluated in combination with the Anticarsia gemmatalis Hub. nuclear polyhedrosis virus (AgNPV) for enhanced viral activity against the insect. Seven days after inoculation, the median lethal concentration (LC₅₀) was 1.52 x 10⁵ for the AgNPV alone and 7.95 x 10² for the NPV mixed with 0.045 g of boric acid/ 100 ml of diet. At subsequent evaluation dates (9, 11 and 14 days after inoculation) LC₅₀'s for NPV+boric acid were ca. 4x lower than those observed for the NPV alone. The median lethal time (LT₅₀) was 13.6 days when the NPV was used alone, while, when in mixture with increasing concentrations of boric acid, LT₅₀ values ranged from 13.7 days (boric acid at 0.028/100 ml of diet) to 7.4 days (boric acid at 0.101g/ml of diet). Therefore, boric acid added to the AgNPV significantly increased A. gemmatalis larval mortality and shortened mortality time by the pathogen.
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Database assignments for author(s): Daniel R. Sosa-Gomez, Flavio Moscardi

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
formulation/storage of bioagents

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Anticarsia gemmatalis
Alphabaculovirus angemmatalis (entomopathogen)