Effect of Artemisia vulgaris Rhizome Extracts on Hatching,Mortality, and Plant Infectivity of Meloidogyne megadora |
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Authors: | S dos S da R Costa M S N de A Santos M F Ryan |
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Abstract: | The activity of an ethanolic rhizome extract of Artemisia vulgaris against hatching, mortality, host plant infectivity, and galling of the root-knot nematode Meloidogyne megadora was investigated. The extract inhibited egg hatch (50% inhibition by 2.35mg/ml) and caused second-stage juvenile mortality (50% lethality at 12 hours'' exposure to 55.67 mg/ml), both in a dose-dependent manner. Nematode infectivity on Phaseolus vulgaris ''Bencanta Trepar'', a susceptible host, decreased in a dose-responsive manner (50% inhibition at 6.28 hours exposure to extract). When applied directly to the soil, the extract reduced root galling on a susceptible host in a dose-dependent manner (50% inhibition by 32.36 mg/ml). After dilution in distilled water, the extract did not lose activity when stored in the dark at 25°C for 15 days. |
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Keywords: | Artemisia vulgaris botanical-nematicide Meloidogyne megadora mugwort root-knot nematode toxicity |
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