title: Effect of Artemisia vulgaris Rhizome Extracts on Hatching, Mortality, and Plant Infectivity of Meloidogyne megadora.
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 degrees C for 15 days.
authors.forename: S Dos S
authors.initials: Sdos S
authors.lastname: da R Costa
authors.forename: M S N
authors.initials: MS
authors.lastname: de A Santos
authors.forename: M F
authors.initials: MF
authors.lastname: Ryan