Invasive Species Compendium

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Abstract

Antagonistic effect of different medicinal plant extracts on larval mortality and egg hatching of Meloidogyne graminicola.

Abstract

An experiment was conducted to test the efficacy of nine medicinal plant extracts at two concentrations viz., 2% and 4% against larval motility and egg hatching of Meloidogyne graminicola causing root-knot disease in rice under in vitro condition. The plant extracts viz., Bhang (Cannabis spp.), Guldaudi (Chrysanthemum spp.), Malabar nut (Justicia adhatoda), Ashwagandha (Withania somnifera), Kaner (Nerium oleander), Neem (Azadirachta indica), Bhringraj (Eclipta prostrate), Peach (Prunus persica) and Parthenium (Parthenium hysterophorus) tested in this study. All the tested plant extracts increased the larval mortality and reduced the egg hatching of M. graminicola. Among the tested plant extracts maximum larval mortality (11.65%) was recorded in Bhringraj (E. prostrate) and minimum (70.00%) egg hatching in Neem (A. indica) at 2% concentration after 72 hr of inoculation. While, at 4% concentration maximum larval mortality (48.35%) and minimum egg hatching (53.35%) was recorded in Neem (A. indica) leaf extract after 72 hr of inoculation.