Evaluation of vEvaluation of Various Seed Extracts for Their Nematicidal Efficacies Against Root Nematode, Meloidogyne Incognitaarious Seed Extracts for Their Nematicidal Efficacies Against Root Nematode, Meloidogyne Incognita

Abstract Nematicidal activity of seed extracts of eight medicinally important plants viz. Abrus precatorius Linn., Amaranthus virdis Linn., Bunium persicum Boiss., Dioscorea deltoidea Wall. Ex Griseb., Teraxacum officinale Weber., Malva neglecta Wall., Podophylum hexandrum Royle and Robina pseudoacacia Linn. against Meloidogyne incognita was evaluated in vitro at (24, 48 and 72 h) and greenhouse method. After 48 h of exposure, the in vitro results of second stage juveniles (J2s) displayed almost all extracts possess positive effects on J2 mortality. However, dominant mortality was observed by T. officinale 93.67% and B. persicum 89.66% at 72 h exposure. In case of greenhouse effect extracts of T. officinale and B. persicum reduced infestation as compared to inoculated control. The root knot index varied between 1-3 and egg mass index 0-3 as compared to control. This study suggested that seed extracts of these plants can be used for the management of M. incognita and could be used in replacement of synthetic nematicides.