Nematicidal properties of garlic, Allium sativum L.

Nematicidal properties of garlic against Meloidogyne incognita have been studied. The aqueous extract of garlic bulbs suppressed the egg hatch from 88.64 to 98.88 per cent at 0.05 to 10 per cent concentrations, respectively. Cent per cent nematode larvae were killed at 5 per cent concentration of the extract within 168h; whereas, only 61.33 per cent larval kill was observed with the leaf extract at the same concentration and after the same interval of time. The distilled oil fraction of garlic proved highly toxic against the larvae at 8 ppm concentration. The dry clove powder at 5 per cent concentration also killed cent per cent larvae after 72 h.