Effect of Neem and Bacillus thuringiensis on Egg Hatching of Meloidogyne incognita

An attempt was made to study the in vitro effect of standard concentration of aqueous neem leaf extract, neem seed extract, 2.5% carbofuradan 3-G, cell pelleted residues of Bacillus thuringiensis on egg hatching of Meloidogyne incognita. In vitro effect of cell pelleted residues (1.1X 10⁹ CFU/ml) + standard concentration of aqueous neem leaf extract, cell pelleted residues + neem seed extract and cell pelleted residues on egg hatching after 1 h, 6 h, 12 h exposure were the most effective treatments and caused no egg hatching as compared to the water control. 12 h treated eggs with cell pelleted residues + neem leaf extract, cell pelleted residues + neem seed extract and cell pelleted residues showed no egg hatching in distilled water after 24 h incubation as compared to the water control and were at par with carbofuradan 3-G. After 72 h exposure egg hatching inhibition with cell pelleted residues + neem leaf extract, neem seed extract, cell pelleted residues, carbofuradan 3-G and cell pelleted residues + neem seed extract was at par and were equally effective.