In vitro evaluation of neem-based nematicides against Meloidogyne incognita

A. S. Khanna, S. Kumar


An experiment was conducted to test the effects of five neem-based pesticides on the mortality of juveniles and egg hatch of the root-knot nematode Meloidogyne incognita. Among the five formulations tested, Econeem and Neem seed kernel extract (NSKE) gave the greatest nematode juvenile mortality (73.3-77.2%) after 96 hours and the least juvenile emergence per egg mass (69.8-73.7 compared to 315 in the control) after 144 hours, in 1% solution. Nimbecidine, Neem Azal and Neem Gold were also effective but significantly less than the two previously mentioned formulations. The nematicidal activity increased with the increase of the concentration of the formulation and the exposure time of the nematode.

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