Meloidogyne Incognita extract reduces Meloidogyne Incognita infestation in tomato

Ethanolic extract of Meloidogyne incognita females, when applied as foliar spray at the rate of 5.7 mg/plant in aqueous suspension on tomato plants cv. Pusa Ruby, inoculated with M. incognita larvae, reduced nematode infestation and promoted plant growth. The same extract, when applied at 1.3 mg/culture tube to root callus of tomato grown on MS media supplemented with NAA (lmg/l) and BAP (0.5 mg/l) and inoculated with M. incognita larvae, reduced nematode infestation of callus and improved callus growth. The nematode extract (NE) is thought to induce systemic resistance in tomato.