NEMATICIDAL POTENTIAL OF SEED EXTRACTS: IN VITRO EFFECTS ON JUVENILE MORTALITY AND EGG HATCH OF MELOIDOGYNE INCOGNITA AND M. JAVANICA

Abstract

Seed extracts of Acacia eburnean, Azadirachta indica, Cassia sp., Parkinsonia aculeate, Sesbania sesban and Poinciana regia had the highest nematicidal potential against Meloidogyne incognita juveniles while maximum potential against M. javanica was shown y A. eburnean, Cassia sp., Melia azedarach, S. sesban and Tribulus terrestris, as indicated by strong activity in all concentrations. Similarly, Calotropis procera and S. sesban were the best in preventing egg batch of M. incognita, and C. procera, S. sesban and Chenopodium album were the most effective against hatch of M. javanica eggs. S. sesban was outstanding in killing juveniles and preventing latching of both the species.