Effect of some weed and shrub extracts on penetration and gall formation by Meloidogyne javanica on brinjal

摘要

Various workers (Patel and Desai, 1964; Johnson et al., 1967; Singh and Sitaramaiah, 1967; Hameed, 1970 and Prem and Nair, 1976) have tested different plant parts/extracts against root-knot nematode with success. The objective of the present study was to evaluate the nematicidal efficacy of some commonly occurring weeds and shrubs in our agricultural lands together with their persistence and field application potential against rootknot nematode, Meloidogyne javanica (Treub) Chitw., on brinjal, Solanum melongena L. The four weeds and shrubs, namely, Calotropis procera (Ait.) R.Br., Ricinus communis L., Xanthium strumarium L. and Datura stramonium L., used in this study, were previously, found to be very promising in preliminary screening tests (Nandal and Bhatti, 1983).