Effect of various AM fungal species (Acaulospora bireticulata, A.lacunosa, A.laevis, Glomus aggregatum, G.fasciculatum, G.geosporum and G.mosseae) on the growth performance of commonly grown medicinal weeds such as Achyranthes aspera, Eclipta alba, Euphorbia hirta and Leucas aspera was studied. Percent germination of seeds was significantly enhanced in presence of AM fungi. Rhizosphere samples collected at the time of seed collection in their natural habitats and after 90 days of AMF inoculation revealed the abundance of spores of Glomus species. Among the AM fungi used in the present study, G.fasciculatum showed maximum colonization with 100% in all the selected plants. The correlation between the percent colonization and the biomass was not observed in the present study. The root and shoot length along with biomass in all the selected plants varied with the AMF species indicating the specific host compatibility. AMF inoculated plants in general, showed better growth performance than control plants
