In Vitro Efficacy of Some Medicinal Plant-Extracts Against Curvularia lunata Causing Blight Disease of Solanum nigrum L.

Fungi are both harmful and beneficial to plants they are the causative agents of many plant diseases through the use of diverse strategies. Sometimes they kill their host plants thus there is a need to control the fungi for proper growth and development of plants. Curvularia lunata (Wakker) Boedijn is a causative pathogen of many medicinal plant diseases, especially leaf spot and blight disease of Solanum nigrum L. The present study was conducted to determine the inhibitory effects of six selected medicinal plant extracts viz. Ocimum sanctum L., Solanum melongena L., Bergera koenigii L., Calotropis gigantean (L.) W.T.Aiton, Justicia adhatoda L., Andrographis paniculata (Burm.f.) Wall. ex Nees against mycelial growth of Curvularia lunata. Both ethanolic extract and aqueous extract show significant inhibition of tested pathogenic fungi as compared to control.