Fungicidal activity of plants extracts from Uttaranchal hills against soybean fungal pathogens

The screening of methanolic extracts of 41 plant spp. for their fungicidal activity against 3 soybean fungal pathogens (Colletotrichum truncatum, Fusarium oxysporum and Macrophomina phaseolina, which cause the pod blight, wilt/root rot and charcoal rot diseases of soybean respectively), showed that the aqueous/methanol extracts of 12 plants were not inhibitory to test fungal pathogens. The 17 plant extracts (aqueous) were effective against one or more pathogens. Dry hot water extract of B. aristata, B. albiflora and L. camara were highly potent against C. truncatum, fresh hot water extract of P. lapathifolium was most potent against F. oxysporum and dry hot water extract of C viscosa and M. longifolia were significantly potent against M. phaseolina. Dry methanol extract of B. aristata, C. bonariensis, C. viscosa, L. camara and V. negundo significantly inhibited all test fungal pathogens. B. albiflora, P. glabrum, O. vulgare, and R. arboretum cause significant inhibition in the growth of C. truncatum. Further, A. marmelos, B. aristata, B. albiflora, C. bonariensis, C. sativa, C. viscosa, E. karvinskianus, H. spicatum, L kumaonesis, J adhatoda, L. camara, L. nepetaelifolia, L. ovalifolia, M. longifolia, P. hydropiper, P. lapathifolium, P. polystachyum, P. serrulatum, S. insigne, V. jatamansi, V. negundo and W. fruticosa proved significantly potent against F. oxysporum. While, A. marmelos, B. aristata, C. bonariensis, C. sativa, C. viscosa, H. spicatum, L. camara, L. nepetaelifolia, M longifolia, V. jatamansi, V. negundo and W. fruticosa showed good fungicidal activity against M phaseolina. The effective plant spp. may further. be screened as promising species for fungicidal action.