Gunjan Joshi, D.K. Jain and P.N. Singh
Department of Botany, Meerut College, Meerut (U.P.)
Abstract: Leaf extracts of eight plants (Azadirachta indica, Aegle marmelos, Bougainvillea spectabilis, Catharanthus roseus, Datura stramonium, Lantana camara, Ocimum sanctum and Parthenium hysterophorus ) were evaluated for their fungitoxic activity against Alternaria alternata and Colletotrichum capsici isolated from the leaves of Impatiens balsamina L. by using surface sterilization method. Poisoned food technique was used to study the in vitro effect of leaf extracts (10% conc.). Maximum inhibition of radial mycelial growth of Alternaria alternata and Colletotrichum capsici were observed by the leaf extract of Aegle marmelos (60.59% and 54.59% respectively). Leaf extracts of Azadirachta indica, Lantana camara and Parthenium hysterophorus also showed considerable amount of inhibition.
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