In the present study efforts were made to explore the efficacy of various plant extracts and oil cakes against Macrophomina phaseolina. The efficacy of eight different plant species, Zingiber officianale, Aloe indica, Lawsonia inermis, Chenopodium album, Allium cepa, Piper betel, Murraya koenigii, Parthenium hysterophorus aqueous extracts including oil cakes of mustard and neem were evaluated by using of poisoned food technique in vitro for their inhibitory effect on mycelial growth of M. phaseolina causing stem rot of jute (Corchorus olitorius and C. capsularis). The rhizome extract of Z. officinale produced maximum growth inhibition (74.59%) of the pathogen followed by leaf extracts of A. indica (63.57%), and leaf extract of L. inermis (60.17%) at the concentration of 10%. The maximum mycelial growth inhibition (52.40%) was recorded with neem cake (Azadirachta indica) at the concentrations of 20% followed by 42.61% and 29.60% with concentration of 15% and 10%, respectively. However, maximum mycelial growth inhibition (19.42%) was recorded with mustard cake (Brassica juncea) at the concentration of 20% followed by 16.64% and 12.20% at the concentration of 15% and 10% respectively. In general mycelial growth inhibition was dose dependent and it was maximum in case of neem cake than mustard cake. The present study revealed that, these plant extracts and oilcake extracts could be exploited for the possible control of deadly pathogen M. phaseolina. Accordingly, this is an important proactive measure in preventing the spread of the stem rot disease through a more ecofriendly approach.
Jute, Macrophomina phaseolina, Oilcake extracts, Phytoextracts
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