IN VITRO EFFICACY OF SOME PLANT EXTRACTS AGAINST DAMPING OFF DISEASE OF TOMATOES
Published: 1 Jun 2014
Abstract: Plant diseases control represent a major challenge that farmers are facing in the management of cropping systems. Rhizoctonia solani is a soilborne fungal pathogen causing tomato (Solanum lycopersicum) root-rot and damping off, and generating compromised quality of crops and reducing yields. Ethanol extracts of five medicinal plants, marigold (Tagetes patula), horsetail (Equisetum arvense), elderberry (Sambucus nigra), burdock (Arctium lappa), liquorice (Glycyrrhiza glabra) were investigated to determine their antifungal potential against Rhizoctonia. Solani. In vitro testing demonstrated a high growth inhibition of the extracts. Four of the extracts totally inhibited the mycelial growth of R. solani compared to the untreated control, at 10% concentration in growth media. For all plant extracts considered, the growth inhibition increased with the concentration of each extract. The obtained results support an interesting direction of research, meaning the use of plant extracts in controlling diseases attacking economically important crops for integrated pest management programmes.
Keywords: antifungal effect, ethanol plant extracts, rhizoctonia solani, damping off tomatoes
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