Potential of Different Parts of Neem (Azadirachta indica) Extracts in Controlling Rhizoctonia solani Infestation

Journal Article
Bokhari, Najat A. . 2014
Publication Work Type: 
Scientific paper
Magazine \ Newspaper: 
INTERNATIONAL JOURNAL OF AGRICULTURE & BIOLOGY
Issue Number: 
16
Volume Number: 
3
Pages: 
639-643
Publication Abstract: 

Abstract
Black scurf is one of the oldest and common diseases of potato stems and stolons below the soil surface caused by Rhizoctonia
solani. The present study was carried out to investigate the antifungal potential of Azadirachta indica L. against this soil-borne
fungal pathogen. Different concentrations (1, 2, 3, 4, 5%) of aqueous, methanol, n-hexane and chloroform extracts of leaves,
stems and fruits of A. indica were prepared and were evaluated for their in vitro antifungal activity. Data showed that all the
extracts showed variable antifungal activity. In general, leaf and fruit extracts exhibited the highest inhibitory effect against
growth of the fungal pathogen followed by stem-bark. Among the various extracts, leaf methanol extract, fruit and stem-bark
chloroform extract showed the best antifungal activity resulting in 0–83% and 0-79% reduction in fungal biomass over
corresponding control treatments, respectively. The implications of using the neem extracts in controlling R. solani are
discussed. © 2014 Friends Science Publishers

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