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Makale Özeti:
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Different strains of Sclerotinia sclerotiorum were isolated from the diseased samples
collected from different hosts and locations. Among the 14 isolates, 12 isolates colonies covered the
entire Petri plates within 96 hours but, two isolates from fababean and yellow mustard showed
slow colony growth within 96 hours. All isolates produced sclerotia which were varied in number,
but the fenugreek isolate produced maximum (43) number of sclerotia and lambs quarter isolate
produced minimum number of sclerotia (12) on PDA medium. To examine inhibitory effect of
fungicide on the mycelial growth of the pathogen, 9 fungicides were tested in vitro against
Sclerotinia sclerotiorum, of those carbendazim, carboxin, topsin-M and carbendazim+ mancozeb
(SAAF) were found most effective and inhibited the mycelial growth of pathogen up to 100 per cent
at 0.05%, 0.1%, and 0.2% concentration. The effect of different bioagents viz., Trichoderma
harzianum, T. viride, T. koningii, T. atroviride, T. longibraciatum, Aspergillus niger,
Chaetomium globosome and Penicillium notatum in inhibiting the growth of Sclerotinia
sclerotiorum was studied through ―Dual Culture Technique‖. The data showed that among the
eight biocontrol agent six were fond effective. The maximum inhibition was found by T. harzianum
causing 70.82% inhibition of mycelial growth of the pathogen S. sclerotiorum.
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