Antagonistic potential of fungal microflora from spent mushroom substrate against soil borne pathogens of ginger
Publication Date : 02/01/2016
A study was taken up to evaluate the antagonistic potential of fungal microflora from paddy straw SMS of Pleurotus sajor-caju against major soil borne pathogens of ginger under in vitro condition. Fungal microflora were isolated from SMS collected from 6 different locations of Kerala, at three different periods of the year viz., March-April, June-July and November-December. A total of 47 fungal isolates were evaluated in vitro for their inhibitory effect against Pythium aphanidermatum, Fusarium oxysporum, Rhizoctonia solani, Sclerotium rolfsii and Ralstonia solanacearum by dual culture technique. Out of 47 isolates, 10 were most effective against all the above fungal pathogens and 15 were most effective against the bacterial pathogen, R. solanacearum, showed antagonistic property ranged from 60-100%. Among the isolates Trichoderma spp. were the most effective in inhibiting all the tested pathogens. The isolate P1F1 (T. koningii) showed cent per cent inhibition against P. aphanidermatum, F. oxysporum and R. solani, and 90 per cent inhibition against S. rolfsii. The study concluded that SMS is rich in fungal microflora with antagonistic potential and it can be effectively used for the management of soil borne diseases of ginger.
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