Author(s):

Josiya Joy, RR Rathod and AP Suryawanshi

Abstract: Phytoextracts and essential oils were evaluated in vitro for their efficacy against sporangial germination of Albugo candida. Among seven phytoextracts evaluated in vitro, Azadirachta indica showed significantly highest sporangial germination inhibition of 53.94% and 57.13%, respectively at 10 and 20 per cent, followed by Eucalyptus globulus (50.11% and 56.13%, respectively) and Ocimum sanctum (53.23% and 46.26%, respectively). Rest of the phytoextracts tested also showed antifungal activity against the test pathogen. Among the essential oils evaluated in vitro, garlic oil resulted with significantly highest sporangial germination inhibition 51.46% and 54.15%, respectively at 500 ppm and 1000 ppm, followed by oils of Neem (51.46% and 54.15%, respectively), Eucalyptus (46.98% and 50.44%, respectively). Rest of the essential oils also significantly inhibited sporangial germination over untreated control.

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