Antifungal Effect of Neemazal A commercial product of Neem (Azadirachta Indica)

Azadiractine was found to effective against insect and diseases on human as well as plant species and it was tested against spore germination of ten fungi of different genera. Efficacy of azadiractine was also tested against conidial germination and other growth parameters of Erysiphe pisi on excised pea leaves. The Neemazal inhibited spore germination at all concentration. Maximum inhibitation was observed at 2000 ppm, more than 90 per cent inhibitation of spore germination was observed in Fusarium udam, Ustilago cynodontis, Alternaria brassicicola and Aspergillus flavus. Neemazal also affects conidial germination and colony development of E. pisi. Pre-inoculation treatment was later than post-inoculation treatment as significant inhibition was observed in germ tubes length development at all the concentrations after 24 hour of inoculation.