Lab experiment was conducted at Department of Plant Pathology, SKN College of Agriculture, Jobner, Jaipur, Rajasthan, during 2009-10, to carried out the efficacy of systemic and non-systemic fungicide viz., mancozeb, copper oxychloride, carbendazim + mancozeb, carbendazim, thiophanate methyl was tested by poisoned food technique. Mancozeb was found most effective against Alternaria alternata followed by copper oxychloride, mancozeb + carbendazim. Thiophanate methyl was least effective against mycelial growth and sporulation. Increase in concentration of fungicides was more effective in inhibiting the mycelial growth and sporulation of the pathogen. Relative efficacy of five plant extracts viz., garlic clove, N.S.K.E (neem seed kernel extract), Ashwagandha, Bitter melon and Bael in different concentrations were studied by poisoned food technique. Garlic clove extract was found most effective in reducing mycelial growth and sporulation of the fungus followed by neem seed kernel extract. Ashwagandha floral extract was least effective against Alternaria alternata. The relative efficacy of biocontrol agent's viz., Trichoderma harzianum, T. viride and Aspergillus niger was studied in dual culture plate method T. harzianum was found most effective antagonist against A. alternata followed by T. viride and A. niger.