Cauliflower (Brassica oleracea L.) were cultivated as a vegetable for their inflorescence meristem. In Indian history, it was assumed that this vegetable was cultivated in India from last 170 years. British people bring this crop to India in 1822(Gopalkrishnan, T.R., 2007). It is the biennial plant. Maharashtra stands eighth among the cauliflower growing states in India. Alternaria brassicicola causes head rot disease to cauliflower in Preharvest as well as post-harvest condition. This disease is an important fungal disease. Proper management after harvest and during transportation can reduce its chances of spreading. Alternaria brassicicola were collected from 10 different places of Maharashtra. Spores of fungi were collected and cultured on PDA and later used for pathogenicity under test condition of the moist chamber. Nutritive analysis of infected head and fresh (Healthy ) head were done, and their comparisons show that Total Carbohydrate, Reducing sugars, vitamin-C and fibre content were drastically reduce whereas the free amino acid content and protein content of the diseased head was increased.
