Fusarium oxysporum an ascomycete fungus which comprises all the species, varieties. It is major wilt pathogen of many economically important crop plants. This fungal pathogen affects a wide variety of hosts plants of any age. It generally produces symptoms such as wilting, chlorosis, necrosis, premature leaf drop etc. The known culture of Fusarium were collected from ICAR Goa & Agharkar research institute, Pune. Spores of this culture seen under foldscope.