Abstract The illness has been devastating to all cumin fields. The studies' goals were to determine the pathogen's intensity, cultural, morphological, pathogenic, and molecular variability; to assess losses; to determine the impact of various environmental factors on the progression of the disease; and to develop a sustainable management strategy utilising fungicides and host plant resistance. Disease samples taken from the primary cumin growing regions of Gujarat in 2016–17 and 2018–19 showed striking symptomatic differences. There were noticeable cultural and physical differences amongst ten isolates of Alternaria burnsii collected from several cumin-growing locations. The sporulation efficiency of just four of the ten isolates investigated (isolates A2, A4, A5, and A9) ranged from 80.15 to 72.30 to 78.90 to 67.25 mm.