Bipolaris oryzac was found to be the most predominant
seed borne fungi by Mishra et.al (1988) when
they studied samples collected from a different agroclimatic
region of Bihar, Jammu, Andhra Pradesh
and Orissa. Ali and Deka (1996) also reported the
prevalence of B. oryzae from Assam. Diversity and
pathogenicity of the rice brown spot pathogen has
been investigated in Bangladesh by M M Kamal and
M.A.T. Mia in 2009 using genetic fingerprint analysis.