he inhibitory effect of the actinomycetes towards
G. boninenseis measured by calculating the percentage inhibitory
of radial growth (PIRG) as follows:
PIRGð%Þ¼ðR1R2Þ=R1100%
where R1: radial growth ofG. boninensein control plate and R2:
radial growth ofG. boninenseco-inoculated with actinomycetes.