The application of SP in non-inoculated soil (treatment 4)
significantly (P < 0.05) enhanced the growth and development
of bean plants compared to PRP in non-inoculated soil
(treatment 5) (Table 4). In general, the application of SP was
found to be superior to the application of PRP when applied
individually (treatment 4) or in combination with M. endolithica
(treatment 6).