Composting is a way of obtaining a stable product from biological oxidative transformations, in environmental sound, similar to that naturally occurs in the soil. Although composting has been practiced for thousands of years, the research studies have been, until the 20th century, progressed to spur increased interest in composting and compost use as well as gave a way to interest the development by the broad of scientists of various disciplines such as agronomy, mechanical engineering, horticulture, mushroom science, soil science, microbiology and ecology. The strategy of inoculants to improve the composting process has been a controversial subject since scientists started to devote attention to this question. Some works describe the complete absence of effects of this kind of treatment, whereas others report the way that inoculation leads to the production of compost with better properties, to achieve specific goals and/or to overcome the obstacles of production. Based on the forgoing, the present study has been aiming the evaluation of various scenarios of the rice straw composting process under controlling of multifarious bio-inoculate sources and/or some natural resources.