review on qualitative guidelines and standards of Compost

Compost is a gradual process in nature by which organic materials are decomposed in the presence of air by microorganisms and fungi. The product is a valuable fertilizer that is used in different places even in home little gardens, so that it has signed as an unnoticed asset. With due attention to the importance of compost, its guidelines and standards should be evaluated. It is pointed and compared, in this assay to standards and permitted limit of element concentrations in compost.Permitted extent and different standards are presented in different tables. It is important to consider the standards for quality control of the final product in compost production process. Meantime, the product adverse effects on environment, food cycle and so on are prevented.