Review and Evaluation of Literature Pretaining to Compost Characterisitcs and to the Application of Compost Alone and Mixed with Different Soils

摘要

TxDOT reports that composted manures have been used in 22 of the 25 TxDOT districts, usually with excellent results. The application of composted manures to rights-of-way successfully improved growth of vegetation and controlled erosion of slopes on highway embankments. However, consistent availability of compost of the quality and quantity required for use in roadside projects is problematic in some states. Many states have adopted specifications for compost characteristics to ensure consistent quality of compost. The objectives of this literature evaluation are identification of the constituents and composition of various types of composted materials including animal manures, municipal wastes (solid waste and wastewater sludges), and other waste materials, as well as documentation of application of the composted materials alone as well as mixed with different soils (composted manufactured topsoil).