Slow-Release Fertilizer (SRF) is an improved variety of fertilizer which is developed through appropriate product design. It is unique by its chemical & physical properties, environmental safety & its stability against mechanical stress, hygrometry & temperature. It can be applied less frequently, making them more cost-effective and save time & labor. Hence, the necessity for SRFs with the release of nutrients over extended period of time is increasing continuously with population growth, particularly in developing countries. This book aims therefore to help policy makers & planners in this field by providing a complete account of all aspects of SRF & holding a pre-design of SRF manufacturing plant.