This document discusses the principles and key characteristics of organic farming. Organic farming avoids synthetic inputs and relies on techniques like crop rotation, animal manures, and nutrient cycling. The four main principles of organic farming are health, ecology, fairness, and care. Organic farming aims to sustain soil, plant, animal and human health while working with ecological systems. It emphasizes building fair relationships and managing farms responsibly to protect current and future generations. Key techniques include maintaining soil organic matter, using insoluble nutrient sources, biological nitrogen fixation, and limited pest and disease control.