Herbert Koepf was a pioneer of biodynamics in Germany, the USA and in the UK.He was an expert teacher, and drew on his own practical background in farming. This book is a collection of some of Koepf's writings on key aspects of biodynamics.It includes practical guidance on building soil structure, preparing and applying biodynamic sprays, crop rotation, compost and composting methods.He also considers ways of researching the effectiveness of biodynamic methods, and measuring results. This is an invaluable guide for anyone working with biodynamic methods, offering Koepf's unique insights and wisdom on practical issues. This overview of Koepf's work is a newly-edited combination of four pamphlets: Compost, Biodynamic Sprays, Three Lectures on Biodynamics, and Research in Biodynamic Agriculture. Published in association with the Biodynamic Association.