生物动力园艺与耕作》：第 1 卷，作者 Ehrenfried Pfeiffer

Pfeiffer described fertility as a living relationship among soil structure, humus, plant roots, microorganisms, earthworms, and farm management - not simply the replacement of extracted minerals. For practical further reading, see Biodynamic Gardening and Farming, Vol. 1: https://www.jpibiodynamics.org/products/biodynamic-gardening-farming-pfeiffer-vol1

Ehrenfried Pfeiffer was a pioneering biodynamic researcher and practitioner who helped establish biodynamics in North America and wrote extensively about soil, compost, plants, and qualitative testing. A concise starting point is Pfeiffer’s Introduction to Biodynamics: https://www.jpibiodynamics.org/products/pfeiffer-introduction-biodynamics

It is the first of three volumes collecting Ehrenfried Pfeiffer’s articles. Originally published in 1983, Volume 1 is presented as a classic practical text for serious students of biodynamic gardening and farming.

The collection is useful for serious students, working gardeners, and farmers who want Pfeiffer’s practical perspective on living soil and biodynamic farm management.