Biodynamic agriculture is a method of organic farming that treats farms as unified and individual organisms,[1] emphasizing balancing the holistic development and interrelationship of the soil, plants, animals as a self-nourishing system without external inputs[2] insofar as this is possible given the loss of nutrients due to the export of food.[3]
Regarded by some as the first modern ecological farming system[4] and one of the most sustainable,[5]biodynamic farming has much in common with other organic approaches, such as emphasizing the use of manures and composts and excluding of the use of artificial chemicals on soil and plants. Methods unique to the biodynamic approach include the use of fermented herbal and mineral preparations as compost additives and field sprays and the use of an astronomical sowing and planting calendar.[6]Biodynamics originated out of the work of Rudolf Steiner, the founder of the spiritual philosophy anthroposophy.