Microbial proliferation activity of biodynamic preparations and biodynamic compost

Biodynamic agriculture, different from other agroecological practices, comprises the use of humified preparations to stimulate humus formation in soil and increase plant growth and quality. The biodynamic preparations (BP), undergone a natural biotechnological transformation, were characterized by their C and N elemental content and carbon molecular distribution, and evaluated in vitro, for the first time, for their capability to proliferate some selected microbial strains active in the composti