Compost and soil mixtures suitable for humus and microelement concentrations in soils are prepared from mainly natural compounds and industrial by-products (e.g. peat containing manure, beet-potash, bauxite spoil, bound solid or half-hard acidic soil, polystyrene waste). Ingredients are homogeneously mixed and placed into stacks. These are ripened for 4-6 months and turned over at least twice. Stacks are also watered with clean water at least 4-5 times.
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