In the context of the invention, a soil-improving product with simultaneous fertilizing effect as well as a product for aggravating small animals, consisting of the pure fermentation product from biogas plants and the mixtures to be prepared therefrom with calcium carbonate or biochar presented, which are also based on the fact that in general the plants seasonal need different nutrients to promote optimal growth. These selected mixtures give the soil a special structure, cultivate the lawn and promote the protection of plants in certain applications.
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