A concentrate solution that has a combination of  Humic and Fulvic adids and also a source of potassium that can be applied as a source of carbon and biological supplement for improved soil quality.  Biosoil is a very fersatile product, i.e. adjuvant in foliar nutrient sprays. Organic supplement in fertiliser material. This product improves the soil condition and is also contributes to water holding capacity of soil. Biosoil is very carbon-rich substrate extracted from composed plant fibre.