Product of plant origin, “Leonardite” from oxidized lignites for millions of years and completely soluble potassium salts. With the indicated doses we provide enough humic acids, fulvic acids and organic matter to the soil for the normal development of the plants that together with the potash content, make an ideal product to apply as a background nutrient or winter stop. They retain water particles and nutrients for a longer period, avoiding leaching (loss of soluble or dispersible salts caused by water). It improves the root mass of the plant, increasing the surface area of absorption and consequently improving the yield of fertilization.