CORNUNGHIA N 14 is the natural organic nitrogen fertiliser with the highest organic N content (N 14) and gradual release, obtained through sterilisation and controlled crushing of bovine horns and nails rich in keratin. It also contains significant amounts of phosphates, potassium, magnesium and organic sulphur. The mineralisation times of organic nitrogen depend on the physical and biological characteristics of the soil (texture, aeration, humidity and temperature) and are generally between 6 and 10 months. In rice fields, these times may be longer. CORNUNGHIA N 14 is particularly suitable for basal fertilisation of all crops that benefit from a slow-release nitrogen supply, especially rice, tree crops and nursery crops, where it ensures a constant and prolonged release of nutrients.