DERMAZOTO N 11 is an organic nitrogen fertiliser formulated from hydrolyzed leather and hides, providing a high level of organic nitrogen (N 11%) with a slow and extended release. This component is obtained through high-pressure hydrolysis of collagenous scleroproteins. Nitrogen mineralization depends on soil characteristics (texture, structure, moisture, aeration, and temperature) and is generally completed within 2–4 months; under prolonged flooding conditions, such as in rice fields, degradation times are longer. DERMAZOTO N 11 also contains iron (Fe) and magnesium (Mg) chelated to the organic matTer, which promote the increase of microbial biomass, improve the humic substance balance, and help prevent and correct iron chlorosis and magnesium deficiencies. DERMAZOTO N 11 is ideal for basal and top-dressing applications, recommended for autumn and spring treatments on a wide range of crops. The product shows high effectiveness in rice fields, orchards, and vineyards, whether grassed or not, and is also excellent for nursery production.