Organo-mineral fertilizer with a high content of natural organic and synthesised (methylenurea) nitrogen. It allows useful nitrogen nutrition in all vegetative phases. The particular ratio between the various forms of nitrogen provides continuous nutrition for all crops. The presence of methylenurea (slow release nitrogen) and amino acids (the organic part of the product) gives this formulation unique nutritive characteristics whereby the Nitrogen is entirely and gradually available. This is especially beneficial during periods of maximum growth and in conditions of climatic stress.