Petro is the historic line of Agriges base fertilizers made from valuable raw materials of organic and mineral origin, expertly processed and mixed to obtain a complete product, capable of: nourishing the plant in a balanced and constant manner over time, phytostimulating the plant metabolism and improve the chemical, physical and biological characteristics of the soil. The presence of Bacillus megaterium S3Nb3 solubilizes phosphorus and produces siderophores, making a greater quantity of iron available for the plant. Petro 8-5-12 W ThB is a biologically active product thanks to the exclusive RyZea production technology, which enriches it with phytostimulant molecules, ensuring radical development and absorption, acidifying and desalination of the circulating solution.