Mar 1, 2019 · The nutritional content of the fermented fertilizers was evaluated, and in maize plants growth variables were measured, along with N–P–K contents in the aerial and root biomass. The types of biol show different characteristics for organic matter, N, N–NH4, N–NO3, P, K, Ca, Mg, Fe, Cu, Zn, Mn and B, as well as physical characteristics.