Abstract
The possibility to use release controlled fertilizers in the agriculture of the tropical countries is more important than in the
agriculture of the countries of the cold regions. In this context, the purpose of this work is the characterization of an encapsulated
commercial Fertilizer of Controlled Release named FERLENT®, which was covered with a polymeric material, obtained in situ,
under controlled conditions, which allowed to corroborate the fairly well adjustment of the synthesis parameters for a succesful
release of nutrients. It was characterized by Scanning Electron Microscopy (SEM), Thermogravimetric analysis (TGA), Nuclear
Magnetic Resonance (NMR) and infrared spectroscopy (FTIR). The agronomic benefits of fertilizer were shown during the in
vivo cultivation of tomatos using the method of transplantation from stakes. The fertilizer exhibited an ecological effect, acting as
an alternative nutrition source for tomatoes which achieved higher yields compared with traditional fertilization.