Aplicação de fertilizantes com diferentes tecnologias: volatilização de NH3

Abstract

Agricultural activity becomes more sustainable when production costs decrease, which is opposite to fertilizer use efficacy, where the sector still faces nutrient losses. Several studies have shown that losses occur differently due to lack of fertilizer quality or to management employed on fertilizer distribution. Thus, mixing urea with other nitrogen fertilizers can reduce losses of NH3 by volatilization, or coating it with urease inhibiting substances, or with liberation retardants. The use of polymers for coating urea is presented as a new option for reducing N volatilization; however, since few studies have been done, little is known about its performance. Polymerized fertilizers, with urease inhibitors and organomineral ones can reduce N-NH3 volatilization in comparison to traditional N sources, such as urea. New technologies in nitrogen fertilizers can reduce N losses, which may lead to greater application efficacy, availability and absorption by plants.