Manejo da adubação nitrogenada com misturas de ureia revestida com NBPT e ureia revestida com enxofre e polímeros em sistemas de produção de milho

Abstract

Manejo da adubação nitrogenada com misturas de ureia revestida com NBPT e ureia revestida com enxofre e polímeros em sistemas de produção de milho versão revisada de acordo com a resolução CoPGr 6018 de 2011

Nitrogen (15N) use efficiency for fertilization managements of maize and common bean using mixtures of polymer-sulfur coated urea and conventional urea

“…the N broadcast application using 30% PSCU + 70% U, once the 15 N-fertilizer recovery at physiological maturity (73.8%) was similar among N treatments with a good rainfall distribution during maize cycle. It would not be possible to make a precise recommendation evaluating only the N uptake, which does not differentiate the N from the soil and the fertilizer, as observed in other studies in non-responsive sites (MOSCHINI, 2019;GARCIA et al, 2018;VILLALBA, 2014). The soil was the main N supplier providing 191 kg ha -1 of the total N uptake in maize at R6 (324 kg N ha -1 ) and the N fertilizer contributed with 133 kg N ha -1 .…”