Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/56819
Título: Nitrogen fertilizer technologies: opportunities to improve nutrient use efficiency towards sustainable coffee production systems
Palavras-chave: Coffea arabica L.
Ammonia gas
Enhanced-efficiency N fertilizers
Urease inhibitors
Data do documento: Abr-2023
Editor: Elsevier
Citação: SOUZA, T. L. de et al. Nitrogen fertilizer technologies: opportunities to improve nutrient use efficiency towards sustainable coffee production systems. Agriculture, Ecosystems & Environment, [S.l.], v. 345, Apr. 2023.
Resumo: Adequate fertilizer management is fundamental for efficient use of N and the sustainability of coffee crop environment. Thus, an experiment was conducted for four consecutive years with Coffea arabica L., seeking to assess strategies for nitrogen fertilization considering losses of N-NH3 and agronomic aspects of the coffee plant. The following fertilization technologies were used: ammonium nitrate - AN, conventional urea, and urea with N-(n-butyl) thiophosphoric triamide - NBPT (UNBPT source), applied in five doses (from 0.0 to 525 kg N ha-1 crop season-1). Quantification was made for NH3 losses, N content in the leaves and that exported in the fruit, and yield. The losses of NH3 at the dose of 150 kg N ha-1 were urea (13.7 %) > UNBPT (6.2 %) > AN (0.6 %); and at the dose of 400 kg N ha-1, urea (13.6 %) > UNBPT (9.5 %) > AN (0.3 %). N-NH3 losses from urea ranged from 5.3 % to 24.2 % of the N applied. The NBPT delayed 3.8 days (at the dose of 150) and 2 days (at the dose of 400) to maximum emission of N-NH3 in relation to urea. The AN and the UNBPT reduced volatilization in relation to urea by 96 % and 43 %, respectively. We present a pioneering study of long-time field trial with the main nitrogen fertilizers used on coffee crops, which carries scientific advances important for coffee growing.
URI: https://www.sciencedirect.com/science/article/pii/S0167880922004662
http://repositorio.ufla.br/jspui/handle/1/56819
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