Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/58770
Título: Corn cropping system and nitrogen fertilizers technologies affect ammonia volatilization in brazilian tropical soils
Palavras-chave: No-till
Urea technologies
Nitrogen use efficiency
Urease inhibitors
Data do documento: 2023
Editor: Multidisciplinary Digital Publishing Institute
Citação: SANTOS, C. et al. Corn cropping system and nitrogen fertilizers technologies affect ammonia volatilization in brazilian tropical soils. Soil Systems, [S.l.], v. 7, n. 2, 2023.
Resumo: The adoption of technologies for N fertilization has become essential for increasing the N use efficiency in no-till (NT) systems in Brazil. Thus, this study aimed to quantify ammonia losses, N removal in grains, and second crop season yield in no-till and conventional (T) areas that received the application of different N fertilizers and their technologies. Ammonia volatilization, N extraction in grains, and corn yield in response to the application of conventional fertilizers were compared to urea treated with urease inhibitors in NT and conventional systems. The treatments were: no-N (Control); Prilled urea (PU); urea + N-(n-Butyl) thiophosphoric triamide (UNBPT); urea + Cu + B (UCuB); ammonium nitrate (AN), and ammonium sulfate (AS). In the NT system, the N-NH3 losses were 49% higher than in the conventional; without differences in corn yield. The fertilizers AN and AS had the lowest N-NH3 losses, regardless of the tillage system. UNBPT reduced the mean N-NH3 loss by 33% compared to PU. UNBPT (1200 mg kg−1) and UNBPT (180 mg kg−1) reduced the N-NH3 losses by 72% and 22%, respectively, compared to PU in the NT system. We noticed that the NBPT concentration to be used in soils under NT should be adjusted, and a reduction of N-NH3 losses does not directly reflect an increase in yield and N extraction by corn.
URI: https://www.mdpi.com/2571-8789/7/2/54
http://repositorio.ufla.br/jspui/handle/1/58770
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