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	Provedor de dados Rev. Bras. Ciênc. Solo (4) Autor Bayer,Cimélio (4) Viero,Fernando (4) Carniel,Eduardo (2) Fontoura,Sandra Mara Vieira (2) Moraes,Renato Paulo de (2) Menegati,Guilherme Batista (1) Silva,Paulo Regis Ferreira da (1) Vieira,Renan Costa Beber (1) Mais... Palavra-chave Efficiency (1) Hordeum vulgare L. (1) N fertilization (1) N indication (1) N losses (1) NBPT (1) Nitrogen (1) Nitrogen fertilization (1) Nitrogen sources (1) Triticum aestivum (1) Urea (1) Yield (1) Zea mays (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2017 (2) 2015 (1) 2014 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Nitrogen Fertilization of No-Tillage Winter Cereals in the South-Central Region of Paraná, Brazil Rev. Bras. Ciênc. Solo Fontoura,Sandra Mara Vieira; Viero,Fernando; Moraes,Renato Paulo de; Bayer,Cimélio. ABSTRACT High winter cereal yields depend on an adequate supply of nitrogen (N). We developed a system for indicating N rates for wheat and barley in the South-Central region of the state of Paraná, Brazil, using results of 72 field experiments conducted from 2007 to 2012. The N rates recommended for winter cereals were estimated to supply the amounts of N fertilizer needed to obtain increasing yields (<3.5, 3.5-4.5, 4.5-5.5, and >5.5 Mg ha-1) of crops grown after soybean and corn on soils with a variable organic matter content (<40, 40-60, and >60 g dm-3). The apparent mineralization rate of soil N was estimated to be 1 % and the N fertilization efficiency 50 %. The N rates recommended for wheat ranged from 30 to 150 kg ha-1 when cultivated... Tipo: Info:eu-repo/semantics/article Palavras-chave: Triticum aestivum; Hordeum vulgare L.; N indication; Urea. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100533 Ammonia volatilization from nitrogen fertilizers in no-till wheat and maize in southern Brazil Rev. Bras. Ciênc. Solo Viero,Fernando; Bayer,Cimélio; Fontoura,Sandra Mara Vieira; Moraes,Renato Paulo de. Crop residues on the soil surface of no-till systems can intensify ammonia volatilization from N fertilizers applied to cereal crops. This study assessed the magnitude of N losses through ammonia volatilization from urea applied to no-till winter (wheat) and summer crops (maize) on a Typic Hapludox in the south-central region of Paraná, southern Brazil. In addition, the potential of alternative N sources (urea with urease inhibitor, liquid fertilizer, ammonium nitrate and ammonium sulfate) and different urea managements (fertilizer applied in the morning or afternoon) were evaluated. Two experiments with maize and wheat were carried out for two years, arranged in a randomized block design with four replications. Nitrogen volatilization losses were assessed... Tipo: Info:eu-repo/semantics/article Palavras-chave: Nitrogen fertilization; Efficiency; Yield. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500017 Urease Inhibitor and Irrigation Management to Mitigate Ammonia Volatilization from Urea in No-Till Corn Rev. Bras. Ciênc. Solo Viero,Fernando; Menegati,Guilherme Batista; Carniel,Eduardo; Silva,Paulo Regis Ferreira da; Bayer,Cimélio. ABSTRACT High nitrogen (N) losses by ammonia (NH3) volatilization from urea can compromise nitrogen fertilization efficiency and corn yield. The purpose of this study was to assess the effects of irrigation management and the addition of the urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) on NH3-N losses from urea and on corn yield. To this end, two experiments were carried out in the 2011/12 crop season on a sandy clay loam Acrisol in the Central Basin region of Rio Grande do Sul, southern Brazil. Experiment I consisted of two different N sources (urea and urea plus the inhibitor) at a rate of 200 kg ha-1 N and two corn sowing times [viz., an early time (Sept. 3, 2011) and an intermediate time (Oct. 3, 2011)]. Experiment II considered a... Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Nitrogen; NBPT. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100532 MANAGEMENT OF IRRIGATION AND NITROGEN FERTILIZERS TO REDUCE AMMONIA VOLATILIZATION Rev. Bras. Ciênc. Solo Viero,Fernando; Bayer,Cimélio; Vieira,Renan Costa Beber; Carniel,Eduardo. ABSTRACT Nitrogen losses by ammonia (NH3) volatilization can be reduced by appropriate irrigation management or by alternative N sources, replacing urea. The objective of this study was to evaluate the efficiency of irrigation management and N source combinations in decreasing NH3 volatilization from an Argissolo Vermelho Distrófico típico cultivated for 28 years with black oat (Avena strigosa) and maize (Zea mays), under no-tillage in the region of Depressão Central, Rio Grande do Sul, Brazil. The experiment was arranged in a randomized block design with split plots with three replications, where the main plots consisted of irrigation systems: no irrigation; irrigation immediately before and irrigation immediately after fertilization. The subplots were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Nitrogen sources; N fertilization; N losses. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000601737 Registros recuperados: 4 Primeira ... 1 ... Última

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