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	Provedor de dados BABT (1) Autor Grannemann,Ivan (1) Mannigel,Anny Rosi (1) Marchetti,Marlene Estevão (1) Muniz,Antonio Saraiva (1) Nolla,Antonio (1) Porto,Simone Maria Altoé (1) Silva,Maria Anita Gonçalves da (1) Mais... Palavra-chave Crop rotation (1) Leaf chlorophyll (1) Nitrogen fertilized (1) No till (1) Triticum aestivum (1) Zea mays (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Ano 2011 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Monitoring and evaluation of need for nitrogen fertilizer topdressing for maize leaf chlorophyll readings and the relationship with grain yield BABT Silva,Maria Anita Gonçalves da; Muniz,Antonio Saraiva; Mannigel,Anny Rosi; Porto,Simone Maria Altoé; Marchetti,Marlene Estevão; Nolla,Antonio; Grannemann,Ivan. The study was carried out for two years in maize in succession to the wheat using no tillage system in a distroferric Red Latosol (Hapludox). Methods of management nitrogen fertilizer (120 kg ha-1) with ammonium sulphate were studied; the fertilizer was applied in maize sowing or in maize topdressing, and N with previous application in wheat sowing. In addition, leaf chlorophyll reading was used as an indicator for the need for topdressed nitrogen fertilizer. Nitrogen supply index (NSI) was shown to be effective at predicting need for topdressed nitrogen fertilizer for maize. The application of N improved the yield of the maize independent of the management system. The flowering stage was carried out at the appropriate time in order to estimate the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Nitrogen fertilized; Leaf chlorophyll; Crop rotation; No till; Zea mays; Triticum aestivum. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400004 Registros recuperados: 1 Primeira ... 1 ... Última

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