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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
02/06/2017 |
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Data da última atualização: |
02/06/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, A. P. P.; ALVES, B. J. R.; ANJO, L. H. C. dos; LIMA, E.; ZONTA, E.; PEREIRA, W.; SOARES, P. F. C. |
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Afiliação: |
ANA PAULA PESSIM OLIVEIRA, UFRRJ; BRUNO JOSE RODRIGUES ALVES, CNPAB; LÚCIA HELENA CUNHA DOS ANJOS, UFRRJ; EDUARDO LIMA, UFRRJ; EVERALDO ZONTA, UFRRJ; WILLIAN PEREIRA, UFRRJ; PAULA FERNANDA CHAVES SOARES, UFRRJ. |
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Título: |
Agronomic performance of green cane fertilized with ammonium sulfate in a coastal tableland soil. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Bragantia, v. 76, n. 2, Apr./Jun. 2017 Epub May 15, 2017. |
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ISSN: |
1678-4499 |
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DOI: |
http://dx.doi.org/10.1590/1678-4499.186 |
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Idioma: |
Inglês |
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Conteúdo: |
The recent approach of eliminating the usage of fire for sugarcane harvesting resulted in managing the crop on a trashblanketed soil, to which a proper recommendation of N fertilization is lacking, a problem that remains in the coastal tablelands of the Espírito Santo State, Brazil. This study aimed at evaluating the effect of increasing N rates on stalk and sugar yields and the N use efficiency by the crop. The experimental area planted with sugarcane, at the first ratoon, is located in Linhares, Espírito Santo State. The treatments consisted of N rates varying from 80 to 160 kg N∙ha−1 as ammonium sulphate, and a control without N, in a completely randomized blocks experimental design. Stalk yield increased with the N rate, and fitting the results to a quadratic function suggests no response to fertilizer rates above 130 kg N∙ha−1. The highest margin of agricultural contribution was obtained at the rate of 100 kg N∙ha−1. The N use efficiency decreased from almost 49 to 38%, when the N rate increased from 100 to 160 kg N∙ha−1. There was no effect of increasing N rates on the sugar concentration, although the sugar yield response was positive and strongly influenced by the stalk production. Results showed the importance of reassessing the adequate N rate for maximizing yield in green cane production systems. |
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Palavras-Chave: |
Nitrogen requirements; Saccharum spp; Sugarcane harvesting systems. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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