| Registro completo |
| Provedor de dados: |
Bragantia
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| País: |
Brazil
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| Título: |
Agronomic performance of green cane fertilized with ammonium sulfate in a coastal tableland soil
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| Autores: |
Oliveira,Ana Paula Pessim
Alves,Bruno José Rodrigues
Anjos,Lúcia Helena Cunha dos
Lima,Eduardo
Zonta,Everaldo
Pereira,Willian
Soares,Paula Fernanda Chaves
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| Data: |
2017-04-01
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| Ano: |
2017
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| Palavras-chave: |
Saccharum spp.
Sugarcane harvesting systems
Nitrogen requirements
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| Resumo: |
ABSTRACT 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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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200246
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| Editor: |
Instituto Agronômico de Campinas
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| Relação: |
10.1590/1678-4499.186
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| Formato: |
text/html
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| Fonte: |
Bragantia v.76 n.2 2017
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| Direitos: |
info:eu-repo/semantics/openAccess
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