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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
11/07/2018 |
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Data da última atualização: |
06/02/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PEREIRA, W.; SOUZA, J. S.; SCHULTZ, N.; REIS, V. M. |
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Afiliação: |
WILLIAN PEREIRA, UFRRJ; JAILSON SILVA SOUSA, UFRRJ; NIVALDO SCHULTZ, UFRRJ; VERONICA MASSENA REIS, CNPAB. |
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Título: |
Sugarcane productivity as a function of nitrogen fertilization and inoculation with diazotrophic plant growth-promoting bacteria. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Sugar Tech, v. 21, n. 1, p. 71?82, 2019. |
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ISSN: |
0972-1525 |
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DOI: |
h https://doi.org/10.1007/s12355-018-0638-7 |
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Idioma: |
Português |
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Conteúdo: |
Sugarcane ratoons respond to nitrogen fertilizer application, but the N efficiency is low. Diazotrophs applied as a growth promoter bacterium can influence crop yield by several mechanisms, including a greater root growth and higher N absorption. The objective of the present work was to evaluate the stalk and sugar yields, and the economic index of sugarcane as a function of nitrogen fertilization and inoculation with diazotrophic plant growth-promoting bacteria (DPGPB). Two experiments were implemented in areas of two sugarcane mills in the state of São Paulo, Brazil: one in the Diamante Mill and one in the Santa Helena Mill. The experimental design was a randomized complete block with four N-fertilizer doses (0, 50, 100 and 150 kg ha?1), with or without DPGPB inoculation using five replicates. The application of the inoculant promoted a productivity increase in the Diamante Mill for all treatments with N, even in the absence of N-fertilization, while at the Santa Helena Mill that occurred with the 50 kg ha?1 dosage. The inoculation with DPGPB, together with the application of the 50 kg N ha?1 dose, achieved the highest economic return at both mills. The application of the inoculant associated with a low dose of N-fertilizer was profitable and proven feasible for field application. The results evidenced the viability of the technology for sugarcane production, with gains in productivity and a possible reduction in nitrogen fertilizatio |
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Palavras-Chave: |
Diazotrophic bacteria; Growth promotion Sustainability; Inoculant. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
null
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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