Data/hora: 10/06/2024 03:53:03

Biblioteca(s): | Embrapa Agrobiologia.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | B - 1
Data corrente: | 11/07/2018
Data da última atualização: | 06/02/2019
Autoria: | PEREIRA, W.; SOUZA, J. S.; SCHULTZ, N.; REIS, V. M.
Afiliação: | WILLIAN PEREIRA, UFRRJ; JAILSON SILVA SOUSA, UFRRJ; NIVALDO SCHULTZ, UFRRJ; VERONICA MASSENA REIS, CNPAB.
Título: | Sugarcane productivity as a function of nitrogen fertilization and inoculation with diazotrophic plant growth-promoting bacteria.
Ano de publicação: | 2019
Fonte/Imprenta: | Sugar Tech, v. 21, n. 1, p. 71?82, 2019.
ISSN: | 0972-1525
DOI: | h https://doi.org/10.1007/s12355-018-0638-7
Idioma: | Português
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
Palavras-Chave: | Diazotrophic bacteria; Growth promotion Sustainability; Inoculant.
Categoria do assunto: | S Ciências Biológicas
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (40804-1) - UPC - AP - DD - 2018.00083 -  - 2018.00083 - DIS