Data/hora: 16/06/2024 01:34:44

Biblioteca(s): | Embrapa Agrobiologia.
Data corrente: | 25/10/2021
Data da última atualização: | 25/10/2021
Autoria: | MONTEIRO, E. de C.; SILVA, C. G. N. da S.; MARTINS, M. dos R.; REIS, V. M.; BODDEY, R. M.; ALVES, B. J. R.; URQUIAGA, S.
Afiliação: | EDEVALDO DE CASTRO MONTEIRO, UFRRJ; CLEUDISON GABRIEL NASCIMENTO DA SILVA, UFRRJ; MÁRCIO DOS REIS MARTINS, UFRRJ; VERONICA MASSENA REIS, CNPAB; ROBERT MICHAEL BODDEY, CNPAB; BRUNO JOSE RODRIGUES ALVES, CNPAB; SEGUNDO SACRAMENTO U CABALLERO, CNPAB.
Título: | Strategy for the sampling of sugarcane plants for the reliable quantifcation of N2 fixation Using 15N natural abundance.
Ano de publicação: | 2021
Fonte/Imprenta: | Journal of Soil Science and Plant Nutrition, publishing online 9 aug. 2021
ISSN: | 0718-9508
DOI: | https://doi.org/10.1007/s42729-021-00561-6
Idioma: | Inglês
Conteúdo: | The 15N natural abundance (&#948;15N) technique ofers good prospects for the quantifcation of the contribution of biological nitrogen fxation (BNF) to crop nutrition. The objectives of this study were to determine which plant parts best represented the whole plant with respect to &#948;15N and to quantify the BNF contribution to sugarcane. The experiment was carried out in pots of soil (100 kg pot&#8722;1) from the feld. The sugarcane varieties used were RB867515 and RB92579 with the reference plants Brachiaria decumbens, millet (Pennisetum americanum) and sorghum (Sorghum bicolor). The experimental design was randomised blocks with four replications. The treatments were inoculation of the sugarcane with or without diazotrophic bacteria and the diferent parts of the sugarcane plant (root, green leaf, senescent leaf and diferent stem sections). The &#948;15N of diferent cane parts and varieties ranged from+2.68 to+5.85? after 365 days, while the &#948;15N of reference plants were from+7.8 to+8.3?. The mean contribution of BNF to the sugarcane crop N supply was estimated to be 47% with no efect of variety or inoculation. The results indicate that the &#948;15N value of the entire shoot can be considered to represent the entire sugarcane plant, but no single organ could be relied on for this purpose
Palavras-Chave: | 15N natural abundance; N2 fxation; Nitrogen isotopes; Reference plants.
Thesaurus Nal: | Sugarcane.
Categoria do assunto: | S Ciências Biológicas
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (41768-1) - UPC - AP - DD -  -  -  - DIS