Data/hora: 23/09/2024 23:49:09

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	08/09/2017	
Data da última atualização: 	10/01/2018	
Autoria: 	SATURNO, D. F.; CEREZINI, P.; SILVA FILHO, P. M. da; OLIVEIRA, A. B. de; OLIVEIRA, M. C. N. de; HUNGRIA, M.; NOGUEIRA, M. A.	
Afiliação: 	DIOGO FERNANDO SATURNO, UEL; PAULA CEREZIN, UEL; PEDRO MOREIRA DA SILVA FILHO, CNPSO; ARNOLD BARBOSA DE OLIVEIRA, CNPSO; MARIA CRISTINA NEVES DE OLIVEIRA, CNPSO; MARIANGELA HUNGRIA DA CUNHA, CNPSO; MARCO ANTONIO NOGUEIRA, CNPSO.	
Título: 	Mineral nitrogen impairs the biological nitrogen fixation in soybean of determinate and indeterminate growth types.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Journal of Plant Nutrition, v. 40, n. 12, p. 1690-1701, 2017.	
ISSN: 	1532-4087	
DOI: 	http://dx.doi.org/10.1080/01904167.2017.1310890	
Idioma: 	Inglês	
Conteúdo: 	Soybean (Glycine max Merrill) crop production in Brazil relies mainly on biological nitrogen fixation (BNF) for nitrogen (N) supply. Recent adoption of indeterminate growth-type genotypes has raised doubts on the need for supplemental mineral N that might negatively affect the BNF. We assessed the effects of mineral N on BNF attributes of soybean genotypes grown in central and southern Brazil. Genotypes were inoculated with Bradyrhizobium sp. and/or received mineral N in three sets of experiments. In the first set, two genotypes received increasing rates of mineral N in nutrient solution, which consistently reduced the BNF. In the second set, mineral N applied at sowing and/or topdressing reduced nodulation and ureides-N in determinate and indeterminate growth-type genotypes. In the third set, mineral N applied at R5.3 stage, foliar or as topdressing, did not increase grain yield in four field experiments. Mineral N impaired BNF irrespective of the growth type and had on effect on grain yield.	
Palavras-Chave: 	Fixação biológica de nitrogênio.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Soja (CNPSO)	
Exemplares: 	CNPSO - (38073-1) - UPC - AP - DD -  -  -  - DIS