Data/hora: 20/05/2024 04:33:28

Biblioteca(s): 	Embrapa Agrobiologia; Embrapa Arroz e Feijão.	
Data corrente: 	07/11/1994	
Data da última atualização: 	27/06/1995	
Autoria: 	MULLER, S.; PEREIRA, P. A. A.; MARTIN, P.	
Título: 	Effect of different levels of mineral nitrogen on nodulation and N2 fixation of two cultivars of common bean (Phaseolus vulgaris L.).	
Ano de publicação: 	1993	
Fonte/Imprenta: 	Plant Soil, v. 152, n. 1, p. 139-143, 1993.	
Idioma: 	Inglês	
Conteúdo: 	An experiment was conducted under greenhouse conditions to evaluate the effect of mineral nitrogen on N 2 fixation of two cultivars of Phaseolus vulgaris L., Puebla 152 and Negro Argel. Nitrogen application was 0, 2.5, 12.5 and 25 mg N kg -1 of a vermiculite-sand-mixture at planting time. Shoot and root growth were elevated by nitrogen application at all growth stages. During vegetative growth (V 5) nodule dry weight and nitrogenase activity (acetylene reducing activity) per plant were reduced by nitrogen supply in both cultivars, but less in Negro Argel than in Puebla 152. At later stages nodulation in nitrogen-treated Puebla 152 did not differ from that in non-treated plants, whereas increased nodule number was found in Negro Argel at high nitrogen levels. The influence of mineral N on the total amount of nitrogen fixed in the two bean cultivars was only slightly different.	
Palavras-Chave: 	FBN; Genótipo da planata.	
Thesagro: 	Amônia; Feijão; Nitrato; Nitrogênio; Nodulação; Phaseolus Vulgaris.	
Thesaurus Nal: 	Ara; Beans; Nitrogen fixation; Nodulation.	
Categoria do assunto: 	--
F Plantas e Produtos de Origem Vegetal	
Registro original: 	Embrapa Agrobiologia (CNPAB)	
Exemplares: 	CNPAF - (7074-1) - UPC - AP - DD - 1993 -  - 1993 - DIS
CNPAB - (21808-1) - ADC - AP - -- -  -  - 19675 - DIS