Data/hora: 20/06/2024 02:30:25

Biblioteca(s): 	Embrapa Arroz e Feijão.	
Data corrente: 	17/01/2008	
Data da última atualização: 	06/06/2022	
Autoria: 	FAGERIA, N. K.; BARBOSA FILHO, M. P.	
Afiliação: 	NAND KUMAR FAGERIA, CNPAF; MOREL PEREIRA BARBOSA FILHO, CNPAF.	
Título: 	Dry-matter and grain yield, nutrient uptake, and phosphorus use-efficiency of lowland rice as influenced by phosphorus fertilization.	
Ano de publicação: 	2007	
Fonte/Imprenta: 	Communications in Soil Science and Plant Analysis, v. 38, n. 9/10, p. 1289-1297, May 2007.	
DOI: 	https://doi.org/10.1080/00103620701328537	
Idioma: 	Inglês	
Conteúdo: 	Phosphorus (P) deficiency is one of the most yield-limiting factors in lowland acid soils of Brazil. A field experiment was conducted during two consecutive years to determine dry-matter and grain yield, nutrient uptake, and P-use efficiency of lowland rice (Oryza sativa L.) grown on an acidic Inceptisol. Phosphorus rates used in the experiment were 0, 131, 262, 393, 524, and 655 kg P ha 21 applied as broadcast through termophosphate yoorin. Dry- matter yield of shoot and grain yield were significantly ( P < 0.01) and quadratically increased with P fertilization. Concentrations ( content per unit dry- weight leaves) of nitrogen ( N), P, and magnesium ( Mg) were significantly increased in a quadratic fashion with the increasing P rates. However, concentrations of potassium ( K), calcium ( Ca), zinc ( Zn), copper ( Cu), and iron ( Fe) were not influenced significantly with P fertilization, and Mn concentration was significantly decreased with increasing P rates. Phosphorus use efficiencies ( agronomic, physiological, agrophysiological, recovery, and utilization) were decreased with increasing P rates. However, magnitude of decrease varied from efficiency to ? efficiency.	
Palavras-Chave: 	Agronomic efficiency; Fertilização; Physiologial efficiency.	
Thesagro: 	Arroz; Fósforo; Oryza Sativa; Solo Ácido.	
Thesaurus Nal: 	phosphorus; rice.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (26269-1) - UPC - AP - DD - 2007 -  - 2007 - DIS