Data/hora: 25/06/2024 15:19:07

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