Data/hora: 23/09/2024 10:17:56

Biblioteca(s): 	Embrapa Arroz e Feijão; Embrapa Unidades Centrais.	
Data corrente: 	31/10/1994	
Data da última atualização: 	07/05/2002	
Autoria: 	FAGERIA, N. K.	
Título: 	Rice Cultivars Response to Phosphorus in Nutrient Solution.	
Ano de publicação: 	1989	
Fonte/Imprenta: 	Pesquisa Agropecuária Brasileira, Brasília, v. 24, n.6, p. 699-702, jun. 1989	
Idioma: 	Inglês	
Conteúdo: 	Due to widespread deficiency of phosphorus in acid soils iç various parts; of the world, germplasrn screening for identification of less susceptible cultivars of crop plants has hecome as essential as recommendation of proper methods and levels of P fertilization. To study the relationship between differential susceptibilíty to P deficiency, four cultivars of rice (Oryza sativa L.) were grown in nutrient solution at 8.06, 32.25, 322.58 gM (0.25, 1 and 10 ~LgP.m1-1) of applied P. After 54 days of growth in nutrient solution, dry matter yield of roots and shoots and P and K uptake were measured. Rice cultivars did not differ widely in dry matter production and P uptake. Among the growth parameters, shoot dry weight was the best parameter for classifying cultivars as to P efficieney. Based on this parameter, cultivars were classified for P efficiency in the order: IRAT 104 > Beira Campo > Bico Torto > Quatro Meses. Phosphorus uptake was increased with increasing concentrations of P in the growth medium. This study suggests that this methodology can be used for identification of P efficient rice cultivars.

Palavras-Chave: 	P uptake; P-efficient cultivar.	
Thesagro: 	Absorção; Arroz; Fósforo; Oryza Sativa; Solução Nutritiva.	
Categoria do assunto: 	--
F Plantas e Produtos de Origem Vegetal	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/214103/1/CNPAF-1989-pab0001.pdf	
Registro original: 	Embrapa Unidades Centrais (AI-SEDE)	
Exemplares: 	AI-SEDE - (22210-1) - UMT - AP - -- - 63072081 - P474 -  - DIS
CNPAF - (6871-1) - UPC - AP - PP - 1989 -  - 1989 - DIS