Data/hora: 25/05/2024 04:20:58

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Unidades Centrais.
Tipo da produção científica: | Artigo em Periódico Indexado
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:

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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