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| Registros recuperados : 117 | |
| Registros recuperados : 117 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
25/10/1994 |
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Data da última atualização: |
05/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; MORAIS, O. P.; BALIGAR, V. C.; WRIGHT, R. J. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ORLANDO PEIXOTO DE MORAIS, CNPAF. |
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Título: |
Response of rice cultivars to phosphorus supply on an oxisol. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Fertilizer Research, v. 16, n. 3, p. 195-206, July 1988. |
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DOI: |
https://doi.org/10.1007/BF01051370 |
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Idioma: |
Inglês |
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Conteúdo: |
Genotypic differences in absorption or utilization of P might be exploited to improve efficiency of fertilizer use or to obtain higher productivity on P-deficient soils. The objective of this study was to evaluate responses by 75 genotypes of upland rice (Oryza sativa L.) to two soil P levels in two field experiments. In the first experiment, soil P levels (Mehlich 1) were 1.5 mg kg-1 and 5 mg kg-1, and in the second experiment, 3 mg kg-1 and 4.7 mg kg-1 of soil, respectively. Rice cultivars differed significantly in shoot dry matter production at flowering, grain yield, and plant P status. Based on a grain yield efficiency index, cultivars were classified as P-efficient or P-inefficient. Shoot dry matter was more sensitive to P-deficiency but was not related to grain yield. Phosphorus use efficiency was higher under the low P treatment. Phosphorus uptake was significantly correlated with dry matter, P concentration and P-efficiency ratio. Results of this study indicate that genetic differences in P-use efficiency exist among upland rice cultivars and may be exploited in breeding programs. |
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Palavras-Chave: |
Fertilizacao; Genotypic differences. |
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Thesagro: |
Arroz; Cerrado; Fósforo; Oryza Sativa; Oxisol; Solo. |
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Thesaurus NAL: |
Oxisols; Phosphorus; Rice. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/226657/1/fr-1988.pdf
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Marc: |
LEADER 01901naa a2200301 a 4500
001 1197735
005 2021-10-05
008 1988 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/BF01051370$2DOI
100 1 $aFAGERIA, N. K.
245 $aResponse of rice cultivars to phosphorus supply on an oxisol.$h[electronic resource]
260 $c1988
520 $aGenotypic differences in absorption or utilization of P might be exploited to improve efficiency of fertilizer use or to obtain higher productivity on P-deficient soils. The objective of this study was to evaluate responses by 75 genotypes of upland rice (Oryza sativa L.) to two soil P levels in two field experiments. In the first experiment, soil P levels (Mehlich 1) were 1.5 mg kg-1 and 5 mg kg-1, and in the second experiment, 3 mg kg-1 and 4.7 mg kg-1 of soil, respectively. Rice cultivars differed significantly in shoot dry matter production at flowering, grain yield, and plant P status. Based on a grain yield efficiency index, cultivars were classified as P-efficient or P-inefficient. Shoot dry matter was more sensitive to P-deficiency but was not related to grain yield. Phosphorus use efficiency was higher under the low P treatment. Phosphorus uptake was significantly correlated with dry matter, P concentration and P-efficiency ratio. Results of this study indicate that genetic differences in P-use efficiency exist among upland rice cultivars and may be exploited in breeding programs.
650 $aOxisols
650 $aPhosphorus
650 $aRice
650 $aArroz
650 $aCerrado
650 $aFósforo
650 $aOryza Sativa
650 $aOxisol
650 $aSolo
653 $aFertilizacao
653 $aGenotypic differences
700 1 $aMORAIS, O. P.
700 1 $aBALIGAR, V. C.
700 1 $aWRIGHT, R. J.
773 $tFertilizer Research$gv. 16, n. 3, p. 195-206, July 1988.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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