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| Registros recuperados : 117 | |
| 60. |  | BALIGAR, V. C.; BUNCE, J. A.; FAGERIA, N. K. Photosynthesis influenced by irradiance, external carbon dioxide concentration and temperature in Crotalaria species. In: JOINT ANNUAL METTING OF THE GEOLOGICAL SOCIETY OF AMERICA, SOIL SCIENCE SOCIETY OF AMERICA, AMERICAN SOCIETY OF AGRONOMY, CROP SCIENCE SOCIETY OF AMERICA, GULF COAST ASSOCIATION OF GEOLOGICAL, 2008, Houston. Celebrating the international year of planet earth: abstracts with programs. Austin: The University of Texas, 2008. 1 CD-ROM.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 117 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
04/04/2002 |
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Data da última atualização: |
25/06/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; SANTOS, A. B.; BALIGAR, V. C. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ALBERTO BAETA DOS SANTOS, CNPAF; VIRUPAX C. BALIGAR, USDA. |
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Título: |
Phosphorus soil test calibration for lowland rice on an inceptisol. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Agronomy Journal, v. 89, n. 5, p. 737-742, 1997. |
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DOI: |
https://doi.org/10.2134/agronj1997.00021962008900050005x |
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Idioma: |
Inglês |
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Conteúdo: |
Efficient use of an adequate level of P in crop production on high-P-fixing acid soils is essential, due to high crop response to P fertilization and the high cost of P fertilizers. Soil-test-based P fertilization recommendations are not available for lowland rice (Oryza sativa L.) grown on Inceptisols. The objective of this study was to calibrate P soil testing for the response of lowland rice (cv. Javae) to added P. Two field experiments were conducted in two years at two locations in central Brazil on Haplaquept Inceptisols. In the first year, the broadcast P levels used in both experiments were 0, 87, 175, 262, 350, and 437 kg P ha-1, applied as triple superphosphate. In the second year, each residual broadcast P level from the previous year received band application of 0, 22, 44, and 66 kg P ha-1. Soil test levels of Mehlich-1 extractable P were categorized, based on relative grain yield from the first year, as very low (0-2.6 mg P kg-1 soil), low (2.6-8.8), medium (8.8-13.0), or high (>13.0). The amount of broadcast P needed to build up soil P test concentrations at very low, low, medium, and high soil test categories was 80, 220, 292, and >444 kg P ha-1, respectively. The rice crop produced 0 to 70%, 70 to 95%, 95 to 100%, and 100% of relative yield at the very low, low, medium, and high P levels, respectively. The amount of banded fertilizer P required to obtain maximum yield at both locations was 66 kg P ha-1 for the very low and low soil P levels, 44 kg P ha-1 for the medium soil P level, and 22 kg P ha-1 for the high soil P level. MenosEfficient use of an adequate level of P in crop production on high-P-fixing acid soils is essential, due to high crop response to P fertilization and the high cost of P fertilizers. Soil-test-based P fertilization recommendations are not available for lowland rice (Oryza sativa L.) grown on Inceptisols. The objective of this study was to calibrate P soil testing for the response of lowland rice (cv. Javae) to added P. Two field experiments were conducted in two years at two locations in central Brazil on Haplaquept Inceptisols. In the first year, the broadcast P levels used in both experiments were 0, 87, 175, 262, 350, and 437 kg P ha-1, applied as triple superphosphate. In the second year, each residual broadcast P level from the previous year received band application of 0, 22, 44, and 66 kg P ha-1. Soil test levels of Mehlich-1 extractable P were categorized, based on relative grain yield from the first year, as very low (0-2.6 mg P kg-1 soil), low (2.6-8.8), medium (8.8-13.0), or high (>13.0). The amount of broadcast P needed to build up soil P test concentrations at very low, low, medium, and high soil test categories was 80, 220, 292, and >444 kg P ha-1, respectively. The rice crop produced 0 to 70%, 70 to 95%, 95 to 100%, and 100% of relative yield at the very low, low, medium, and high P levels, respectively. The amount of banded fertilizer P required to obtain maximum yield at both locations was 66 kg P ha-1 for the very low and low soil P levels, 44 kg P ha-1 for ... Mostrar Tudo |
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Palavras-Chave: |
Inceptisol. |
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Thesagro: |
Ácido; Arroz; Cerrado; Fósforo; Oryza Sativa; Solo. |
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Thesaurus NAL: |
rice. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02242naa a2200253 a 4500
001 1209341
005 2020-06-25
008 1997 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.2134/agronj1997.00021962008900050005x$2DOI
100 1 $aFAGERIA, N. K.
245 $aPhosphorus soil test calibration for lowland rice on an inceptisol.
260 $c1997
520 $aEfficient use of an adequate level of P in crop production on high-P-fixing acid soils is essential, due to high crop response to P fertilization and the high cost of P fertilizers. Soil-test-based P fertilization recommendations are not available for lowland rice (Oryza sativa L.) grown on Inceptisols. The objective of this study was to calibrate P soil testing for the response of lowland rice (cv. Javae) to added P. Two field experiments were conducted in two years at two locations in central Brazil on Haplaquept Inceptisols. In the first year, the broadcast P levels used in both experiments were 0, 87, 175, 262, 350, and 437 kg P ha-1, applied as triple superphosphate. In the second year, each residual broadcast P level from the previous year received band application of 0, 22, 44, and 66 kg P ha-1. Soil test levels of Mehlich-1 extractable P were categorized, based on relative grain yield from the first year, as very low (0-2.6 mg P kg-1 soil), low (2.6-8.8), medium (8.8-13.0), or high (>13.0). The amount of broadcast P needed to build up soil P test concentrations at very low, low, medium, and high soil test categories was 80, 220, 292, and >444 kg P ha-1, respectively. The rice crop produced 0 to 70%, 70 to 95%, 95 to 100%, and 100% of relative yield at the very low, low, medium, and high P levels, respectively. The amount of banded fertilizer P required to obtain maximum yield at both locations was 66 kg P ha-1 for the very low and low soil P levels, 44 kg P ha-1 for the medium soil P level, and 22 kg P ha-1 for the high soil P level.
650 $arice
650 $aÁcido
650 $aArroz
650 $aCerrado
650 $aFósforo
650 $aOryza Sativa
650 $aSolo
653 $aInceptisol
700 1 $aSANTOS, A. B.
700 1 $aBALIGAR, V. C.
773 $tAgronomy Journal$gv. 89, n. 5, p. 737-742, 1997.
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