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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Arroz e Feijão. |
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Data corrente: |
22/11/2010 |
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Data da última atualização: |
06/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; SANTOS, A. B. dos; MOREIRA, A.; MORAES, M. F. de. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ALBERTO BAETA DOS SANTOS, CNPAF; ADONIS MOREIRA, CPAA; M. F. DE MORAES, ESALQ. |
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Título: |
Potassium soil test calibration for lowland rice on an Inceptisol. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, v. 41, n. 21, p. 2595-2601, 2010. |
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DOI: |
https://doi.org/10.1080/00103624.2010.514377 |
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Idioma: |
Inglês |
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Conteúdo: |
Potassium (K) plays an important role in many physiological and biochemical processes in plants and its adequate use is an important issue for sustainable economic crop production. Soil test?based K fertilizer recommendations are very limited for lowland rice (Oryza sativa L.) grown on Inceptisols. The objective of this study was to calibrate K soil testing for the response of lowland rice (cv. Ipagri 109) to added K. A field experiment was conducted in the farmers? field in the municipality of Lagoa da Confusão, State of Tocantins, central Brazil. The K rates used were 0, 125, 250, 375, 500, and 625 kg K ha -1 applied as broadcast and incorporated during sowing of the first rice crop. Rice responded significantly to K fertilization during 2 years of experimentation. Maximum grain yield of about 6,000 kg ha-1 was obtained with 57 mg K kg -1 soil in the first year and with 30 mg K kg?1 in the second year. This indicated that at low levels of K in the soil, nonexchangeable K was available for plant growth. Potassium use efficiency designated as agronomic efficiency (kg grain produced/kg K applied) decreased significantly in a quadratic fashion with increasing K level in the soil. Agronomic efficiency had a significantly linear association with grain yield. Hence, improving agronomic efficiency with management practices can improve rice yield. |
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Palavras-Chave: |
Inceptisol; Produção de grão. |
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Thesagro: |
Análise do solo; Arroz; Oryza sativa; Potássio. |
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Thesaurus Nal: |
Grain yield. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02123naa a2200253 a 4500
001 1867588
005 2022-06-06
008 2010 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/00103624.2010.514377$2DOI
100 1 $aFAGERIA, N. K.
245 $aPotassium soil test calibration for lowland rice on an Inceptisol.$h[electronic resource]
260 $c2010
520 $aPotassium (K) plays an important role in many physiological and biochemical processes in plants and its adequate use is an important issue for sustainable economic crop production. Soil test?based K fertilizer recommendations are very limited for lowland rice (Oryza sativa L.) grown on Inceptisols. The objective of this study was to calibrate K soil testing for the response of lowland rice (cv. Ipagri 109) to added K. A field experiment was conducted in the farmers? field in the municipality of Lagoa da Confusão, State of Tocantins, central Brazil. The K rates used were 0, 125, 250, 375, 500, and 625 kg K ha -1 applied as broadcast and incorporated during sowing of the first rice crop. Rice responded significantly to K fertilization during 2 years of experimentation. Maximum grain yield of about 6,000 kg ha-1 was obtained with 57 mg K kg -1 soil in the first year and with 30 mg K kg?1 in the second year. This indicated that at low levels of K in the soil, nonexchangeable K was available for plant growth. Potassium use efficiency designated as agronomic efficiency (kg grain produced/kg K applied) decreased significantly in a quadratic fashion with increasing K level in the soil. Agronomic efficiency had a significantly linear association with grain yield. Hence, improving agronomic efficiency with management practices can improve rice yield.
650 $aGrain yield
650 $aAnálise do solo
650 $aArroz
650 $aOryza sativa
650 $aPotássio
653 $aInceptisol
653 $aProdução de grão
700 1 $aSANTOS, A. B. dos
700 1 $aMOREIRA, A.
700 1 $aMORAES, M. F. de
773 $tCommunications in Soil Science and Plant Analysis$gv. 41, n. 21, p. 2595-2601, 2010.
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Embrapa Arroz e Feijão (CNPAF) |
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| 1. |  | BOTREL, N.; LUENGO, R. de F. A.; ALCÂNTARA, F. A. de; OLIVEIRA, V. R.; SOUSA, R. B. de; MOITA, A. W.; SILVA, G. O. da; MEIRELES, S. M.; DELVICO, F. M. dos S.; MACHADO, C. A. N.; AQUINO, E. S.; MOREIRA, M. das G. de P. Procedimentos operacionais padrão gerenciais da Unidade de Garantia de Qualidade da Embrapa Hortaliças. Brasília, DF: Embrapa Hortaliças, 2008. 92 p. (Embrapa Hortaliças. Documentos, 122)| Biblioteca(s): Embrapa Hortaliças. |
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