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| 505. |  | SOBRAL, L. F.; SMYTH, J. T.; FAGERIA, N. K.; STONE, L. F. Comparison of copper, manganese, and zinc extraction with Mehlich 1, Mehlich 3, and DTPA solutions for soils of the Brazilian Coastal Tablelands. Communications in Soil Science and Plant Analysis, New York, v. 44, n. 17, p. 2507-2513, 2013.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 509. | | BALIGAR, V. C.; ELGIN, J. H.; WRIGHT, R. J.; FAGERIA, N. K. Genetic diversity for nutrient use efficiency in cultivars and exotic germplasm of alfafa. In: INTERNATIONAL SYMPOSIUM ON GENETIC ASPECTS OF PLANT MINERAL NUTRITION, 3., 1988, Braunschweig, Germany. Genetic aspects of plant mineral nutrition: proceedings. Dordrecht: Kluwer Academic Publisher, 1990. p. 533-538. (Developments in plant and soil sciences, 42).| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 587 | |
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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. |
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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Circulação/Nível: |
B - 1 |
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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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