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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Arroz e Feijão. |
Data corrente: |
22/11/2010 |
Data da última atualização: |
06/06/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FAGERIA, N. K.; SANTOS, A. B. dos; MOREIRA, A.; MORAES, M. F. de. |
Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ALBERTO BAETA DOS SANTOS, CNPAF; ADONIS MOREIRA, CPAA; M. F. DE MORAES, ESALQ. |
Título: |
Potassium soil test calibration for lowland rice on an Inceptisol. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, v. 41, n. 21, p. 2595-2601, 2010. |
DOI: |
https://doi.org/10.1080/00103624.2010.514377 |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Inceptisol; Produção de grão. |
Thesagro: |
Análise do solo; Arroz; Oryza sativa; Potássio. |
Thesaurus Nal: |
Grain yield. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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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Registros recuperados : 50 | |
19. | | FAGERIA, N. K.; MOREIRA, A.; MORAES, L. A. C.; MORAES, M. F. Root growth, nutrient uptake, and nutrient-use efficiency by roots of tropical legume cover crops as influenced by phosphorus fertilization. Communications in Soil Science and Plant Analysis, New York, v. 45, n. 5, p. 555-569, 2014.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Soja. |
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20. | | MORAES, M. F.; NUTTI, M. R.; WATANABE, E.; CARVALHO, J. L. V. de. Práticas agronômicas para aumentar o fornecimento de nutrientes e vitaminas nos produtos agrícolas alimentares. In: SIMPÓSIO BRASILEIRO DE AGROPECUÁRIA SUSTENTÁVEL, 1., 2009, Viçosa, MG. Agricultura, pecuária e cooperativismo: anais. Viçosa, MG: Universidade Federal de Viçosa, 2009. p. 298-312.Tipo: Artigo em Anais de Congresso / Nota Técnica |
Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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