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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
30/09/2013 |
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Data da última atualização: |
31/10/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; MOREIRA, A.; FERREIRA, E. P. B.; KNUPP, A. M. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ADONIS MOREIRA, CNPSO; ENDERSON PETRONIO DE BRITO FERREIRA, CNPAF; ADRIANO MOREIRA KNUPP, CNPAF. |
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Título: |
Potassium-use efficiency in upland rice genotypes. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 44, p. 2656-2665, 2013. |
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ISSN: |
0010-3624 |
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DOI: |
10.1080/00103624.2013.813031 |
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Idioma: |
Inglês |
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Conteúdo: |
Potassium (K) uptake is greatest among essential nutrients for rice. Data related to yield, yield components, and K-use efficiency by upland rice genotypes are limited. A greenhouse experiment was conducted to evaluate influence of K on growth, yield and yield components, and K-use efficiency by upland rice genotypes. Potassium levels applied to an Oxisol were zero (natural K level) and 200 mg K kg1 of soil and 20 upland rice genotypes were evaluated. Plant height, shoot dry weight, grain yield, 1000-grain weight, and spikelet sterility were significantly affected by K and genotype treatments. Genotypes Primavera and BRA 1600 were the most efficient and genotype BRAMG Curinga was most inefficient in producing grain yield. Plant growth (plant height and shoot dry weight) and yield components (panicle number, grain harvest index, 1000-grain weight, and panicle length) were significantly and positively associated with grain yield. However, spikelet sterility was significantly and negatively correlated with grain yield. |
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Thesagro: |
Arroz; Oryza sativa; Potássio. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 01638naa a2200217 a 4500
001 1967409
005 2013-10-31
008 2013 bl uuuu u00u1 u #d
022 $a0010-3624
024 7 $a10.1080/00103624.2013.813031$2DOI
100 1 $aFAGERIA, N. K.
245 $aPotassium-use efficiency in upland rice genotypes.
260 $c2013
520 $aPotassium (K) uptake is greatest among essential nutrients for rice. Data related to yield, yield components, and K-use efficiency by upland rice genotypes are limited. A greenhouse experiment was conducted to evaluate influence of K on growth, yield and yield components, and K-use efficiency by upland rice genotypes. Potassium levels applied to an Oxisol were zero (natural K level) and 200 mg K kg1 of soil and 20 upland rice genotypes were evaluated. Plant height, shoot dry weight, grain yield, 1000-grain weight, and spikelet sterility were significantly affected by K and genotype treatments. Genotypes Primavera and BRA 1600 were the most efficient and genotype BRAMG Curinga was most inefficient in producing grain yield. Plant growth (plant height and shoot dry weight) and yield components (panicle number, grain harvest index, 1000-grain weight, and panicle length) were significantly and positively associated with grain yield. However, spikelet sterility was significantly and negatively correlated with grain yield.
650 $aArroz
650 $aOryza sativa
650 $aPotássio
700 1 $aMOREIRA, A.
700 1 $aFERREIRA, E. P. B.
700 1 $aKNUPP, A. M.
773 $tCommunications in Soil Science and Plant Analysis, New York$gv. 44, p. 2656-2665, 2013.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
21/02/2009 |
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Data da última atualização: |
05/05/2010 |
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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: |
CAMPO, R. J.; ARAUJO, R. S.; HUNGRIA, M. |
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Afiliação: |
RUBENS JOSÉ CAMPO, CNPSo; RICARDO SILVA ARAUJO, CNPq-MCT; MARIANGELA HUNGRIA DA CUNHA, CNPSo. |
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Título: |
Molybdenum-enriched soybean seeds enhance N accumulation, seed yield,and seed protein content in Brazil. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Field Crops Research, v. 110, n. 3, p. 219-224, Feb. 2009. |
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Idioma: |
Inglês |
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Conteúdo: |
High soybean yields require large amounts of nitrogen (N), which can be obtainedmainly from symbiotic N2 fixation. However, the efficiency of this biological process can be limited by micronutrient deficiencies, especially of molybdenum (Mo). In Brazil, soybean generally responds positively to fertilization with Mo in soils of low fertility and in fertile soils depleted ofMo due to long-term cropping. The micronutrient can be supplied by seed treatment, however toxicity of Mo sources to Bradyrhizobium strains applied to seed as inoculant has been observed, resulting in bacterial death and reductions in nodulation, N2 fixation and grain yield. Therefore, use of seeds enriched in Mo could be a viable alternative to exterior seed treatment, allowing elite inoculant strains of Bradyrhizobium to sustain high rates of biological N2 fixation. We demonstrated the feasibility of producing Mo-rich seeds of several soybean cultivars, by means of two foliar sprays of 400 g Mo ha_1 each, between the R3 and R5 stages, with aminimum interval of 10 days between sprays. As a result of this method, considerable increases in seed-Mo content were obtained, of as much as 3000%, in comparison to seeds obtained from plants which received no Mo. In field experiments performed in soils with low N content and without any N-fertilizer supply, inoculation of Mo-rich seeds produced plants with increased N and Mo contents in the grain and higher yields of total N and of grain. In most cases, Mo-rich soybean seeds did not require any further application of Mo-fertilizer. MenosHigh soybean yields require large amounts of nitrogen (N), which can be obtainedmainly from symbiotic N2 fixation. However, the efficiency of this biological process can be limited by micronutrient deficiencies, especially of molybdenum (Mo). In Brazil, soybean generally responds positively to fertilization with Mo in soils of low fertility and in fertile soils depleted ofMo due to long-term cropping. The micronutrient can be supplied by seed treatment, however toxicity of Mo sources to Bradyrhizobium strains applied to seed as inoculant has been observed, resulting in bacterial death and reductions in nodulation, N2 fixation and grain yield. Therefore, use of seeds enriched in Mo could be a viable alternative to exterior seed treatment, allowing elite inoculant strains of Bradyrhizobium to sustain high rates of biological N2 fixation. We demonstrated the feasibility of producing Mo-rich seeds of several soybean cultivars, by means of two foliar sprays of 400 g Mo ha_1 each, between the R3 and R5 stages, with aminimum interval of 10 days between sprays. As a result of this method, considerable increases in seed-Mo content were obtained, of as much as 3000%, in comparison to seeds obtained from plants which received no Mo. In field experiments performed in soils with low N content and without any N-fertilizer supply, inoculation of Mo-rich seeds produced plants with increased N and Mo contents in the grain and higher yields of total N and of grain. In most cases, Mo-rich soyb... Mostrar Tudo |
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Palavras-Chave: |
Soybean. |
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Thesagro: |
Soja. |
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Categoria do assunto: |
-- |
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URL: |
https://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6T6M-4TSC3Y4-1-1&_cdi=5034&_user=4353287&_orig=browse&_coverDate=02%2F28%2F2009&_sk=998899996&view=c&wchp=dGLbVtz-zSkzk&md5=20760c0eb4b362336386991c2b35988c&ie=/sdarticle.pdf
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Marc: |
LEADER 02054naa a2200169 a 4500
001 1471220
005 2010-05-05
008 2009 bl --- 0-- u #d
100 1 $aCAMPO, R. J.
245 $aMolybdenum-enriched soybean seeds enhance N accumulation, seed yield,and seed protein content in Brazil.
260 $c2009
520 $aHigh soybean yields require large amounts of nitrogen (N), which can be obtainedmainly from symbiotic N2 fixation. However, the efficiency of this biological process can be limited by micronutrient deficiencies, especially of molybdenum (Mo). In Brazil, soybean generally responds positively to fertilization with Mo in soils of low fertility and in fertile soils depleted ofMo due to long-term cropping. The micronutrient can be supplied by seed treatment, however toxicity of Mo sources to Bradyrhizobium strains applied to seed as inoculant has been observed, resulting in bacterial death and reductions in nodulation, N2 fixation and grain yield. Therefore, use of seeds enriched in Mo could be a viable alternative to exterior seed treatment, allowing elite inoculant strains of Bradyrhizobium to sustain high rates of biological N2 fixation. We demonstrated the feasibility of producing Mo-rich seeds of several soybean cultivars, by means of two foliar sprays of 400 g Mo ha_1 each, between the R3 and R5 stages, with aminimum interval of 10 days between sprays. As a result of this method, considerable increases in seed-Mo content were obtained, of as much as 3000%, in comparison to seeds obtained from plants which received no Mo. In field experiments performed in soils with low N content and without any N-fertilizer supply, inoculation of Mo-rich seeds produced plants with increased N and Mo contents in the grain and higher yields of total N and of grain. In most cases, Mo-rich soybean seeds did not require any further application of Mo-fertilizer.
650 $aSoja
653 $aSoybean
700 1 $aARAUJO, R. S.
700 1 $aHUNGRIA, M.
773 $tField Crops Research$gv. 110, n. 3, p. 219-224, Feb. 2009.
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