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Registro Completo |
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
04/04/2012 |
Data da última atualização: |
09/04/2012 |
Autoria: |
CARDOSO, G. G. de; KLAR, A. E. |
Título: |
Fracionamento da fertirrigação e seu efeito na produção da alface sob ambiente protegido. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Irriga, Botucatu, v. 16, n. 3, p. 259-270, set. 2011. |
Idioma: |
Português |
Palavras-Chave: |
Massa fresca. |
Thesagro: |
Alface; Cultivo protegido; Irrigação; Lactuca Sativa; Parcela. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00554naa a2200193 a 4500 001 1921616 005 2012-04-09 008 2011 bl uuuu u00u1 u #d 100 1 $aCARDOSO, G. G. de 245 $aFracionamento da fertirrigação e seu efeito na produção da alface sob ambiente protegido. 260 $c2011 650 $aAlface 650 $aCultivo protegido 650 $aIrrigação 650 $aLactuca Sativa 650 $aParcela 653 $aMassa fresca 700 1 $aKLAR, A. E. 773 $tIrriga, Botucatu$gv. 16, n. 3, p. 259-270, set. 2011.
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Registro Completo
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
25/10/1994 |
Data da última atualização: |
05/10/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FAGERIA, N. K.; MORAIS, O. P.; BALIGAR, V. C.; WRIGHT, R. J. |
Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ORLANDO PEIXOTO DE MORAIS, CNPAF. |
Título: |
Response of rice cultivars to phosphorus supply on an oxisol. |
Ano de publicação: |
1988 |
Fonte/Imprenta: |
Fertilizer Research, v. 16, n. 3, p. 195-206, July 1988. |
DOI: |
https://doi.org/10.1007/BF01051370 |
Idioma: |
Inglês |
Conteúdo: |
Genotypic differences in absorption or utilization of P might be exploited to improve efficiency of fertilizer use or to obtain higher productivity on P-deficient soils. The objective of this study was to evaluate responses by 75 genotypes of upland rice (Oryza sativa L.) to two soil P levels in two field experiments. In the first experiment, soil P levels (Mehlich 1) were 1.5 mg kg-1 and 5 mg kg-1, and in the second experiment, 3 mg kg-1 and 4.7 mg kg-1 of soil, respectively. Rice cultivars differed significantly in shoot dry matter production at flowering, grain yield, and plant P status. Based on a grain yield efficiency index, cultivars were classified as P-efficient or P-inefficient. Shoot dry matter was more sensitive to P-deficiency but was not related to grain yield. Phosphorus use efficiency was higher under the low P treatment. Phosphorus uptake was significantly correlated with dry matter, P concentration and P-efficiency ratio. Results of this study indicate that genetic differences in P-use efficiency exist among upland rice cultivars and may be exploited in breeding programs. |
Palavras-Chave: |
Fertilizacao; Genotypic differences. |
Thesagro: |
Arroz; Cerrado; Fósforo; Oryza Sativa; Oxisol; Solo. |
Thesaurus NAL: |
Oxisols; Phosphorus; Rice. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/226657/1/fr-1988.pdf
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Marc: |
LEADER 01901naa a2200301 a 4500 001 1197735 005 2021-10-05 008 1988 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/BF01051370$2DOI 100 1 $aFAGERIA, N. K. 245 $aResponse of rice cultivars to phosphorus supply on an oxisol.$h[electronic resource] 260 $c1988 520 $aGenotypic differences in absorption or utilization of P might be exploited to improve efficiency of fertilizer use or to obtain higher productivity on P-deficient soils. The objective of this study was to evaluate responses by 75 genotypes of upland rice (Oryza sativa L.) to two soil P levels in two field experiments. In the first experiment, soil P levels (Mehlich 1) were 1.5 mg kg-1 and 5 mg kg-1, and in the second experiment, 3 mg kg-1 and 4.7 mg kg-1 of soil, respectively. Rice cultivars differed significantly in shoot dry matter production at flowering, grain yield, and plant P status. Based on a grain yield efficiency index, cultivars were classified as P-efficient or P-inefficient. Shoot dry matter was more sensitive to P-deficiency but was not related to grain yield. Phosphorus use efficiency was higher under the low P treatment. Phosphorus uptake was significantly correlated with dry matter, P concentration and P-efficiency ratio. Results of this study indicate that genetic differences in P-use efficiency exist among upland rice cultivars and may be exploited in breeding programs. 650 $aOxisols 650 $aPhosphorus 650 $aRice 650 $aArroz 650 $aCerrado 650 $aFósforo 650 $aOryza Sativa 650 $aOxisol 650 $aSolo 653 $aFertilizacao 653 $aGenotypic differences 700 1 $aMORAIS, O. P. 700 1 $aBALIGAR, V. C. 700 1 $aWRIGHT, R. J. 773 $tFertilizer Research$gv. 16, n. 3, p. 195-206, July 1988.
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