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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Agropecuária Oeste; Embrapa Amapá; Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Arroz e Feijão; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Meio-Norte; Embrapa Rondônia; Embrapa Roraima; Embrapa Unidades Centrais. MenosEmbrapa Agrobiologia; Embrapa Agropecuária Oeste; Embrapa Amapá; Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Arroz e Feijão; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Meio-Norte; Embrapa Rondônia; Embrapa Roraima... Mostrar Todas |
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Data corrente: |
24/08/2005 |
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Data da última atualização: |
25/07/2006 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
FONSECA, J. R.; CASTRO, E. da M. de; MORAIS, O. P. de. |
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Afiliação: |
Embrapa Arroz e Feijão. |
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Título: |
Descritores morfo agronômicos e fenológicos de cultivares comerciais de arroz (Oryza sativa L.) de terras altas. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2004. |
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Páginas: |
27 p. |
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Série: |
(Embrapa Arroz e Feijão. Documentos, 162).
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Idioma: |
Português |
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Conteúdo: |
Cruzamento, genealogia e desenvolvimento das cultivares: BRS Colosso, BRS Liderança, BRS Vencedora, BRSMG Curinga, BRS Soberana, BRS Aroma, BRS Caripuna, BRS Talento. Metodologia de caracterização das cultivares. |
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Palavras-Chave: |
Arroz de terras altas; Característica morfo agronômica; Característica morfoagronômica; Características morfoagronômicas; Cultivar; Cultivares comerciais; Melhoramento genético; Terras altas. |
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Thesagro: |
Arroz; Banco de Germoplasma; Oryza Sativa; Variedade. |
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Thesaurus Nal: |
rice. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPAF/22920/1/doc_162.pdf
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Marc: |
LEADER 01193nam a2200313 a 4500
001 1213617
005 2006-07-25
008 2004 bl uuuu u0uu1 u #d
100 1 $aFONSECA, J. R.
245 $aDescritores morfo agronômicos e fenológicos de cultivares comerciais de arroz (Oryza sativa L.) de terras altas.
260 $aSanto Antônio de Goiás: Embrapa Arroz e Feijão$c2004
300 $a27 p.
490 $a(Embrapa Arroz e Feijão. Documentos, 162).
520 $aCruzamento, genealogia e desenvolvimento das cultivares: BRS Colosso, BRS Liderança, BRS Vencedora, BRSMG Curinga, BRS Soberana, BRS Aroma, BRS Caripuna, BRS Talento. Metodologia de caracterização das cultivares.
650 $arice
650 $aArroz
650 $aBanco de Germoplasma
650 $aOryza Sativa
650 $aVariedade
653 $aArroz de terras altas
653 $aCaracterística morfo agronômica
653 $aCaracterística morfoagronômica
653 $aCaracterísticas morfoagronômicas
653 $aCultivar
653 $aCultivares comerciais
653 $aMelhoramento genético
653 $aTerras altas
700 1 $aCASTRO, E. da M. de
700 1 $aMORAIS, O. P. de
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
11/03/2021 |
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Data da última atualização: |
11/03/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SARKIS, L.; GUARESHI, R. F.; MARTINS, M. R.; SANTANNA, S. A. C.; ZAMAN, M.; JANTALIA, C. P.; ALVES, B. J. R.; BODDEY, R. M.; ARAUJO, E. da S.; URQUIAGA, S. |
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Afiliação: |
LEONARDO SARKIS, UFRRJ; RONI FERNANDES GUARESCH, UFRRJ; MARCIO REIS MARTINS, UFRRJ; SELENOBALDO A. C. SANT'ANNA, UFRRJ; MOHAMMAD ZAMAN, FAO/AIEA; CLAUDIA POZZI JANTALIA, CNPAB; BRUNO JOSE RODRIGUES ALVES, CNPAB; ROBERT MICHAEL BODDEY, CNPAB; EDNALDO DA SILVA ARAUJO, CNPAB; SEGUNDO SACRAMENTO U CABALLERO, CNPAB. |
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Título: |
A simple and easy method to measure ammonia volatilization: accuracy under field conditions |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Pedosphere, v. 31, n. 2, p. 255-264, 2021. |
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ISSN: |
1002-0160 |
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DOI: |
https://doi.org/10.1016/S1002-0160(20)60077-7 |
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Idioma: |
Inglês |
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Conteúdo: |
Field studies on soil ammonia (NH3) volatilization are restricted in many countries owing to the high costs commonly demanded for accurate quantification. We assessed the accuracy of a simple, open chamber design to capture NH3 under field conditions, as affected by different chamber placement schemes. Urea-15N was surface applied to lysimeters installed in the spaces between maize rows. Open chambers made from plastic bottles were installed on each lysimeter with variations in i) N rates (3, 8, 13, and 18 g m?2), ii) the height of the chamber above the soil surface (0, 5, and 10 mm), and iii) chamber relocation (static vs. dynamic). Reference lysimeters without chambers were used to measure NH3 losses by 15N-balance. Losses of NH3 -N accounted for more than 50% of the applied N. Relocation of the chambers had no impact on their NH3-trapping efficiencies, proving to be an unnecessary procedure. Variation in the height of the chambers above the soil surface affected the capture of NH3, but the results still maintained high linearity with the NH3 losses quantified by the reference method (R2 > 0.98). When the same placement scheme used in the introductory study describing the chamber was utilized (static and touching the soil surface), we found a trapping efficiency of 60%, which was very similar to that (57%) obtained in the previous study. Our results show that this simple, open chamber design can be used with satisfactory accuracy under field conditions, provided that simple, standardized procedures are warranted. MenosField studies on soil ammonia (NH3) volatilization are restricted in many countries owing to the high costs commonly demanded for accurate quantification. We assessed the accuracy of a simple, open chamber design to capture NH3 under field conditions, as affected by different chamber placement schemes. Urea-15N was surface applied to lysimeters installed in the spaces between maize rows. Open chambers made from plastic bottles were installed on each lysimeter with variations in i) N rates (3, 8, 13, and 18 g m?2), ii) the height of the chamber above the soil surface (0, 5, and 10 mm), and iii) chamber relocation (static vs. dynamic). Reference lysimeters without chambers were used to measure NH3 losses by 15N-balance. Losses of NH3 -N accounted for more than 50% of the applied N. Relocation of the chambers had no impact on their NH3-trapping efficiencies, proving to be an unnecessary procedure. Variation in the height of the chambers above the soil surface affected the capture of NH3, but the results still maintained high linearity with the NH3 losses quantified by the reference method (R2 > 0.98). When the same placement scheme used in the introductory study describing the chamber was utilized (static and touching the soil surface), we found a trapping efficiency of 60%, which was very similar to that (57%) obtained in the previous study. Our results show that this simple, open chamber design can be used with satisfactory accuracy under field conditions, provided that simpl... Mostrar Tudo |
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Palavras-Chave: |
Ammonia collector; Chamber method; Field sampler; Gas emission; Low cost chamber; Nitrogen cycling. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02482naa a2200325 a 4500
001 2130626
005 2021-03-11
008 2021 bl uuuu u00u1 u #d
022 $a1002-0160
024 7 $ahttps://doi.org/10.1016/S1002-0160(20)60077-7$2DOI
100 1 $aSARKIS, L.
245 $aA simple and easy method to measure ammonia volatilization$baccuracy under field conditions$h[electronic resource]
260 $c2021
520 $aField studies on soil ammonia (NH3) volatilization are restricted in many countries owing to the high costs commonly demanded for accurate quantification. We assessed the accuracy of a simple, open chamber design to capture NH3 under field conditions, as affected by different chamber placement schemes. Urea-15N was surface applied to lysimeters installed in the spaces between maize rows. Open chambers made from plastic bottles were installed on each lysimeter with variations in i) N rates (3, 8, 13, and 18 g m?2), ii) the height of the chamber above the soil surface (0, 5, and 10 mm), and iii) chamber relocation (static vs. dynamic). Reference lysimeters without chambers were used to measure NH3 losses by 15N-balance. Losses of NH3 -N accounted for more than 50% of the applied N. Relocation of the chambers had no impact on their NH3-trapping efficiencies, proving to be an unnecessary procedure. Variation in the height of the chambers above the soil surface affected the capture of NH3, but the results still maintained high linearity with the NH3 losses quantified by the reference method (R2 > 0.98). When the same placement scheme used in the introductory study describing the chamber was utilized (static and touching the soil surface), we found a trapping efficiency of 60%, which was very similar to that (57%) obtained in the previous study. Our results show that this simple, open chamber design can be used with satisfactory accuracy under field conditions, provided that simple, standardized procedures are warranted.
653 $aAmmonia collector
653 $aChamber method
653 $aField sampler
653 $aGas emission
653 $aLow cost chamber
653 $aNitrogen cycling
700 1 $aGUARESHI, R. F.
700 1 $aMARTINS, M. R.
700 1 $aSANTANNA, S. A. C.
700 1 $aZAMAN, M.
700 1 $aJANTALIA, C. P.
700 1 $aALVES, B. J. R.
700 1 $aBODDEY, R. M.
700 1 $aARAUJO, E. da S.
700 1 $aURQUIAGA, S.
773 $tPedosphere$gv. 31, n. 2, p. 255-264, 2021.
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Embrapa Agrobiologia (CNPAB) |
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