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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
13/04/2000 |
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Data da última atualização: |
25/01/2007 |
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Autoria: |
TUCCI, C. A. F.; LIMA, E. J. de M.; HARA, F. A. dos S. |
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Afiliação: |
UA. |
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Título: |
Comparação de fontes de nitrogênio sobre o comportamento de plântulas de milho (Zea mays L.) em solo de várzea. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Revista da Universidade do Amazonas. Serie: Ciencias Agrarias, Manaus, v.6, n.1, p.103-113, jan./jun. 1997. |
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Idioma: |
Português |
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Conteúdo: |
Tem como objetivo comparar fontes de nitrogenio para a cultura do milho em solo de varzea do Rio Amazonas. O delineamento experimental utilizado foi o de blocos casualizados. Os tratamentos foram ureia, nitrato de potassio, sulfato de amonio, nitrato de amonio e ausencia de N (testemunha). As fontes de N foram aplicadas em tres vezes em dose equivalente a 50 kg N /ha em cada aplicacao. No cultivo de milho foi utilizada a Br-5110. Nao se observou diferenca entre as fontes em relacao aos parametros estudados. Para as caracteristicas altura de planta, diametro do colmo, materia seca da parte aerea e do sistema radicular, teor e conteudo de nitrogenio, a aplicacao de N superou a sua ausencia. Para teor de potassio na parte aerea, observou-se que as fontes amoniacais diminuiram a absorcao de potassio. |
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Palavras-Chave: |
Adubo nitrogenado; Amazonas; Brasil; Fertilizers application; Flood plains. |
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Thesagro: |
Adubação; Milho; Plântula; Várzea; Zea Mays. |
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Thesaurus Nal: |
nitrogen fertilizers; seedlings. |
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Categoria do assunto: |
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Marc: |
LEADER 01663naa a2200289 a 4500
001 1668757
005 2007-01-25
008 1997 bl uuuu u00u1 u #d
100 1 $aTUCCI, C. A. F.
245 $aComparação de fontes de nitrogênio sobre o comportamento de plântulas de milho (Zea mays L.) em solo de várzea.
260 $c1997
520 $aTem como objetivo comparar fontes de nitrogenio para a cultura do milho em solo de varzea do Rio Amazonas. O delineamento experimental utilizado foi o de blocos casualizados. Os tratamentos foram ureia, nitrato de potassio, sulfato de amonio, nitrato de amonio e ausencia de N (testemunha). As fontes de N foram aplicadas em tres vezes em dose equivalente a 50 kg N /ha em cada aplicacao. No cultivo de milho foi utilizada a Br-5110. Nao se observou diferenca entre as fontes em relacao aos parametros estudados. Para as caracteristicas altura de planta, diametro do colmo, materia seca da parte aerea e do sistema radicular, teor e conteudo de nitrogenio, a aplicacao de N superou a sua ausencia. Para teor de potassio na parte aerea, observou-se que as fontes amoniacais diminuiram a absorcao de potassio.
650 $anitrogen fertilizers
650 $aseedlings
650 $aAdubação
650 $aMilho
650 $aPlântula
650 $aVárzea
650 $aZea Mays
653 $aAdubo nitrogenado
653 $aAmazonas
653 $aBrasil
653 $aFertilizers application
653 $aFlood plains
700 1 $aLIMA, E. J. de M.
700 1 $aHARA, F. A. dos S.
773 $tRevista da Universidade do Amazonas. Serie: Ciencias Agrarias, Manaus$gv.6, n.1, p.103-113, jan./jun. 1997.
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Embrapa Amazônia Ocidental (CPAA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
30/11/2005 |
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Data da última atualização: |
05/10/2007 |
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Autoria: |
MESQUITA, C. M.; HANNA, M. A.; COSTA, N. P. |
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Título: |
Self-propelled prototype soybean harvester. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Transactions of the Asae, St. Joseph, v. 48, n. 4, p. 1301-1310, 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
A four-row self-propelled prototype of a new and simplified concept soybean harvester was built and fied tested as part of a major project acrried out for several years. The prototype threshes soybeans from standing, uncut plants using impact energy provided by plastic fingers mounted on opposite rotating shafts, and uses a pneumatic system for capturing, separating, cleaning, and transporting the beans. Compared to ten different combines from each of three brands with conventional tangentially fed threshing systems, and ten different combines from a brand with an axial-flow threshing system, the prototype-harvested seeds were significantly better with respect to broken/split beans and seed coat damage than all the combines with tangentially fed threshing systems. The amounts of material-other-than-grain (MOG) in the sample harvested with the prototype were significantly less than for all conventional brands. The seed vigor of the sample from the prototype was significantly better than those from one of the combine brands with a tangentially fed threshing system. Invisible mechanical damage, germination, and grain field losses were not statistically different between the prototype and all combine brands evaluated. The overall results confirmed the better quality of the collected beans, including that obtained with previous versions of the prototype. It also showed that the harvesting module, initially designed for small and medium-size farms, was adaptable to a sel-propelled unit and therefore to larger-scale operations. MenosA four-row self-propelled prototype of a new and simplified concept soybean harvester was built and fied tested as part of a major project acrried out for several years. The prototype threshes soybeans from standing, uncut plants using impact energy provided by plastic fingers mounted on opposite rotating shafts, and uses a pneumatic system for capturing, separating, cleaning, and transporting the beans. Compared to ten different combines from each of three brands with conventional tangentially fed threshing systems, and ten different combines from a brand with an axial-flow threshing system, the prototype-harvested seeds were significantly better with respect to broken/split beans and seed coat damage than all the combines with tangentially fed threshing systems. The amounts of material-other-than-grain (MOG) in the sample harvested with the prototype were significantly less than for all conventional brands. The seed vigor of the sample from the prototype was significantly better than those from one of the combine brands with a tangentially fed threshing system. Invisible mechanical damage, germination, and grain field losses were not statistically different between the prototype and all combine brands evaluated. The overall results confirmed the better quality of the collected beans, including that obtained with previous versions of the prototype. It also showed that the harvesting module, initially designed for small and medium-size farms, was adaptable to a sel-propelled... Mostrar Tudo |
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Thesagro: |
Colheita; Dano Mecânico; Soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02020naa a2200181 a 4500
001 1468604
005 2007-10-05
008 2005 bl --- 0-- u #d
100 1 $aMESQUITA, C. M.
245 $aSelf-propelled prototype soybean harvester.
260 $c2005
520 $aA four-row self-propelled prototype of a new and simplified concept soybean harvester was built and fied tested as part of a major project acrried out for several years. The prototype threshes soybeans from standing, uncut plants using impact energy provided by plastic fingers mounted on opposite rotating shafts, and uses a pneumatic system for capturing, separating, cleaning, and transporting the beans. Compared to ten different combines from each of three brands with conventional tangentially fed threshing systems, and ten different combines from a brand with an axial-flow threshing system, the prototype-harvested seeds were significantly better with respect to broken/split beans and seed coat damage than all the combines with tangentially fed threshing systems. The amounts of material-other-than-grain (MOG) in the sample harvested with the prototype were significantly less than for all conventional brands. The seed vigor of the sample from the prototype was significantly better than those from one of the combine brands with a tangentially fed threshing system. Invisible mechanical damage, germination, and grain field losses were not statistically different between the prototype and all combine brands evaluated. The overall results confirmed the better quality of the collected beans, including that obtained with previous versions of the prototype. It also showed that the harvesting module, initially designed for small and medium-size farms, was adaptable to a sel-propelled unit and therefore to larger-scale operations.
650 $aColheita
650 $aDano Mecânico
650 $aSoja
700 1 $aHANNA, M. A.
700 1 $aCOSTA, N. P.
773 $tTransactions of the Asae, St. Joseph$gv. 48, n. 4, p. 1301-1310, 2005.
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