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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: |
31/10/1994 |
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Data da última atualização: |
23/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; WRIGHT, R. J.; BALIGAR, V. C.; SOUSA, C. M. R. de. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; R. J. WRIGHT, USDA; V. C. BALIGAR, USDA; C. M. R. DE SOUSA, USDA. |
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Título: |
Characterization of physical and chemical properties of varzea soils of Goias State of Brazil. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, v. 22, n. 15/16, p. 1631-1646, 1991. |
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DOI: |
https://doi.org/10.1080/00103629109368524 |
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Idioma: |
Inglês |
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Conteúdo: |
Brazil has approximately 30 million hectares of lowland areas, known locally as “Varzea,”; distributed throughout the country. Soils in these areas have the potential to support agricultural production, but very little is known about their fertility. The current experiment was undertaken to characterize the chemical and physical properties of representative “Varzea”; soils collected at 0–20, 20–40, 40–60, and 60–80 cm depth intervals from 23 sites in Goias State of Brazil. Organic matter contents averaged 42 g/kg in the surface 20 cm of soil and should make a significant contribution to overall nutrient availability. Soil pH increased slightly with depth from a mean value of 5.2 in the surface 20 cm of soil to a mean value of 5.4 in the 60–80 cm depth interval. Several soils had exchangeable Al values ≥ 1.0 cmol Al/kg, but soil Al saturation was generally less than the 60% level frequently associated with Al toxicity. However, cereal and legume production could benefit from lime addition in many of these soils. Although base saturation was fairly low in some soils, exchangeable Ca and Mg levels were, in general, adequate throughout the profile. Extractable P levels were adequate in most surface soil samples. Extractable K levels in these soils were generally low, and the application of K fertilizers should be beneficial, especially in conjunction with lime addition. The high clay content “Varzea”; soils of the Brazilian lowlands have some drainage problems but generally exhibit favorable chemical properties for crop production when compared to soils of the well‐drained Cerrados. MenosBrazil has approximately 30 million hectares of lowland areas, known locally as “Varzea,”; distributed throughout the country. Soils in these areas have the potential to support agricultural production, but very little is known about their fertility. The current experiment was undertaken to characterize the chemical and physical properties of representative “Varzea”; soils collected at 0–20, 20–40, 40–60, and 60–80 cm depth intervals from 23 sites in Goias State of Brazil. Organic matter contents averaged 42 g/kg in the surface 20 cm of soil and should make a significant contribution to overall nutrient availability. Soil pH increased slightly with depth from a mean value of 5.2 in the surface 20 cm of soil to a mean value of 5.4 in the 60–80 cm depth interval. Several soils had exchangeable Al values ≥ 1.0 cmol Al/kg, but soil Al saturation was generally less than the 60% level frequently associated with Al toxicity. However, cereal and legume production could benefit from lime addition in many of these soils. Although base saturation was fairly low in some soils, exchangeable Ca and Mg levels were, in general, adequate throughout the profile. Extractable P levels were adequate in most surface soil samples. Extractable K levels in these soils were generally low, and the application of K fertilizers should be beneficial, especially in conjunction with lime addition. The high clay content “Varzea”; soils of the Brazilian lowlands have some drainage problems but generally exhi... Mostrar Tudo |
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Palavras-Chave: |
Goiás. |
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Thesagro: |
Características Agronômicas; Física do Solo; Química do Solo; Solo; Várzea. |
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Thesaurus Nal: |
soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02419naa a2200253 a 4500
001 1197892
005 2024-01-23
008 1991 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/00103629109368524$2DOI
100 1 $aFAGERIA, N. K.
245 $aCharacterization of physical and chemical properties of varzea soils of Goias State of Brazil.$h[electronic resource]
260 $c1991
520 $aBrazil has approximately 30 million hectares of lowland areas, known locally as “Varzea,”; distributed throughout the country. Soils in these areas have the potential to support agricultural production, but very little is known about their fertility. The current experiment was undertaken to characterize the chemical and physical properties of representative “Varzea”; soils collected at 0–20, 20–40, 40–60, and 60–80 cm depth intervals from 23 sites in Goias State of Brazil. Organic matter contents averaged 42 g/kg in the surface 20 cm of soil and should make a significant contribution to overall nutrient availability. Soil pH increased slightly with depth from a mean value of 5.2 in the surface 20 cm of soil to a mean value of 5.4 in the 60–80 cm depth interval. Several soils had exchangeable Al values ≥ 1.0 cmol Al/kg, but soil Al saturation was generally less than the 60% level frequently associated with Al toxicity. However, cereal and legume production could benefit from lime addition in many of these soils. Although base saturation was fairly low in some soils, exchangeable Ca and Mg levels were, in general, adequate throughout the profile. Extractable P levels were adequate in most surface soil samples. Extractable K levels in these soils were generally low, and the application of K fertilizers should be beneficial, especially in conjunction with lime addition. The high clay content “Varzea”; soils of the Brazilian lowlands have some drainage problems but generally exhibit favorable chemical properties for crop production when compared to soils of the well‐drained Cerrados.
650 $asoil
650 $aCaracterísticas Agronômicas
650 $aFísica do Solo
650 $aQuímica do Solo
650 $aSolo
650 $aVárzea
653 $aGoiás
700 1 $aWRIGHT, R. J.
700 1 $aBALIGAR, V. C.
700 1 $aSOUSA, C. M. R. de
773 $tCommunications in Soil Science and Plant Analysis$gv. 22, n. 15/16, p. 1631-1646, 1991.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca |
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Origem |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
07/12/1993 |
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Data da última atualização: |
13/04/2012 |
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Autoria: |
POLTRONIERI, M. C.; KATO, M. do S. A. |
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Afiliação: |
MARLI COSTA POLTRONIERI, CPATU; MARIA DO SOCORRO ANDRADE KATO, UEPAE DE BELÉM. |
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Título: |
Ocorrência de pragas na cultura do repolho (Brassica oleracea var. Capitata L.) em Altamira-Pará. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Belém, PA: EMBRAPA-UEPAE de Belém, 1987. |
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Páginas: |
24 p. |
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Descrição Física: |
il. |
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Série: |
(EMBRAPA-UEPAE de Belém. Boletim de pesquisa, 5). |
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Idioma: |
Português |
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Conteúdo: |
Com a expansao do cultivo de hortalicas no municipio de Altamira-PA, a cultura do repolho tem sido intensificada, observando-se assim, as ocorrencias de pragas como um fator a interferir na produtividade e na qualidade do produto olericola. O levantamento foi efetuado atraves de visitas quinzenais a areas de agricultores e as inspecoes iniciaram-se apos a germinacao das sementes ate o fim do ciclo da cultura. O nivel de ocorrencia foi de acordo com SILVA & CARNEIRO (1983). Pelos resultados obtidos observou-se a ocorrencia em maior intensidade de Brevicoryne brassicae (Linne, 1958), Ascia manustes orseis (Godart, 1818) nos periodos de Janeiro a junho, correspondente ao periodo chuvoso. |
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Palavras-Chave: |
Altamira; Brasil; Control; Controle; Disease; Insecticide; Pará; Parah; Pest; Treatment. |
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Thesagro: |
Brassica Oleracea; Doença; Doença de Planta; Inseticida; Praga; Praga de Planta; Repolho; Tratamento. |
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Thesaurus NAL: |
Amazonia; cabbage. |
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Categoria do assunto: |
-- |
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URL: |
https://www.infoteca.cnptia.embrapa.br/infoteca/bitstream/doc/381120/1/BelemBP5.pdf
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Marc: |
LEADER 01682nam a2200385 a 4500
001 1381120
005 2012-04-13
008 1987 bl uuuu u0uu1 u #d
100 1 $aPOLTRONIERI, M. C.
245 $aOcorrência de pragas na cultura do repolho (Brassica oleracea var. Capitata L.) em Altamira-Pará.
260 $aBelém, PA: EMBRAPA-UEPAE de Belém$c1987
300 $a24 p.$cil.
490 $a(EMBRAPA-UEPAE de Belém. Boletim de pesquisa, 5).
520 $aCom a expansao do cultivo de hortalicas no municipio de Altamira-PA, a cultura do repolho tem sido intensificada, observando-se assim, as ocorrencias de pragas como um fator a interferir na produtividade e na qualidade do produto olericola. O levantamento foi efetuado atraves de visitas quinzenais a areas de agricultores e as inspecoes iniciaram-se apos a germinacao das sementes ate o fim do ciclo da cultura. O nivel de ocorrencia foi de acordo com SILVA & CARNEIRO (1983). Pelos resultados obtidos observou-se a ocorrencia em maior intensidade de Brevicoryne brassicae (Linne, 1958), Ascia manustes orseis (Godart, 1818) nos periodos de Janeiro a junho, correspondente ao periodo chuvoso.
650 $aAmazonia
650 $acabbage
650 $aBrassica Oleracea
650 $aDoença
650 $aDoença de Planta
650 $aInseticida
650 $aPraga
650 $aPraga de Planta
650 $aRepolho
650 $aTratamento
653 $aAltamira
653 $aBrasil
653 $aControl
653 $aControle
653 $aDisease
653 $aInsecticide
653 $aPará
653 $aParah
653 $aPest
653 $aTreatment
700 1 $aKATO, M. do S. A.
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Embrapa Amazônia Oriental (CPATU) |
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