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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
10/01/2010 |
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Data da última atualização: |
09/09/2013 |
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Autoria: |
STENGEL, P.; DOUGLAS, J. T.; GUÉRIF, J.; GOSS, M. J.; MONNIER, G.; CANNELL, R. Q. |
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Título: |
Factors influencing the variation of some properties of soils in relation to their suitability for direct drilling. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Soil & Tillage Research, Amsterdam, v. 4, n. 1, p. 35-53, 1984. |
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Idioma: |
Inglês |
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Conteúdo: |
Soils from fifteen field experiments in the United Kingdom and one in France that compared direct drilling with mouldboard ploughing were examined with respect to their composition and physical properties. Indices of the stability and shrinkage of soil aggregates were obtained by measurement and an index of compactability was derived from an established relationship. It was hypothesized that these properties were possible determinants of soil responses to zero-tillage. Aggregate stability and shrinkage were correlated with organic carbon and clay content, respectively. Organic matter contents were greater at the surface of direct-drilled soils than in the complete topsoil layer after direct drilling or ploughing. In some cases the increase in organic matter significantly improved the physical properties of the soils. The three indices, of stability, shrinkage and compactability, were each ranked in high intermediate or low groups, and the soils classified according to their ratings in these groups. The resulting classification broadly agreed with a previous one of soil suitability for sequential direct drilling mainly based on experimental agronomy. |
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Thesagro: |
Plantio Direto. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01744naa a2200193 a 4500
001 1835729
005 2013-09-09
008 1984 bl --- 0-- u #d
100 1 $aSTENGEL, P.
245 $aFactors influencing the variation of some properties of soils in relation to their suitability for direct drilling.
260 $c1984
520 $aSoils from fifteen field experiments in the United Kingdom and one in France that compared direct drilling with mouldboard ploughing were examined with respect to their composition and physical properties. Indices of the stability and shrinkage of soil aggregates were obtained by measurement and an index of compactability was derived from an established relationship. It was hypothesized that these properties were possible determinants of soil responses to zero-tillage. Aggregate stability and shrinkage were correlated with organic carbon and clay content, respectively. Organic matter contents were greater at the surface of direct-drilled soils than in the complete topsoil layer after direct drilling or ploughing. In some cases the increase in organic matter significantly improved the physical properties of the soils. The three indices, of stability, shrinkage and compactability, were each ranked in high intermediate or low groups, and the soils classified according to their ratings in these groups. The resulting classification broadly agreed with a previous one of soil suitability for sequential direct drilling mainly based on experimental agronomy.
650 $aPlantio Direto
700 1 $aDOUGLAS, J. T.
700 1 $aGUÉRIF, J.
700 1 $aGOSS, M. J.
700 1 $aMONNIER, G.
700 1 $aCANNELL, R. Q.
773 $tSoil & Tillage Research, Amsterdam$gv. 4, n. 1, p. 35-53, 1984.
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Embrapa Trigo (CNPT) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria Tropical. |
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Data corrente: |
31/03/1998 |
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Data da última atualização: |
11/05/2010 |
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Autoria: |
MIRANDA, F. R. de; OLIVEIRA, V. H. de; SANTOS, F. J. de S. |
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Afiliação: |
CNPAT. |
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Título: |
Desenvolvimento de plantas jovens de coqueiro anão (Cocos nucifera L.) submetidas a diferentes regimes de irrigação. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Fortaleza: Embrapa Agroindustria Tropical, 1998. |
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Páginas: |
5 p. |
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Série: |
(Embrapa Agroindustria Tropical. Pesquisa em Andamento, 23) |
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Idioma: |
Português |
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Conteúdo: |
O deficit hidrico no solo, causado pela ma distribuicao das precipitacoes ao longo do ano, constitui um dos principais fatores que contribuem para a baixa produtividade do coqueiro nas diferentes regioes onde e cultivado. Devido a isto, tem aumentado significativamente nos ultimos anos o uso da irrigacao nessa cultura, sobretudo nos plantios do coqueiro anao, cujos frutos se destinam ao crescente mercado de agua de coco, "in natura". |
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Palavras-Chave: |
Brasil; Ceara; Coco anao; Coconut; Cocus nucifera; Coqueiro; Coqueiro anao; Plantas jovens; Precocity; Variety. |
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Thesagro: |
Água de Coco; Coco; Cocos Nucifera; Irrigação; Planta; Precocidade Vegetal; Produtividade; Solo; Variedade. |
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Thesaurus NAL: |
irrigation. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPAT-2010/5373/1/Pa-023.pdf
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Marc: |
LEADER 01514nam a2200397 a 4500
001 1422603
005 2010-05-11
008 1998 bl uuuu u0uu1 u #d
100 1 $aMIRANDA, F. R. de
245 $aDesenvolvimento de plantas jovens de coqueiro anão (Cocos nucifera L.) submetidas a diferentes regimes de irrigação.
260 $aFortaleza: Embrapa Agroindustria Tropical$c1998
300 $a5 p.
490 $a(Embrapa Agroindustria Tropical. Pesquisa em Andamento, 23)
520 $aO deficit hidrico no solo, causado pela ma distribuicao das precipitacoes ao longo do ano, constitui um dos principais fatores que contribuem para a baixa produtividade do coqueiro nas diferentes regioes onde e cultivado. Devido a isto, tem aumentado significativamente nos ultimos anos o uso da irrigacao nessa cultura, sobretudo nos plantios do coqueiro anao, cujos frutos se destinam ao crescente mercado de agua de coco, "in natura".
650 $airrigation
650 $aÁgua de Coco
650 $aCoco
650 $aCocos Nucifera
650 $aIrrigação
650 $aPlanta
650 $aPrecocidade Vegetal
650 $aProdutividade
650 $aSolo
650 $aVariedade
653 $aBrasil
653 $aCeara
653 $aCoco anao
653 $aCoconut
653 $aCocus nucifera
653 $aCoqueiro
653 $aCoqueiro anao
653 $aPlantas jovens
653 $aPrecocity
653 $aVariety
700 1 $aOLIVEIRA, V. H. de
700 1 $aSANTOS, F. J. de S.
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Embrapa Agroindústria Tropical (CNPAT) |
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