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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: |
15/02/2008 |
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Data da última atualização: |
05/05/2011 |
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Autoria: |
KOURESSY, M.; DINGKUHN, M.; VAKSMANN, M.; HEINEMANN, A. B. |
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Afiliação: |
MASMOUTOU KOURESSYA; ALEXANDRE BRYAN HEINEMANN, CNPAF. |
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Título: |
Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Agricultural and Forest Meteorology, Amsterdam, v. 148, n. 3, p. 357-371, Mar. 2008 |
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DOI: |
doi:10.1016/j.agrformet.2007.09.009 |
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Idioma: |
Inglês |
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Conteúdo: |
A simulation experiment was conducted to predict the potential and attainable (water limited) growth and yield of three sorghum genotypes differing in plant type and response to photoperiod for combinations of five sowing dates and three sites on the N?S climatic gradient in Mali, for the period from 1971 to 2004. The models used were SARRA-H equipped with the phenological model Impatience. Onset and end dates of the rainy season were estimated with the simple soil water balance model BIP. The resulting scenarios were evaluated on the basis of (i) escape from drought, (ii) escape of grain development phases from periods of high pest and disease pressure and (iii) the resulting ?safe? periods for sowing. The latter took into account the agronomic advantage associated with early sowing, observed by farmers to minimize weed competition and decreasing soil fertility during the wet season. The results indicated that potentially high yielding and photoperiod insensitive ?modern? cultivars display an advantage only in the north where the rainy season is short. Sensitive response of flowering to photoperiod was essential for more humid environments having a long wet season, resulting in appropriate seasonal timing of flowering and greater flexibility of crop calendars. The methodology is discussed with respect to its suitability for applications in crop breeding, geographic targeting of existing cultivars and studies on the agricultural impact of climate variability and change. |
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Palavras-Chave: |
African sorghum; Simulation modelling. |
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Thesagro: |
Fenologia; Modelo de Simulação; Seca; Sorgo. |
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Thesaurus Nal: |
phenology. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02275naa a2200253 a 4500
001 1216098
005 2011-05-05
008 2008 bl uuuu u00u1 u #d
024 7 $adoi:10.1016/j.agrformet.2007.09.009$2DOI
100 1 $aKOURESSY, M.
245 $aAdaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod.
260 $c2008
520 $aA simulation experiment was conducted to predict the potential and attainable (water limited) growth and yield of three sorghum genotypes differing in plant type and response to photoperiod for combinations of five sowing dates and three sites on the N?S climatic gradient in Mali, for the period from 1971 to 2004. The models used were SARRA-H equipped with the phenological model Impatience. Onset and end dates of the rainy season were estimated with the simple soil water balance model BIP. The resulting scenarios were evaluated on the basis of (i) escape from drought, (ii) escape of grain development phases from periods of high pest and disease pressure and (iii) the resulting ?safe? periods for sowing. The latter took into account the agronomic advantage associated with early sowing, observed by farmers to minimize weed competition and decreasing soil fertility during the wet season. The results indicated that potentially high yielding and photoperiod insensitive ?modern? cultivars display an advantage only in the north where the rainy season is short. Sensitive response of flowering to photoperiod was essential for more humid environments having a long wet season, resulting in appropriate seasonal timing of flowering and greater flexibility of crop calendars. The methodology is discussed with respect to its suitability for applications in crop breeding, geographic targeting of existing cultivars and studies on the agricultural impact of climate variability and change.
650 $aphenology
650 $aFenologia
650 $aModelo de Simulação
650 $aSeca
650 $aSorgo
653 $aAfrican sorghum
653 $aSimulation modelling
700 1 $aDINGKUHN, M.
700 1 $aVAKSMANN, M.
700 1 $aHEINEMANN, A. B.
773 $tAgricultural and Forest Meteorology, Amsterdam$gv. 148, n. 3, p. 357-371, Mar. 2008
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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| Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
19/03/2002 |
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Data da última atualização: |
05/01/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
LEHMANN, J.; CRAVO, M. da S.; ZECH, W. |
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Afiliação: |
Embrapa Amazônia Ocidental. |
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Título: |
Organic matter stabilization in a xanthic ferralsol of the central Amazon as affected by single trees: chemical characterization of density, aggregate, and particle size fractions. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Geoderma, n. 99, p. 147-168, 2001. |
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Idioma: |
Inglês |
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Conteúdo: |
The objectives of this study were (i) to identify SOM pools which are sensitive to land-use changes, (ii) to evaluate the effects of different trees on SOM properties, and (iii) to characterize processes which are relevant to SOM stabilization in xantic ferralsols on the terra firme of the central Amazon. |
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Palavras-Chave: |
Amazonas; Brasil; Chemicophysical properties; Manaus. |
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Thesagro: |
Cobertura do Solo; Densidade Demográfica; Matéria Orgânica; Microrganismo; Propriedade Físico-Química; Solo; Uso da Terra. |
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Thesaurus NAL: |
demography; density; land use; microorganisms; organic matter; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01305naa a2200349 a 4500
001 1669260
005 2015-01-05
008 2001 bl uuuu u00u1 u #d
100 1 $aLEHMANN, J.
245 $aOrganic matter stabilization in a xanthic ferralsol of the central Amazon as affected by single trees$bchemical characterization of density, aggregate, and particle size fractions.
260 $c2001
520 $aThe objectives of this study were (i) to identify SOM pools which are sensitive to land-use changes, (ii) to evaluate the effects of different trees on SOM properties, and (iii) to characterize processes which are relevant to SOM stabilization in xantic ferralsols on the terra firme of the central Amazon.
650 $ademography
650 $adensity
650 $aland use
650 $amicroorganisms
650 $aorganic matter
650 $asoil
650 $aCobertura do Solo
650 $aDensidade Demográfica
650 $aMatéria Orgânica
650 $aMicrorganismo
650 $aPropriedade Físico-Química
650 $aSolo
650 $aUso da Terra
653 $aAmazonas
653 $aBrasil
653 $aChemicophysical properties
653 $aManaus
700 1 $aCRAVO, M. da S.
700 1 $aZECH, W.
773 $tGeoderma$gn. 99, p. 147-168, 2001.
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Embrapa Amazônia Ocidental (CPAA) |
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