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Registro Completo |
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
25/09/2008 |
Data da última atualização: |
04/10/2018 |
Tipo da produção científica: |
Folder/Folheto/Cartilha |
Autoria: |
MILLAR, A. A. |
Afiliação: |
AGUSTIN ANTONIO MILLAR, Consultor CPATSA. |
Título: |
Uso de alguns métodos e resultados de pesquisas de irrigação em programas de pesquisas para as áreas de sequeiro. |
Ano de publicação: |
1977 |
Fonte/Imprenta: |
Petrolina: CPATSA: FAO, 1977. |
Páginas: |
22 p. |
Série: |
(Convenio FAO/BRA/74-008). |
Idioma: |
Português |
Conteúdo: |
Documento de orientação para pesquisadores da Embrapa. Contribuição do Projeto FAO/BRA/74/008 do Programa das Nações Unidas para o Desenvolvimento. 1. Informações sobre resistência a seca; Uso da informação de déficit fenológico de água das culturas; Alguns experimentos básicos e uso da informação. |
Palavras-Chave: |
Arroz de sequeiro; Balanço hidrológico; Cultura resistente a seca; Plant; Plant tissue; Tolerante a seca. |
Thesagro: |
Agricultura; Fenologia; Manejo do Solo; Resistência a Seca; Seca. |
Thesaurus Nal: |
Drought; Soil. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/183902/1/FL-00532.pdf
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Marc: |
LEADER 01114nam a2200289 a 4500 001 1161378 005 2018-10-04 008 1977 bl uuuu u0uu1 u #d 100 1 $aMILLAR, A. A. 245 $aUso de alguns métodos e resultados de pesquisas de irrigação em programas de pesquisas para as áreas de sequeiro. 260 $aPetrolina: CPATSA: FAO$c1977 300 $a22 p. 490 $a(Convenio FAO/BRA/74-008). 520 $aDocumento de orientação para pesquisadores da Embrapa. Contribuição do Projeto FAO/BRA/74/008 do Programa das Nações Unidas para o Desenvolvimento. 1. Informações sobre resistência a seca; Uso da informação de déficit fenológico de água das culturas; Alguns experimentos básicos e uso da informação. 650 $aDrought 650 $aSoil 650 $aAgricultura 650 $aFenologia 650 $aManejo do Solo 650 $aResistência a Seca 650 $aSeca 653 $aArroz de sequeiro 653 $aBalanço hidrológico 653 $aCultura resistente a seca 653 $aPlant 653 $aPlant tissue 653 $aTolerante a seca
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Embrapa Semiárido (CPATSA) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
26/03/2012 |
Data da última atualização: |
25/05/2017 |
Autoria: |
VASCONCELOS, S. S. |
Afiliação: |
STEEL SILVA VASCONCELOS, CPATU. |
Título: |
Moisture and nutrient constraints to ecosystem processes in a forest regrowth stand in Eastern Amazonia, Brazil. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
2006. |
Páginas: |
128 f. |
Idioma: |
Inglês |
Notas: |
Dissertation (Doctor of Philosophy) - University of Florida, Gainesville. |
Conteúdo: |
Changes in land-use and climate are likely to alter resource (e.g., moisture and nutrient) availability in tropical forest soils, but quantitative assessment of the role of resource constraints as regulators of ecosystem processes is rather limited. In this dissertation, moisture and nutrient availability were altered through dry-season irrigation and bi-weekly aboveground litter removal, respectively, to study how these resources control aboveground and belowground ecosystem processes in a forest regrowth stand in the Brazilian Amazon. Moisture availability strongly constrains soil respiration as indicated by the responses of soil carbon dioxide emissions to soil wet-up events and dry-season irrigation. Higher moisture availability in irrigated plots also increased leaf litter decomposition and slightly increased soil nitrous oxide and methane emissions, but did not alter monthly litterfall quantity and quality, and soil nitric oxide emission. Litter removal decreased carbon dioxide emissions and litterfall nitrogen concentration, but had no effects on litterfall quantity, and soil nitrogen oxides and methane emissions. Aboveground net primary productivity was constrained by moisture availability as indicated by the response of wood increment to interannual variation in dry season rainfall and to irrigation, suggesting decreased potential of carbon sequestration from forest regrowth under anticipated scenarios of reduced rainfall in Amazonia. |
Thesagro: |
Ecossistema; Floresta; Umidade. |
Thesaurus NAL: |
Amazonia. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/56447/1/vasconcelos-s.pdf
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Marc: |
LEADER 02013nam a2200181 a 4500 001 1920382 005 2017-05-25 008 2006 bl uuuu m 00u1 u #d 100 1 $aVASCONCELOS, S. S. 245 $aMoisture and nutrient constraints to ecosystem processes in a forest regrowth stand in Eastern Amazonia, Brazil. 260 $a2006.$c2006 300 $a128 f. 500 $aDissertation (Doctor of Philosophy) - University of Florida, Gainesville. 520 $aChanges in land-use and climate are likely to alter resource (e.g., moisture and nutrient) availability in tropical forest soils, but quantitative assessment of the role of resource constraints as regulators of ecosystem processes is rather limited. In this dissertation, moisture and nutrient availability were altered through dry-season irrigation and bi-weekly aboveground litter removal, respectively, to study how these resources control aboveground and belowground ecosystem processes in a forest regrowth stand in the Brazilian Amazon. Moisture availability strongly constrains soil respiration as indicated by the responses of soil carbon dioxide emissions to soil wet-up events and dry-season irrigation. Higher moisture availability in irrigated plots also increased leaf litter decomposition and slightly increased soil nitrous oxide and methane emissions, but did not alter monthly litterfall quantity and quality, and soil nitric oxide emission. Litter removal decreased carbon dioxide emissions and litterfall nitrogen concentration, but had no effects on litterfall quantity, and soil nitrogen oxides and methane emissions. Aboveground net primary productivity was constrained by moisture availability as indicated by the response of wood increment to interannual variation in dry season rainfall and to irrigation, suggesting decreased potential of carbon sequestration from forest regrowth under anticipated scenarios of reduced rainfall in Amazonia. 650 $aAmazonia 650 $aEcossistema 650 $aFloresta 650 $aUmidade
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