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Registros recuperados: 12
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Analysis of Hydraulic Conductance Components in Field Grown, Mature Sweet Cherry Trees Chilean J. Agric. Res.
Oyarzún,Ricardo; Stöckle,Claudio; Whiting,Matthew.
As a necessary step towards understanding soil water extraction and plant water relationships, the components of hydraulic conductance (K) of mature sweet cherry (Prunus avium L.) trees were evaluated in situ based on a Ohm´s law analog method. In June 2004, K was determined for 10-yr-old ‘Bing’/‘Gisela® 5’ trees, from simultaneous measurements of whole canopy gas exchange and leaf (sunlit and shaded) and stem water potentials (Ψ). Leaf water potential of sunlit leaves was lower than shaded leaves, reaching minimum values of ca. -2.3 MPa around 14:00 h (solar time). Average total hydraulic conductance was 60 ± 6 mmol s-1 MPa-1, presenting a slight decreasing trend as the season progressed. The analysis of tree K components showed that it was...
Tipo: Journal article Palavras-chave: Plant water relations; Transpiration; Water potential; Whole-canopy gas exchange.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100006
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Caracterizacao de varzeas na regiao dos cerrados. Infoteca-e
RASSINI, J. B.; REIS, A. E. G. dos; MACEDO, J.; LEITE, J. C..
A ocorrencia de varzeas na regiao dos Cerrados e grande, com cerca de 12 milhoes de hectares em sua maioria ainda nao utilizadas, devido, principalmente, a baixa disponibilidade de informacao a respeito do sistema solo-agua-planta. O trabalho busca fornecer uma caracterizao e a distribuicao desse tipo de ecossistema nas principais bacias hidrograficas dos Cerrados, apresentando resultados referentes a vegetacao e aos tipos de solo predominantes nessas formacoes.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Flood plains; Plant soil relations; Plant water relations; Characterization; Wetland.; Bacia Hidrográfica; Cerrado; Ecossistema; Relação Solo-Planta; Relação Água-Planta; Várzea.; Ecosystems; Soil..
Ano: 1984 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/547230
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Characterizing and understanding rainfed environments: proceedings of the International Workshop on Characterizing and Understanding Rainfed Environments, 5-9 December 1999, Bali, Indonesia International Rice Research Institute
International Rice Research Institute.; International Workshop on Characterizing and Understanding Rainfed Environments (1999: Bali, Indonesia)..
ix, 488 p. : ill., col. maps
Tipo: Book Palavras-chave: Rainfed rice; Ecology; Plant water relations.
Ano: 1999 URL: http://hdl.handle.net/123456789/286
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Drought resistance in crops with emphasis on rice: [proceedings of the symposium on Principles and Methods of Crop Improvement for Drought Resistance in Crops with Emphasis on Rice]. International Rice Research Institute
Symposium on Principles and Methods of Crop Improvement for Drought Resistance in Crops with Emphasis on Rice (1981 : IRRI).; International Rice Research Institute..
414 p. : ill.
Tipo: Book Palavras-chave: Maps; Drought resistance; Plant water relations; Plant breeding.
Ano: 1982 URL: http://hdl.handle.net/123456789/297
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Genetic improvement of rice for water-limited environments International Rice Research Institute
International Rice Research Institute; Rockefeller Foundation; Ito, O.; O'Toole, J.; Hardy, B..
vi, 353 p. : ill.
Tipo: Book Palavras-chave: Plant water relations; Molecular genetics; Transgenic rice; Conferences.
Ano: 1999 URL: http://hdl.handle.net/123456789/308
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Investigations on tree species suitable for the recultivation of degraded land areas in Central Amazonia. Infoteca-e
SHIFT PROJECT ENV 42-2..
In cooperation with the Embrapa Amazonia Ocidental in Manaus (Amazonas, Brasil) and three German projects (ENV 23, ENV 45, ENV 52), in the year 2000 we especially investigated (1) photosynthesis and carbohydrate allocation and (2) the plant-water relationships of the selected tree species. Special emphasis was given to the three species of the family Meliaceae. Comparative experiments have been done for monoculture, polycultures, enrichment cultures, and primary forests.
Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Recuperaco do solo; Agrofloresta; Especie florestal; Fotossinte; Brasil; Amazonas; Tropical rain forest; Reclamation; Sustainability; Species; Plant water relations; Andiroba; Árvore Florestal; Carapa Guianensis; Carboidrato; Cedrela Odorata; Cedro; Cultivo Multiplo; Desenvolvimento Sustentável; Deterioração do Solo; Floresta Tropical Úmida; Mogno; Relação Água-Planta; Swietenia Macrophylla; Uso da Terra; Agroforestry; Carbohydrates; Environmental degradation; Forest trees; Land use; Multiple cropping; Photosynthesis.
Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/670721
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Investigations on tree species suitable for the recultivation of degraded land areas in Central Amazonia. Infoteca-e
SHIFT PROJECT ENV 42/2 (Curitiba-PR)..
Project activities in 1999, in Manaus-AM(Brasil): water supply of the trees, carbohydrate supply of the trees, seed provenances, wood quality. After five years of experiments the investigations (1) the biomass production and nutrition of five plantation grown tree species, (2) the comparison of nutrient fluxes and grwoth dynamics of Carapa guianensis grown in monoculture and enrichment plantations, and (3) the study of cambial growth dynamics of three selected Meliaceae were terminated. In 1999 the data evaluation was carried out.
Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Cedrela odorota; Brasil; Amazonas; Manaus; Tropical rain forest; Reclamation; Sustainability; Species; Plant water relations; Seed; Carbhoydrate content; Agrossilvicultura; Andiroba; Bertholletia Excelsa; Carapa Guianensis; Carboidrato; Castanha do Para; Cultivo Multiplo; Cumaru; Desenvolvimento Sustentável; Dipteryx Odorata; Essência Florestal; Floresta Tropical Úmida; Hymenaea Courbaril; Jatobá; Madeira; Mogno; Recuperação do Solo; Relação Água-Planta; Semente; Swietenia Macrophylla; Agroforestry; Forest trees; Multiple cropping; Soil; Wood.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/669636
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Physiological responses of maize and cowpea to intercropping PAB
LIMA FILHO,JOSÉ MOACIR PINHEIRO.
The effect of intercropping on plant water status, gas exchange and productivity of maize (Zea mays L.) cv. Centralmex, and cowpea (Vigna unguiculata L. (Walp)) cv. Pitiuba were evaluated under semi-arid conditions at the Embrapa-Centro de Pesquisa Agropecuária do Trópico Semi-Árido (CPATSA) at Petrolina, PE, Brazil. The treatments were: maize and cowpea as sole crops, at a population of 40,000 plants ha-1, and intercropped at a population of 20,000 plants ha-1. The results obtained in this paper appear to be related to the degree of competition experienced by the components, mainly for water and light. Maize intercropped had higher values of leaf water potential, stomatal conductance, transpiration and photosynthesis than as sole crop. Intercropped cowpea...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant soil relations; Plant water relations; Gas exchange; Cropping systems.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000000500008
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Rainfed lowland rice: agricultural research for high-risk environments. International Rice Research Institute
International Symposium of the Rainfed Lowland Rice Research Consortium (1993 : Java, Indonesia).; International Rice Research Institute.; Ingram, K.T..
248 p. : ill.
Tipo: Book Palavras-chave: Rainfed lowland rice; Plant water relations.
Ano: 1995 URL: http://hdl.handle.net/123456789/651
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Rice roots: nutrient and water use : selected papers from the International Rice Research Conference. International Rice Research Institute
International Rice Research Conference (1992 : IRRI).; International Rice Research Institute.; Kirk, G.J.D..
86 p. : ill.
Tipo: Book Palavras-chave: Roots; Plant water relations; Nutrients; Water use.
Ano: 1994 URL: http://hdl.handle.net/123456789/884
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Water and element supply of the plantation systems and their significance for the xylem production of Swietenia macrophylla and Carapa guianensis. Infoteca-e
DUNISCH, O.; BAUCH, J.; GASPAROTTO, L.; NEVES, E.; AZEVEDO, C. de; LIMA, R. de; MORAIS, R. de.
In this study the influence of the water and K supply on growth and wood formation of plantation grown S. macrophylla and C. guianensis is investigated (Manaus-AM-Brasil).
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Brasil; Amazonas; Manaus; Plant water relations; Potash fertilizers; Andiroba; Carapa Guianensis; Mogno; Potássio; Relação Água-Planta; Swietenia Macrophylla.
Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/669644
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Water management in irrigated rice: coping with water scarcity International Rice Research Institute
Bouman, B.A.M.; Lampayan, R.M.; Tuong, T.P..
iv, 54 p. : ill.
Tipo: Technical Report Palavras-chave: Water management; Irrigated rice; Water supply; Irrigated systems; Plant water relations; Aerobic rice; Ecosystems.
Ano: 2007 URL: http://hdl.handle.net/10269/266
Registros recuperados: 12
Primeira ... 1 ... Última
 

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