|
|
|
| Registros recuperados: 17 | |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| AVILA NETTO, J.; AZEVEDO, P. V.; SILVA, B. B. da S.; SOARES, J. M.; TEIXEIRA, A. H. de C.. |
| O trabalho objetivou a estimativa das necessidades hidricas da videira (Vitis vinifera L.), cv. Italia, sob as condicoes edafoclimaticas da regiao do submedio Sao Francisco. A parte experimental foi conduzida no campo experimental de Bebedouro da Embrapa Semi-Arido, no municipio de Petrolina, PE, durante o periodo de maio a agosto de 1996. A evapotranspiracao da cultura foi determinada pelo metodo do balanco hidrico no solo, e a evapotranspiracao de referencia foi estimada pelo metodo de Penman, visando avaliar o comportamento do coeficiente de cultura ao longo do ciclo da cultura. O parreiral, com cinco anos de idade, foi conduzido em sistema de latada a 2 m acima da superficie do solo, num espacamento de 4 m x 2 m e irrigado diariamente por gotejamento.... |
| Tipo: Artigo de periódico |
Palavras-chave: Relacao planta-agua; Consumo hidrico; Plant water relations; Trickle irrigation; Water use.; Balanço Hídrico; Evapotranspiração; Irrigação por Gotejamento; Uva; Vitis Vinifera.; Grapes; Evapotranspiration; Water balance.. |
| Ano: 2000 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/134064 |
| |
|
|
| DUNISCH, O.; BAUCH, J.; GASPAROTTO, L.; AZEVEDO, C. P. de; NEVES, E.. |
| Study on the important species (mogno, andiroba, cedro) for high quality wood production. During six years of experiments the influence of light, of the mineral element supply of the soil, and of the water supply on the growth dynamics of the trees was studied in a monoculture and an enrichment plantation installed at the Research Station of the Embrapa Amazonia Ocidental (Manaus-AM-Brasil). It was that the site preparation and the plantation management had a significant influence on the light conditions, the nutrient supply, and the water supply of the plantation. In comparison in the enrichment plantation the photoactive radiation (PAR) was strongly reduced, whereas the nutrient supply of the soil was better balanced and the seasonal oscillation of the... |
| Tipo: Parte de livro |
Palavras-chave: Agrofloresta; Cedrela odorota; Brasil; Amazonas; Manaus; Multiple croping; Growth; Plant water relations; Agrossilvicultura; Andiroba; Carapa Guianensis; Cedro; Conservação do Solo; Crescimento; Cultivo Multiplo; Essência Florestal; Floresta Tropical Úmida; Insolação; Mogno; Relação Água-Planta; Sombreamento; Swietenia Macrophylla; Agroforestry; Forest trees; Shade; Soil conservation; Tropical rain forests. |
| Ano: 2000 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/670008 |
| |
|
| |
|
| |
|
|
| 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 |
| |
|
| |
|
| |
|
|
| RENCK, A.; LEHMANN, J.; TEIXEIRA, W.; HUWE, B.; ZECH, W.. |
| Studies on the leaching losses of applied 15N tagged fertilizer during one rainy season, in the central Amazonia (Manaus-AM, Brasil). TDR, tensiometers and suction cups were installed under cupuacu, pupunha (peach palm), castanha-do-Para (Brazil nut) and urucu (annatto) in a mult-strata agroforestry system. The trees affected leaching losses of applied N to a different extend, and pupunha and urucu were better able to do so than the other investigated species. However, losses of applied fertilizer N can not entirely be prevented considering the extremely rapid soil water percolation under the studied humid tropical conditions and the highly permeable soil. |
| Tipo: Parte de livro |
Palavras-chave: Urucu; Theobrama grandiflorum; Brasil; Amazonas; Manaus; Plant water relations; Cover plants.; Água do Solo; Bactris Gasipaes; Bixa Orellana; Bertholletia Excelsa; Castanha do Para; Cobertura do Solo; Cupuaçu; Conservação do Solo; Floresta Tropical Úmida; Física do Solo; Lixiviação; Leguminosa; Nitrogênio; Nutriente; Pupunha; Pueraria Phaseoloides; Relação Água-Planta; Tensiômetro.; Legumes; Leaching; Nutrients; Tropical rain forests.; Soil conservation; Soil fertility; Soil water. |
| Ano: 2000 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/670041 |
| |
|
| |
| Registros recuperados: 17 | |
|
|
|
