Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 137
Primeira ... 1234567 ... Última
Imagem não selecionada

Imprime registro no formato completo
Agronomic performance of maize hybrids under supplemental irrigation depths AGRIAMBI
Ben,Luis H. B.; Peiter,Marcia X.; Robaina,Adroaldo D.; Kirchner,Jardel H.; Mezzomo,Wellington; Pimenta,Bruna D..
ABSTRACT The choice of a maize hybrid, considering the technology level and irrigation management, contributes to the improvement of the plant productivity and water use efficiency (WUE). Thus, the objective of this study was to evaluate the effects of irrigation depths on production components, grain yield, technical efficiency, and WUE in maize hybrids. The experiment was conducted in Santiago, RS state, Brazil, in the 2015/2016 and 2016/2017 crop seasons, using a randomized block design in factorial scheme, consisting of five irrigation depths (0, 50, 75, 100 and 125% of crop evapotranspiration - ETc) and four maize hybrids in crop season I (2015/2016), and six maize hybrids in crop season II (2016/2017). The number of ears per plant, number of grains...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water deficit; Zea mays L.; Water use efficiency; Genotypes; Grain yield.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000700524
Imagem não selecionada

Imprime registro no formato completo
Agronomic performance of sugarcane families in response to water stress Bragantia
Silva,Marcelo de Almeida; Soares,Rogério Augusto Bremm; Landell,Marcos Guimarães de Andrade; Campana,Mário Pércio.
Water deficit is one of the major factors limiting the production of sugarcane, especially in areas where there is a prolonged period of water deficiency, such as the West Central Brazilian region. One way to overcome this problem is to cultivate resistant or tolerant varieties. An experiment was set up at the Jalles Machado Sugar Mill, located near Goianésia, Goiás State, Brazil, to evaluate agronomic performance of several sugarcane families. A comparative analysis was carried out among the families under two irrigation regimes, one under regular environmental conditions and another under monthly irrigations during the period of water deficiency. Evaluated families consisted of 25 progenies planted in a factorial design with three replications with 20...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Selection; Water deficit; Irrigation; Brix.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052008000300014
Imagem não selecionada

Imprime registro no formato completo
Approximate Entropy as a measure of complexity in sap flow temporal dynamics of two tropical tree species under water deficit Anais da ABC (AABC)
Souza,Gustavo M.; Ribeiro,Rafael V.; Santos,Mauro G.; Ribeiro,Henrique L.; Oliveira,Ricardo F..
Approximate Entropy (ApEn), a model-independent statistics to quantify serial irregularities, was used to evaluate changes in sap flow temporal dynamics of two tropical species of trees subjected to water deficit. Water deficit induced a decrease in sap flow of G. ulmifolia, whereas C. legalis held stable their sap flow levels. Slight increases in time series complexity were observed in both species under drought condition. This study showed that ApEn could be used as a helpful tool to assess slight changes in temporal dynamics of physiological data, and to uncover some patterns of plant physiological responses to environmental stimuli.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Approximate Entropy; Complexity; Sap flow; Time series analysis; Tropical ecophysiology; Water deficit.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000300015
Imagem não selecionada

Imprime registro no formato completo
Aroma composition of Tempranillo grapes as affected by iron deficiency chlorosis and vine water status Scientia Agricola
Sánchez,Ramón; García,María-Rosa González; Vilanova,Mar; Rodríguez-Nogales,José-Manuel; Martín,Pedro.
ABSTRACT: Water deficit and iron nutritional deficiency (iron chlorosis) are frequent environmental stresses affecting grapevine production in the Mediterranean region. The objectives of this work were (i) to study the combined effects of both stresses on aromatic profile of Tempranillo grapes, occurring simultaneously in the vineyard, and (ii) to evaluate the viability of foliar chlorophyll content at veraison (Chl) to early assess aromatic quality potential of grapes in those conditions. Twenty non-irrigated vineyard subzones (10 m × 10 m each), affected and non-affected by iron chlorosis, were monitored in Ribera del Duero Appellation of Origin (North-Central Spain) during two consecutive seasons. Factorial ANOVA was performed to study the effects of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vitis vinifera L.; Chlorophyll; Quality; Volatile composition; Water deficit.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000200601
Imagem não selecionada

Imprime registro no formato completo
Asymmetrical leaves induced by water deficit show asymmetric photosynthesis in common bean Braz. J. Plant Physiol.
Souza,Gustavo Maia; Viana,Juliana de Oliveira Fernandes; Oliveira,Ricardo Ferraz de.
In this study we tested the hypothesis that leaf asymmetric growth induced by water deficit in common bean (Phaseolus vulgaris L.) might be correlated with different net photosynthesis rates between the two opposed leaflets (right and left) considering a bilateral symmetric plane. In order to induce developmental instability, the drought-sensitive common bean genotype "Jalo Precoce" was subjected to periods of suspended irrigation during its vegetative growth. Developmental instability was evaluated by measurements of leaflets asymmetry, and the effects of drought on gas exchanges were taken in both symmetrical leaflets (right and left) in relation to the central leaflet. Water deficit induced an increase of 80 % in leaf asymmetry. Net photosynthesis of P....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Developmental instability; Leaf symmetry; Water deficit.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000200005
Imagem não selecionada

Imprime registro no formato completo
Atividade de enzimas antioxidantes em linhagem de milho (Zea mays L.) submetidas a déficit hídrico. Repositório Alice
VIANA, M.C.M.; QUEIROZ, C.G. de S.; SOUZA, I. R. P. de; DURAES, F. O. M..
2001
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Milho; Deficit hidrico; Enzima; Fluorescimento; Zea mays; Maize; Water deficit; Enzyme.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/485140
Imagem não selecionada

Imprime registro no formato completo
Bell pepper cultivation under different irrigation strategies in soil with and without mulching Horticultura Brasileira
Rocha,Pablo A; Santos,Marcelo R; Donato,Sérgio LR; Brito,Cleiton FB; Ávila,Joseani S.
ABSTRACT This study aimed to evaluate productive, physiological and phytotechnical characteristics of bell pepper under different irrigation strategies, in soil with mulch (polyethylene film, black on bottom, white on top) and without mulching. The experimental design was of randomized blocks with four replicates, arranged in split plot scheme; plots consisted of treatments with and without mulching, and in the subplots ten irrigation strategies = 1) 125% of crop evapotranspiration (ETc); 2) 100% of ETc; 3) 75% of ETc; 4) 50% of ETc, both in vegetative phase (FI) and production phase (FII); 5) regulated deficit irrigation (RDI); with 50% of ETc in FI and 100% of ETc in FII; 6) RDI with 100% of ETc in FI and 50% of ETc in FII; 7) RDI with 75% of ETc in FI...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Capsicum annuum; Water deficit; Mulching; Water-use efficiency.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000400453
Imagem não selecionada

Imprime registro no formato completo
Calibration and testing of an agrometeorological model for the estimation of soybean yields in different Brazilian regions Agronomy
Monteiro, Leonardo Amaral; Universidade de São Paulo; Sentelhas, Paulo Cesar; Universidade de São Paulo.
This study was designed to calibrate and test an agrometeorological model over 18 growing seasons in three soybean production areas in Brazil: Passo Fundo (Rio Grande do Sul State), Londrina (Paraná State), and Dourados (Mato Grosso do Sul State).The soybean potential yield (Yp) was determined by two methods: estimated using the FAO Agroecological Zone Model or based on the maximum yield published by the Brazilian Institute of Geography and Statistics (IBGE), increased by 10, 20 and 30%.The estimate of actual yield (Ya) was calculated by correcting Yp for the relative water deficit at different growth stages. The results showed that the best performance was obtained when the Yp was represented by the maximum yield increased by a certain percentage. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.01.05.00-0 Glycine max; Potential yield; Actual yield; Water deficit; Simulation models Agrometeorologia.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17485
Imagem não selecionada

Imprime registro no formato completo
Climatic characteristics of the 2010-2016 drought in the semiarid Northeast Brazil region Anais da ABC (AABC)
MARENGO,JOSÉ A.; ALVES,LINCOLN M.; ALVALA,REGINA C.S; CUNHA,ANA PAULA; BRITO,SHEILA; MORAES,OSVALDO L.L..
ABSTRACT This study discusses the climatological aspects of the most severe drought ever recorded in the semiarid region Northeast Brazil. Droughts are recurrent in the region and while El Nino has driven some of these events others are more dependent on the tropical North Atlantic sea surface temperature fields. The drought affecting this region during the last 5 years shows an intensity and impact not seen in several decades in the regional economy and society. The analysis of this event using drought indicators as well as meteorological fields shows that since the middle 1990s to 2016, 16 out of 25 years experienced rainfall below normal. This suggests that the recent drought may have in fact started in the middle-late 1990s, with the intense droughts...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Drought; Northeast Brazil; Rainfall; Water deficit; El Nino; Vulnerability.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000501973
Imagem não selecionada

Imprime registro no formato completo
Climatic effects on sugarcane ripening under the influence of cultivars and crop age Scientia Agricola
Cardozo,Nilceu Piffer; Sentelhas,Paulo Cesar.
The lack of information about the effects of cultivars, crop age and climate on the sugarcane (Saccharum ssp.) crop yield and quality has been the primary factor impacting the sugar-ethanol sector in Brazil. One of the processes about which we do not have a satisfactory understanding is sugarcane ripening and the effects of cultivars, crop age and climate on that. Sugarcane ripening is the process of sucrose accumulation in stalks, which is heavily influenced by several factors, mainly by climatic conditions such as air temperature and water deficits. Because it is a complex process, studies of the variables involved in sugarcane ripening can provide important information, resulting in a better use of commercial cultivars, bringing advantages to growers,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum spp; Air temperature; Precipitation; Water deficit; Sucrose.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000600011
Imagem não selecionada

Imprime registro no formato completo
CLIMATOLOGICAL WATER BALANCE WITH DATA ESTIMATED BY TROPICAL RAINFALL MEASURING MISSION FOR THE DOCE RIVER BASIN REA
Louzada,Franciane L. R. de O.; Xavier,Alexandre C.; Pezzopane,José E. M..
ABSTRACT The Climatic Water Balance (CLIMWB) is very used in the climatic characterization and can also offer important contribution in the identification of the water demand for irrigation of a region. For this, reliable precipitation data with good spatial coverage is required. The Tropical Rainfall Measuring Mission satellite -TRMM-3B43-v7 is a partnership between NASA (National Aeronautics and Space Administration) and Japan's Aerospace Exploration Agency (JAXA), which estimates rainfall data for the tropics region. The aim of this study is to evaluate the CLIMWB obtained by the Thornthwaite & Mather method (1955), with estimated rainfall data with the 3B43 product versus those generated with rainfall data and to map pixel-by-pixel water...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Orbital data; Rainfall; Water deficit; Water availability.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000300376
Imagem não selecionada

Imprime registro no formato completo
Combined effects of low light and water stress on Jatropha curcas L. promotes shoot growth and morphological adjustment Acta Botanica
Carneiro,Isabella Christina Silveira; Pereira,Eduardo Gusmão; Souza,João Paulo.
Jatropha curcas (physic nut) is a plant with economic and pharmaceutical uses. Basic studies on the influence of environmental factors on the early development of J. curcas are important for improving farming techniques and increasing productivity. This study investigated the adjustments of J. curcas to the environmental factors of drought and light stress in order to determine which factors most strongly affect the allocation of biomass during early growth. Leaves, stems, and roots of young plants were sampled and leaf area was measured during January and June in 2011. Plants of J. curcas that were grown in shade and subjected to water stress showed higher biomass allocation to aerial parts (mainly stems), which can be explained as a strategy for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth; Jatropha curcas; Leaf area; Light stress; Water deficit.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400467
Imagem não selecionada

Imprime registro no formato completo
Comparison between climatological and field water balances for a coffee crop Scientia Agricola
Bruno,Isabeli Pereira; Silva,Adriana Lúcia da; Reichardt,Klaus; Dourado-Neto,Durval; Bacchi,Osny Oliveira Santos; Volpe,Clóvis Alberto.
The use of climatological water balances in substitution to complete water balances directly measured in the field allows a more practical crop management, since the climatological water balances are based on data monitored as a routine. This study makes a comparison between these methods in terms of estimatives of evapotranspiration, soil water storage, soil available water, runoff losses, and drainage below root zone, during a two year period, taking as an example a coffee crop of the variety Catuaí, three to five years old. Climatological water balances based on the estimation of the evapotranspiration through the methods of Thornthwaite and Penman-Monteith, can reasonably substitute field measured balances, however underestimating the above mentioned...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Evapotranspiration; Soil water storage; Available water; Water deficit; Water excess.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300001
Imagem não selecionada

Imprime registro no formato completo
Crescimento inicial do cafeeiro Rubi em resposta a doses de nitrogênio, fósforo e potássio e a regimes hídricos. Repositório Alice
NAZARENO, R.B.; OLIVEIRA, C.A. da S.; SANZONOWICZ, C.; SAMPAIO, J.B.R.; SILVA, J.C.P. da; GUERRA, A.F..
O objetivo deste trabalho foi avaliar o crescimento da parte aérea do cafeeiro (Coffea arabica L.) cultivar Rubi MG 1192 submetido a três doses de N, P e K e dois regimes hídricos durante o primeiro ano após o transplante, em 20 de novembro de 2000. O crescimento da planta foi avaliado aos 134, 196, 236, 284, 334 e 383 dias após o transplante (DAT). Houve resposta ao N e ao K no crescimento em número de ramos plagiotrópicos por planta, ao passo que no número de nós com gemas por planta, observou-se resposta apenas ao nitrogênio. Não houve resposta ao N, P e K no aumento da massa seca da parte aérea e no índice de área foliar. Além de mostrar efeito significativo no crescimento do cafeeiro, a irrigação antecipou o rápido crescimento para julho (236 DAT)...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Coffea arabica; Irrigação; Adubação; Déficit hídrico; Solo de cerrado; Irrigation; Fertilizer application; Water deficit; Cerrado soils.
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/handle/doc/109179
Imagem não selecionada

Imprime registro no formato completo
Crescimento inicial, produção e qualidade de frutos de macieiras submetidas a irrigação e fertirrigação. Repositório Alice
BRANCO, M. S. C.; NAVA, G.; ERANANI, P. R..
2016
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Water deficit; Mineral composition; Malus domestica Borkh.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1054332
Imagem não selecionada

Imprime registro no formato completo
Deficiencia hidrica em laranjeira Valencia sobre quatro tipos de porta-enxertos, sob condicao de casa de vegetacao. Repositório Alice
MEDINA, C. L.; MACHADO, E. C.; PINTO, J. M..
bitstream/item/196597/1/Congresso-de-Fisiologia-vegetal.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Porta-enxerto; Casa-de-vegetacao; Orange; Water deficit; Greenhouse; Deficiência Hídrica; Fisiologia; Laranja; Plant physiology; Rootstocks.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/132522
Imagem não selecionada

Imprime registro no formato completo
Demanda hídrica e risco climático de feijão superprecoce na região sul de Mato Grosso do Sul. Infoteca-e
FIETZ, C. R.; COMUNELLO, E.; GARCIA, R. A.; FLUMIGNAN, D. L.; SILVA, S. C. da; MELO, L. C..
bitstream/item/188356/1/ID-36740.pdf
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Water deficit; Ciclo superprecoce; Feijão; Produtividade; Deficiência Hídrica; Beans.
Ano: 2018 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1101445
Imagem não selecionada

Imprime registro no formato completo
Desenvolvimento de cultivares de beterraba sob diferentes tensões da água no solo. Repositório Alice
SILVA, A. O.; SILVA, E. F. F.; BASSOI, L. H.; KLAR, A. E..
O déficit hídrico gerado pelo manejo inadequado da irrigação pode afetar o desenvolvimento e produção das culturas. Com o objetivo de avaliar os efeitos de níveis de tensão da água no solo sobre o desenvolvimento da beterraba, foi conduzido um experimento em casa de vegetação em Botucatu-SP, entre abril e junho de 2012, em delineamento em blocos casualizados com 4 repetições. Os tratamentos compreenderam seis níveis de tensões de água no solo (15, 25, 35, 45, 55, 65 KPa) e duas cultivares de beterraba (Early Wonder e Itapuã 202), totalizando 48 parcelas experimentais. Foram avaliadas a massa fresca e seca da parte aérea e da raiz, altura das plantas, diâmetro da raiz, produtividade total e a relação entre a raiz e a parte aérea das plantas. O aumento da...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Beta vulgaris; Manejo da irrigação; Déficit hídrico; Beterrraba; Irrigação; Beet; Irrigation management; Water deficit.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1015553
Imagem não selecionada

Imprime registro no formato completo
Desenvolvimento de um sintético de milho de ciclo superprecoce (Gorutuba superprecoce) para regiõees áridas brasileiras. Repositório Alice
GAMA, E.E.G.; PACHECO, C. A. P.; LEITE, C.E.P.; SANTOS, M.X.; PARENTONI, S. N.; MEIRELLES, W. F.; CORREA, L.A.; ALVES, V. M. C..
2000
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Milho; Sintetico; Estresse abiotico; Melhoramento; Zea mays; Maize; Stress; Water deficit; Breeding.
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/handle/doc/483817
Imagem não selecionada

Imprime registro no formato completo
Desenvolvimento de um sintético de milho de ciclo superprecoce (Gorutuba superprecoce) para regiões áridas brasileiras. Repositório Alice
GAMA, E.E.G.; PACHECO, C. A. P.; LEITE, C.E.P.; SANTOS, M.X.; PARENTONI, S. N.; MEIRELLES, W.F.; CORREA, L.A.; ALVES, V. M. C..
2000
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Milho; Melhoramento; Estresse abiotico; Sintetico; Maize; Zea mays; Breeding; Stres; Water deficit.
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/handle/doc/484052
Registros recuperados: 137
Primeira ... 1234567 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional