|
|
|
Registros recuperados: 26 | |
|
|
Abreu,Carlos E.B. de; Prisco,José T.; Nogueira,Ana R.C.; Bezerra,Marlos A.; Lacerda,Claudivan F. de; Gomes-Filho,Enéas. |
The effects of salt stress on some physiological and biochemical traits were evaluated in dwarf-cashew seedlings at the same developmental stage. Seeds were sown in trays containing vermiculite moistened with distilled water or with NaCl solutions having different electrical conductivities: 0.7, 1.8, 6.0, 9.8, 13.4, 17.4 and 20.6 dS m-1. Salinity delayed and inhibited seedling growth and development, particularly in the shoot. Concentrations of Na+ and Cl-, but not of K+, increased with increasing stress severity. With the exception of proline, concentration of organic solutes was only marginally affected by salt stress. Catalase activity in leaves increased slightly as a result of salt stress, whereas guaiacol peroxidase activity was induced only under... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anacardium occidentale; Antioxidant enzymes; Lipid peroxidation; Oxidative stress; Protein pattern; Salt stress. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000200003 |
| |
|
|
Albano,Francisca G.; Cavalcante,Ítalo H. L.; Machado,Jailson S.; Lacerda,Claudivan F. de; Silva,Esdras R. da; Sousa,Humberto G. de. |
ABSTRACT The use of organic waste in the composition of substrates for seedlings constitutes an alternative to the recycling of these materials. Thus, an experiment was conducted with the objective to evaluate the production of ‘Formosa’ papaya seedlings in substrate containing carnauba wax residue, under foliar fertilization. The experimental design was completely randomized with five replicates, with treatments distributed in a 5 x 2 factorial scheme, corresponding to five materials used as substrates, in the presence and absence of foliar fertilization. The materials used were: earthworm humus, carnauba residue + fresh rice husk; carnauba residue in powder; carnauba residue semi-decomposed and mixture of carnauba residues: carnauba residue + fresh rice... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Quality seedlings; Mineral nutrition. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000200128 |
| |
|
|
Amorim,Aiala V; Gomes-Filho,Enéas; Bezerra,Marios A; Prisco,José T; Lacerda,Claudivan F. de. |
A exploração do cajueiro sob condições de irrigação tem-se mostrado bastante promissora, especialmente no estado do Ceará, porém a resposta dessa cultura ao regime hídrico depende do genótipo. Objetivouse, com este trabalho, comparar respostas fisiológicas e bioquímicas (teores de solutos orgânicos e inorgânicos e trocas gasosas), tal como a produtividade de plantas de cajueiro anão precoce (Anacardium occidentale L.) sob dois regimes hídricos (sequeiro e irrigado). O experimento foi conduzido no Campo Experimental da Embrapa Agroindústria Tropical, em Pacajus CE, no período de agosto de 2006 a janeiro de 2007. As plantas foram submetidas a dois tratamentos: um sem irrigação e outro com água de poço com condutividade elétrica (CEa) de 0,5 dS m-1. As... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anacardium occidentale; Estresse hídrico; Produtividade; Trocas gasosas. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662011001000004 |
| |
|
| |
|
|
Assis Júnior,José O. de; Lacerda,Claudivan F. de; Silva,Flávio B. da; Silva,Francisco L. B. da; Bezerra,Marlos A.; Gheyi,Hans R.. |
Neste trabalho, avaliaram-se o acúmulo de sais no solo e a produtividade do feijão-de-corda, em função da fração de lixiviação (FL) e da salinidade da água de irrigação. Utilizou-se de delineamento em blocos ao acaso, com quatro tratamentos e cinco repetições. Foram estudados os seguintes tratamentos: 1 - água do poço com condutividade elétrica (CEa) de 0,8 dS m-1 (sem FL); 2 - água salina com CEa de 5,0 dS m-1 sem FL; 3 - água salina com CEa de 5,0 dS m-1 com FL de 0,14; 4 - água salina com CEa de 5,0 dS m-1 com FL de 0,28. Foram avaliadas as seguintes variáveis: acúmulo de sais no solo, crescimento vegetativo, produtividade, trocas gasosas e teores de Na+, Ca+2, K+ e Cl- nas folhas. A aplicação de água salina provocou acúmulo de sais no solo, porém esses... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Água salina; Vigna unguiculata L. Walp.; Estresse salino. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162007000400013 |
| |
|
|
Barbosa,Francisca E. L.; Lacerda,Claudivan F. de; Amorim,Aiala V.; Costa,Raimundo N. T.; Silva,José A. da; Hernandez,Fernando F. F.. |
ABSTRACT This research aimed to evaluate the yield and economic viability of three crop cycles of the banana cv. ‘Prata Anã’ in association with perennial herbaceous legumes, natural vegetation, or compared with the conventional management. The research was conducted using a complete randomized block design with split-split plots and four replicates. The plots were formed by four irrigation depths: 50, 75, 100 and 125% of crop evapotranspiration, and the subplots by cover crops (Calopogonium muconoides, Pueraria phaseoloides, and natural cover without N addition) or no cover crops with addition of N fertilization (conventional management). The subsubplots were formed by the second, third and fourth banana production cycles. Yield and economic viability of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Perennial legumes; Musa spp.; Nitrogen. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001201078 |
| |
|
|
Barbosa,Francisca E. L.; Lacerda,Claudivan F. de; Feitosa,Hernandes de O.; Soares,Ismail; Andrade Filho,Francisco L. de; Amorim,Aiala V.. |
Com este trabalho objetivou-se avaliar o crescimento, a nutrição e a produção da bananeira Prata Anã (Musa spp), consorciada com leguminosas e submetida a diferentes lâminas de irrigação. O delineamento experimental utilizado foi em blocos casualizados em parcelas subdivididas, com cinco repetições. As parcelas foram formadas por quatro lâminas de irrigação: 50, 75, 100 e 125% da evapotranspiração da cultura (ETc) e as subparcelas pela testemunha (manejo convencional sem plantas de cobertura) e três tipos de plantas de cobertura consorciadas com a bananeira, são elas: vegetação espontânea (VE), cudzu tropical em sucessão à crotalária (CK) e calopogônio em sucessão ao feijão-de-porco (FC). Avaliaram-se, nas plantas de bananeira, a altura, a circunferência... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manejo da irrigação; Adubação verde; Musa spp. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013001200004 |
| |
|
| |
|
|
Braz,Régis dos S.; Lacerda,Claudivan F. de; Assis Júnior,Raimundo N. de; Ferreira,Jorge F. da S.; Oliveira,Adriana C. de; Ribeiro,Aureliano de A.. |
ABSTRACT The nitrogen fertilization, in general, minimizes the effects of salinity on plants, but the mitigating action depends on plant species, cultivar, soil texture and plant age, among other factors. The objective of this study was to evaluate the effects of irrigation water salinity and nitrogen fertilization on maize physiology and growth (Zea mays) in soils with different textures. The experiment was carried out in a greenhouse in Fortaleza City, CE, Brazil, in PVC soil columns (100 x 20 cm). The design was completely randomized using the factorial 2 x 2 x 4, referring to two soils, an Ultisol and a Quartzipsamment, nitrogen doses of 105 and 210 kg ha-1, under irrigation with saline water of 0.5, 2.0, 4.0 and 6.0 dS m-1, with four repetitions. With... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Leaf gas exchange; Soil texture. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001200907 |
| |
|
|
Campelo,David H.; Teixeira,Adunias dos S.; Moreira,Luis C. J.; Lacerda,Claudivan F. de. |
ABSTRACT The objective of this study was to evaluate the growth, the production components and the water (WUE) and nitrogen use efficiency (NUE) in maize (Zea mays L.), as function of water depths and nitrogen doses. The experimental design was randomized blocks in a split-plot scheme with four repetitions. The irrigation treatments applied in the plots were composed of four water depths: 80, 90, 100 and 110% of the water requirement, based on the soil field capacity, while the N doses, distributed in the subplots, were 0, 60, 120 and 180 kg ha-1. Increases in water depths and in N doses promote linear increases in plant height and leaf area index. For cycle I (2015) the maximum yield (16,778.3 kg ha-1) was reached with the irrigation depth of 538.1 mm and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Irrigation management; Mineral fertilization. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001000747 |
| |
|
|
Freitas,Cley A. S. de; Silva,Alexandre R. A. da; Bezerra,Francisco M. L.; Lacerda,Claudivan F. de; Pereira Filho,João V.; Sousa,Geocleber G. de. |
Este trabalho teve o objetivo de avaliar os efeitos de cinco níveis de irrigação por gotejamento, em três cultivares de mamoneira (IAC Guarani, Mirante 10 e BRS Paraguaçu) mediante a quantificação da produção de matéria seca pelas diferentes partes da planta (limbo foliar, caule e pecíolo) e a mensuração das trocas gasosas (fotossíntese, condutância estomática e transpiração). O experimento foi conduzido no campo, na Fazenda Experimental Vale do Curu, Pentecoste, CE, sob delineamento experimental em blocos casualizados com parcelas subdivididas, em esquema fatorial 5 x 3 e com três repetições. Os tratamentos foram cinco lâminas de irrigação (25, 50, 75, 100 e 125% da evaporação do tanque Classe "A") e três cultivares. Os diferentes níveis de irrigação... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ricinus communis; Biomassa; Fotossíntese. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662011001100009 |
| |
|
|
Lacerda,Claudivan F. de; Ferreira,Jorge F. da S.; Suarez,Donald L.; Freitas,Emanuel D.; Liu,Xuan; Ribeiro,Aureliano de A.. |
ABSTRACT The aim of this study was to evaluate the accumulation of salts in the soil from irrigation water and of N and K from fertilization. The experiment was conducted in PVC columns (20 cm in diameter and 100 cm in height), filled with non-saline soil, and cultivated with maize. A completely randomized block design in a 4 x 4 factorial was used, with four levels of salinity (0.5, 2.5, 5.0 and 7.5 dS m-1), four N rates, and five replicates. Nitrogen was applied as urea and potassium nitrate at the following rates: N1: N recommendation for maize (2.6 g column-1); N2: 0.3 times (0.78 g column-1) the recommended N1 dose; N3 and N4 with N based on N1 and N2 doses, respectively, reduced proportionally based on the evapotranspiration reduction caused by... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salinity; Nitrate; Nutrients leaching. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000800553 |
| |
|
|
Lacerda,Claudivan F. de; Neves,Antonia L. R.; Guimarães,Francisco V. A.; Silva,Francisco L. B. da; Prisco,José T.; Gheyi,Hans R.. |
O objetivo deste trabalho foi investigar os efeitos do uso de água salina em diferentes estádios de desenvolvimento de plantas de feijão-de-corda sobre a eficiência de utilização de água e de nutrientes. O experimento foi conduzido no campo e obedeceu ao delineamento em blocos ao acaso, com cinco tratamentos e cinco repetições. Os tratamentos empregados foram: T1 - água de poço com condutividade elétrica (CEa) de 0,8 dS m-1 durante todo o ciclo; T2 - água salina (CEa de 5,0 dS m-1) durante todo o ciclo; T3, T4 e T5 - água salina de 0 a 22 dias após o plantio (DAP), de 23 a 42 DAP e de 43 a 62 DAP, respectivamente. As plantas dos tratamentos T3, T4 e T5 foram irrigadas com água de poço nas demais fases do ciclo. Aos 8; 23; 43 e 63 DAP, as plantas foram... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Salinidade; Eficiência no uso de água; Eficiência de utilização de nutrientes. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162009000200005 |
| |
|
|
Lima,Alan D.; Bezerra,Francisco M. S.; Neves,Antônia L. R.; Sousa,Carlos H. C. de; Lacerda,Claudivan F. de; Bezerra,Antônio M. E.. |
ABSTRACT The objective of this study was to evaluate the growth of forest species under conditions of salinity and water deficit. The experimental design was completely randomized in a triple factorial scheme with four forest species (Neem - Azadirachta indica A. Juss, ‘Aroeira’ - Myracrodruon urundeuva Fr Allemão, ‘Ipê’ - Tabebuia impetiginosa (Mart. ex. DC.) Standl and ‘Sabiá’ - Mimosa caesalpiniifoliaBenth), two salinity levels (1.2 and 8.6 dS m-1) and two water regimes (with and without water restriction). Plant height, stem diameter, number of leaves, shoot dry matter, root dry matter and total dry matter were measured. For all the studied variables, there was statistical significance for the factors species (A) and salinity (B), individually.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Native plants; Salt stress; Water stress. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001100753 |
| |
|
|
Lima,Alan D.; Sousa,Carlos H. C.; Lacerda,Claudivan F. de; Bezerra,Marlos A.; Silva,Evandro N.; Neves,Antônia L. R.. |
ABSTRACT The objective of this study was to evaluate gas exchanges in seedlings of forest species grown in saline soils and subjected to soil waterlogging cycles. The experimental design was completely randomized in a factorial arrangement, with four forest species: Myracrodruon urundeuva Fr Allemão, Mimosa caesalpiniifolia Benth, Tabebuia impetiginosa (Mart. ex. DC.) Standl and Azadirachta indica A. Juss, two soil salinity levels (1.2 and 8.6 dS m-1) and two water regimes (with and without waterlogging). Measurements of stomatal conductance, transpiration and CO2 assimilation rate were performed before and after each waterlogging period. The interaction of the highest saline level (8.6 dS m-1) and waterlogging caused greater reductions in leaf gas... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Photosynthesis; Salt stress; Water excess; Caatinga. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001000670 |
| |
|
| |
|
|
Neves,Antonia L. R.; Lacerda,Claudivan F. de; Guimarães,Francisco V. A.; Gomes Filho,Enéas; Feitosa,Daniel R. C.. |
Realizou-se este trabalho com o objetivo de estudar os efeitos da aplicação de água salina nos diferentes estádios de desenvolvimento de plantas de feijão-de-corda sobre as trocas gasosas, o crescimento e os teores de minerais. O experimento foi conduzido no campo e obedeceu o delineamento em blocos ao acaso, com cinco tratamentos e cinco repetições. Os tratamentos utilizados foram: T1 - água do poço (CEa de 0,8 dS m-1) durante todo o ciclo (controle); T2 - água salina (CEa de 5,0 dS m-1) durante todo o ciclo; T3, T4 e T5 - água salina de 0 a 22, de 23 a 42 e de 43 a 62 dias após o plantio (DAP), respectivamente. As plantas dos tratamentos T3, T4 e T5 foram irrigadas com água do poço nas demais fases do ciclo. Realizaram-se, ao longo do ciclo da cultura,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Salinidade; Irrigação; Nutrição mineral. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662009000700009 |
| |
|
|
Neves,Antônia L. R.; Lacerda,Claudivan F. de; Oliveira,Adriana C. de; Sousa,Carlos H. C.; Oliveira,Francisco I. F.; Ribeiro,Maria da S. de S.. |
ABSTRACT The development of agriculture in the northeastern semi-arid region depends, at least in part, on the correct exploitation and efficient use of natural resources. The objective of this study was to evaluate the effects of the use of saline water on morphophysiological responses and sensory analysis of ‘Boa noite’ plants (Catharanthus roseus) in soil fertilized with bovine biofertilizer. A completely randomized design was used in the split plot arrangement, the plots being formed by the five irrigation water salinity levels (0.5, 2.5, 5.0, 7.5 and 10 dS m-1), and the subplots by two frequencies of application of the 150 mL pot-1 of liquid bovine biofertilizer (divided into one and five times), with five replicates. The analysed variables were: leaf... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ornamental plants; Salt tolerance; Sensory analysis. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000100022 |
| |
|
|
Oliveira,Francisco I. F.; Medeiros,Wiliana J. F. de; Lacerda,Claudivan F. de; Neves,Antônia L. R.; Oliveira,Davi R.. |
ABSTRACT Biosaline agriculture is an option for using waters with lower quality. Thus, the objective of this study was to evaluate the growth of ornamental species under irrigation with increasing water salinity levels in two methods of water application. The study was conducted in a greenhouse, in the municipality of Fortaleza, Ceará, Brazil. The treatments were distributed in randomized blocks in split plots, with six levels of water salinity in the plots (0.6 - control, 1.2, 1.8, 2.4, 3.0 and 3.6 dS m-1), two methods of water application in the subplots (localized and sprinkler irrigation) and four ornamental species in the sub-subplots (Catharanthus roseus, Allamanda cathartica, Ixora coccinea and Duranta erecta), with four replicates. Increase in... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water quality; Salt stress; Salt tolerance; Ornamentals species. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001100739 |
| |
|
|
Silva,Alexandre R. A. da; Bezerra,Francisco M. L.; Lacerda,Claudivan F. de; Miranda,Rafael de S.; Marques,Elton C.; Gomes-Filho,Enéas. |
ABSTRACT The objective of this study was to investigate the biochemical mechanisms associated with isolated and/or concurrent actions of drought and soil salinity in seedlings of coconut tree, through the accumulation of organic solutes (soluble carbohydrates, soluble amino N and free proline) in leaves and roots. The experiment, conducted in a protected environment, in Fortaleza, Brazil, in a randomized block design, in a split-plot arrangement, evaluated the effects of different levels of water stress (plots) by imposing distinct percentages of replacement of water losses through crop potential evapotranspiration - ETpc (20, 40, 60, 80 and 100%), associated with subplots consisting of increasing levels of soil salinity in saturation extract (1.72, 6.25,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cocos nucifera L.; Multiple stresses; Biochemical mechanisms. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001101002 |
| |
Registros recuperados: 26 | |
|
|
|