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| Registros recuperados: 17 | |
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| Dias,Adaan S.; Lima,Geovani S. de; Sá,Francisco V. da S.; Gheyi,Hans R.; Soares,Lauriane A. dos A.; Fernandes,Pedro D.. |
| ABSTRACT The problem of the lack of adequate water resources for agriculture has intensified in recent years, making it necessary to use waters with relatively high concentration of salts for the irrigation of crops all over the world. The objective of this study was to evaluate the influence of potassium (K) fertilization as a salt stress attenuator on gas exchanges and photochemical efficiency of West Indian cherry. The crop was cultivated under greenhouse conditions in the municipality of Campina Grande, PB, in lysimeters filled with 250 kg of sandy loam soil. Treatments were distributed in randomized blocks, in a 2 x 4 factorial scheme, with two levels of electrical conductivity of irrigation water - ECw (0.8 and 3.8 dS m-1) and four K doses (50, 75,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malpighia emarginata; Saline stress; Physiology; Fruit crops. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900628 |
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| Silva,Luderlândio A.; Brito,Marcos E. B.; Fernandes,Pedro D.; Sá,Francisco V. da S.; Moreira,Rômulo C. L.; Almeida Neto,Isidro P. de. |
| ABSTRACT This study aimed to evaluate the growth and physiology of citrus scion/rootstock combinations irrigated with saline water until the pre-flowering stage. The experiment was conducted in drainage lysimeters with capacity for 150 dm3, in randomized block design in a 2 x 10 factorial scheme, corresponding to two electrical conductivities of water (S1 = 0.3 and S2 = 3.0 dS m-1) and ten scion/rootstock combinations (nine hybrids and one commercial variety) grafted with Tahiti lime, in three repetitions and one plant per plot. Grafted seedlings were transplanted one year after sowing, subjected to salt stress from 15 days after transplanting until the pre-flowering period, and evaluated for gas exchanges and growth. The irrigation with 3.0 dS m-1 saline... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus spp.; Poncirus trifoliata; Gas exchanges; Salinity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000800598 |
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| Sá,Francisco V. da S.; Paiva,Emanoela P. de; Mesquita,Evandro F. de; Bertino,Antonio M. P.; Barbosa,Marcelo A.; Souto,Lauter S.. |
| ABSTRACT This study aimed to evaluate the tolerance of castor bean cultivars under salt stress during the initial growth stage. The experiment was set in randomized blocks, in a 5 x 4 factorial scheme, resulting in 20 treatments, 5 salinity levels (0.6-control, 1.2, 1.8, 2.4 and 3.0 dS m-1) and 4 castor bean cultivars (BRS Energy, LA Guarani, BRS Gabriela and IAC 028)] with 3 replicates. At 30 days after sowing, plants were evaluated for growth, dry matter accumulation and salt tolerance. Increased salinity levels in the water used for irrigation reduced the growth of all the studied cultivars. The salt tolerance of the studied castor bean cultivars follows the following order: BRS Energia > BRS Gabriela = IAC 028 > LA Guarani. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ricinus communis L.; Growth; Selection germoplasm; Water quality. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000600557 |
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| Silva,Evandro M. da; Lima,Geovani S. de; Gheyi,Hans R.; Nobre,Reginaldo G.; Sá,Francisco V. da S.; Souza,Leandro de P.. |
| ABSTRACT Nitrogen (N) fertilization has been tested for the mitigation of salt stress in some species including fruit crops. However, special attention should be paid to the source of N, due to the different compositions and saline indices of the fertilizers, particularly when irrigation is conducted using waters with salinity levels that are restrictive to agriculture. Thus, this study evaluated the effect of fertilization with N sources on the growth and gas exchanges of soursop irrigated with saline water after transplanting. The experiment was carried out in greenhouse at the Center of Technology and Natural Resources of the Federal University of Campina Grande, and treatments were arranged in randomized blocks, in 4 x 4 factorial scheme, corresponding... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annona muricata L.; Salinity; Nitrogen; Photosynthesis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001100776 |
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| Sá,Francisco V. da S.; Nobre,Reginaldo G.; Silva,Luderlândio de A.; Moreira,Rômulo C. L.; Paiva,Emanoela P. de; Oliveira,Fernanda A. de. |
| ABSTRACT This study aimed to evaluate the tolerance of guava rootstocks under salt stress in the initial development stage. The experiment was conducted in a greenhouse in a randomized block design in a 5 x 3 factorial, consisting of five levels of irrigation water salinity (0.6, 1.2, 1.8, 2.4 and 3.0 dS m-1) and three guava rootstocks (‘Crioula’, ‘Paluma’ and ‘Ogawa’), with four replicates and four plants per replicate. Emergence, growth and phytomass accumulation were evaluated 30 days after sowing. Increased salinity restricts guava emergence, growth and phytomass accumulation, and the most drastic effects occur at levels higher than 1.8 dS m-1. The cultivar ‘Crioula’ is more tolerant to salinity in relation to ‘Paluma’ and ‘Ogawa’, and can be indicated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Psidium guajava L.; Irrigation; Salinity; Propagation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001201072 |
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| Nogueira,Narjara W.; Torres,Salvador B.; Freitas,Rômulo M. O. de; Santos,Paulo C. da S.; Sá,Francisco V. da S.; Leite,Moadir de S.. |
| ABSTRACT The objective of this study was to evaluate the effects of salinity on the germination and initial growth of ‘jurema-de-embira’ (Mimosa ophthalmocentra) seedlings at different temperatures. The experiment was installed in a completely randomized design, in a factorial scheme of eight salt concentrations (0; 4.0; 8.0; 12.0; 16.0; 20.0; 24.0 and 28.0 dS m-1) and four temperatures (25, 30, 35 and 20-30 °C) in four replicates of 25 seeds under an 8-h photoperiod in Biochemical Oxygen Demand germinators. The variables analyzed were: germination, germination speed index, shoot and root lengths, and shoot, root and total dry matter. Temperature variation influences the response of ‘jurema-de-embira’ seeds to salinity, and the salt stress is intensified... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fabaceae; Forest species; Caatinga; Salinity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000400273 |
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| Sá,Francisco V. da S.; Gheyi,Hans R.; Lima,Geovani S. de; Paiva,Emanoela P. de; Moreira,Rômulo C. L.; Silva,Luderlândio de A.. |
| ABSTRACT The objective of this study was to evaluate the interaction between water salinity and doses of nitrogen and phosphorus on chlorophyll a fluorescence and on the growth of West Indian Cherry (‘acerola’) plants in the initial growth stage. The research was carried out in a protected environment, in lysimeters filled with Regolithic Neosol of loamy clay texture and low initial phosphorus content. The experiment was conducted in a randomized block design, arranged in a factorial scheme with two factors, five levels of electrical conductivity of the irrigation water - ECw (0.6, 1.4, 2.2, 3.0 and 3.8 dS m-1) and four proportions of the recommendation of phosphorus/nitrogen - P/N (100:100, 140:100, 100:140 and 140:140% P/N of recommendation), with three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorophyll fluorescence; Saline stress; Fertilization; Malphigia emarginata. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300158 |
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| Paiva,Emanoela P. de; Sá,Francisco V. da S.; Torres,Salvador B.; Brito,Marcos E. B.; Moreira,Romulo C. L.; Silva,Luderlândio de A.. |
| ABSTRACT The objective of this study was to evaluate the tolerance of cowpea cultivars to water stress, during seed germination and seedling establishment. For this, a completely randomized experimental design was used in a factorial scheme consisting of nine cultivars of cowpea (BRS Guariba, BRS Potengi, BRS Itaim, BRS 17 Gurguéia, BRS Aracê, Paulistinha, Maratanã, Costela-de-Vaca and Canapu-Branco) and two levels of osmotic potential induced by PEG 6000 (0.0 MPa (control) and -0.4 MPa) in four replicates of 50 seeds. The variables analysed were germination, germination first count, root and shoot lengths, and dry matter accumulation of shoots and roots. The dissimilarity between the genotypes was also determined by Euclidean distance. Germination and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Initial growth; Polyethylene glycol; Osmotic potential. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000600407 |
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| Ferreira,Nubia M.; Mesquita,Evandro F. de; Sá,Francisco V. da S.; Bertino,Antonio M. P.; Paiva,Emanoela P. de; Farias,Soahd A. R.. |
| RESUMOObjetivou-se, neste trabalho, avaliar o crescimento e produção da mamona cv. BRS-188 Paraguaçu que tem sido recomendada para a região Nordeste do Brasil em relação à adubação orgânica, cobertura morta e níveis de reposição de água. Para isto foi desenvolvido o experimento em condições de campo, na cidade de Catolé do Rocha, PB, usando-se um delineamento experimental em blocos casualizados com fatorial 2 x 2 x 4, constituído de dois níveis de reposição de água em função da evapotranspiração da cultura - ETc de 100 e 50% no solo sem e com cobertura morta (Cenchrus ciliares L) e quatro níveis de biofertilizante bovino (0; 1,2; 2,4 e 3,6 L planta-1), aplicados ao solo totalizando 16 tratamentos com três repetições e dez plantas por tratamento totalizando... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ricinus communis L.; Sistema de cultivo; Manejo de água. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000900857 |
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| Nogueira,Narjara W.; Torres,Salvador B.; Freitas,Rômulo M. O. de; Castro,Thiago H. da S.; Sá,Francisco V. da S.. |
| ABSTRACT The process of water imbibition by the seed depends on temperature and water availability, which according to the absorbed water retention capacity will determine the success of the germination process. Thus, this study aimed to investigate the effects of water stress on the germination and vigor of ‘jurema-de-embira’ seeds under different temperatures. The experimental design was completely randomized in a 7 x 4 factorial scheme (osmotic potential and temperature) with four replicates of 25 seeds each. The osmotic potentials of 0, -0.1, -0.2, -0.3, -0.4, -0.5 and -0.6 MPa at temperatures of 25, 30 and 35 °C and alternated of 20-30 °C, under photoperiod of 8 h, were evaluated. Germination percentage, germination speed index, shoot and root length,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mimosa ophthalmocentra Mart. ex; Benth; Fabaceae; Forest species; Caatinga; Osmotic potentials. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000400244 |
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| Silva,Luderlândio de A.; Brito,Marcos E. B.; Sá,Francisco V. da S.; Moreira,Rômulo C. L.; Soares Filho,Walter dos S.; Fernandes,Pedro D.. |
| RESUMO Objetivou-se estudar os mecanismos fisiológicos de percepção e tolerância ao estresse salino de híbridos de citros em cultivo hidropônico. O experimento foi realizado em ambiente protegido do Centro de Ciências e Tecnologia Agroalimentar - CCTA, da Universidade Federal de Campina Grande - UFCG, Pombal, PB. Foram avaliados, em blocos casualizados, em esquema fatorial (2x5), dois níveis de salinidade da água de irrigação (0,3 e 4,0 dS m-1) e cinco híbridos recomendados para uso como porta-enxerto [HTR - 069, HTR - 116, HTR - 127, LCR x TR - 001 e TSKC x (LCR x TR) - 040)], com três repetições. Os genótipos foram cultivados em sistema hidropônico adaptado em vasos de Leonard, utilizando solução de Hoagland. O início da aplicação da solução nutritiva... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus spp.; Poncirus; Solução de Hoagland; Trocas gasosas. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001300001 |
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| Sá,Francisco V. da S.; Brito,Marcos E. B.; Silva,Luderlândio de A.; Moreira,Rômulo C. L.; Paiva,Emanoela P. de; Souto,Lauter S.. |
| ABSTRACT The salinity has complex effects on the physiological, nutritional and hormonal interactions of plants. This study aimed to evaluate the mitigating action of exogenous application of different types and concentrations of phytohormones on Carica papaya under salt stress. The experiment was conducted in greenhouse, using a randomized block design with treatments formed from a 2 x 3 x 5 factorial scheme, relative to two concentrations of salts in the irrigation water (0.6 and 2.4 dS m-1), three types of phytohormones [Auxin = indole-3-acetic acid; Cytokinin = CPPU (N-(2-chloro-pyridyl)-N-phenylurea) and Gibberellin = gibberellic acid(AG3)], and five concentrations of the phytohormone (0, 12.5, 25.0, 37.5 and 50.0 µM L-1), with three repetitions,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Auxins; Cytokinins; Gibberellins; Salinity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300170 |
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| Sá,Francisco V. da S.; Santos,Manoel G. dos; Barros Júnior,Aurélio P.; Albuquerque,José R. T. de; Souza,Almir R. E. de; Ribeiro,Rayanne M. P.. |
| ABSTRACT This study aimed to evaluate the emergence, growth, biomass accumulation and tolerance of peanut genotypes under salt stress. The experiment was conducted in a protected environment (greenhouse), evaluating six peanut genotypes (Tatuí, L7151, Caiapó, IAC8112, IAC881 and Havana), which were subjected to two levels of irrigation water salinity (0.5 [control] and 3.5 dS m-1), arranged in a 6 x 2 factorial scheme, in a randomized block design, with five repetitions, with two plants per plot. Plants were cultivated for 30 days after sowing in lysimeters with capacity for 0.5 dm3, filled with a mixture of non-saline, non-sodic soil and commercial substrate in 1:1 proportion on volume basis. During this period, plants were evaluated for emergence,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Irrigation; Salinity; Genetic improvement. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000100037 |
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| Soares,Lauriane A. dos A.; Fernandes,Pedro D.; Lima,Geovani S. de; Suassuna,Janivan F.; Brito,Marcos E. B.; Sá,Francisco V. da S.. |
| ABSTRACT Using saline water in the agricultural activity has become a reality in several regions of the world. Due to the increase in the demand for fresh water, it is necessary to use cultivation strategies and genotypes tolerant to saline stress to make the production viable. In this context, effects of irrigation management strategies with low-salinity water (0.8 dS m-1) and high-salinity water (9.0 dS m-1) were evaluated, varying the phenological stages of the plants, on the growth and fiber quality of colored cotton. Three cotton cultivars submitted to seven irrigation management strategies were used, constituting a 3 x 7 factorial scheme, in a randomized block design with three replicates, in plots and in protected environment. Saline water... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum L.; Saline stress; Phenological stages. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000500332 |
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| Sá,Francisco V. da S.; Brito,Marcos E. B.; Figueiredo,Lizaiane C. de; Melo,Alberto S. de; Silva,Luderlândio de A.; Moreira,Rômulo C. L.. |
| ABSTRACT The objective was to study the biochemical changes and dry matter content in lemon and mandarin hybrids under salt stress during rootstock formation. For this, a study was conducted in randomized complete block, using a 2 x 5 factorial scheme, with two salinity levels (0.3 and 4.0 dS m-1) applied in five citrus rootstock genotypes (1. TSKC x CTARG - 019; 2. LRF; 3. TSKC x (LCR x TR) - 040; 4. LCRSTC and 5. LVK), with three replicates and four plants per plot. At 90 days after sowing, saline treatments started to be applied and continued until 120 days after sowing, the moment in which the plants were collected for evaluation of biochemical characteristics and phytomass accumulation. The increase in water salinity negatively affected the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus spp.; Salinity; Chlorophyll and carotenoids; Water status. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000400249 |
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| Sá,Francisco V. da S.; Brito,Marcos E. B.; Melo,Alberto S. de; Antônio Neto,Pedro; Fernandes,Pedro D.; Ferreira,Ilkelan B.. |
| Diante da relevância socioeconômica e alimentar do mamoeiro para a região nordeste, onde naturalmente ocorrem águas com teores elevados de sais, notadamente no Semiárido, objetivou-se avaliar a emergência de plantas e o crescimento de duas cultivares de mamoeiro irrigadas com águas salinas. O experimento foi realizado em casa de vegetação do Centro de Ciências e Tecnologia Agroalimentar, da Universidade Federal de Campina Grande (CCTA-UFCG), Campus Pombal, PB, no período de maio a julho de 2011, usando-se um delineamento experimental de blocos casualizados, com os tratamentos distribuídos em esquema fatorial 4 x 2, constituídos de quatro níveis de salinidade da água (1,2; 2,4; 3,6 e 4,8 dS m-1) além de duas cultivares de mamoeiro (Sunrise Solo e Tainung-1)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya L.; Crescimento; Estresse. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013001000004 |
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| Pereira,Tiago de A.; Souto,Lauter S.; Sá,Francisco V. da S.; Dutra Filho,João A.; Souza,Tarso M. A. de; Paiva,Emanoela P. de. |
| ABSTRACT The objective was to study the influence of potassium sulfate doses applied to the soil on the growth and production of green dwarf coconut (Cocos nucifera L.) grown in saline-sodic soil. The experiment was conducted from January 2013 to January 2016, in a commercial plantation in the Sector 7 of the ‘Várzeas de Sousa’ Irrigation District, PB, Brazil, in saline-sodic Ebanic Vertisol. The experiment used coconut plants belonging to green dwarf variety, arranged in a 7.0 x 7.0 m rectangular shape, starting the third year in the production stabilization stage. The adopted experimental design was randomized blocks, evaluating five doses of potassium sulfate (K2SO4) (0, 0.52, 1.04, 2.08 and 4.16 kg plant-1 year-1), with four replicates of four plants... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cocos nucifera L.; Potassium fertilization; Soil sodicity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000700454 |
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| Registros recuperados: 17 | |
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