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| Registros recuperados: 13 | |
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| Toledo,João V.; Zolnier,Sérgio; Silva,Thieres G. F. da; Boehringer,Davi; Steidle Neto,Antonio J.. |
| ABSTRACT: The aim of this research was to evaluate the effect of distinct levels of salinity on the evapotranspiration of the RB867515, RB855453, RB92579 and RB928064 sugarcane cultivars. The evapotranspiration was monitored during daytime period under meteorological conditions influenced, mainly by cloud variations. The salinity values were established by addition of 0, 50, 100 and 150 mM of Sodium Chloride (NaCl) to the nutrient solution, which was applied by fertigation, in such way that the electrical conductivity (EC) of the leached solution was near 3, 6, 10 and 13 dS m−1, respectively. The increase of the NaCl concentration in the nutrient solution affected, significantly and in a linear manner, the evapotranspiration of all sugarcane cultivars,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Efficient water use; Saccharum officinarum; Saline stress; Salinization. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000500940 |
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| Badar‑uz‑Zaman,; Ali,Arshad; Hyder,Syed Ishtiaq; Arshadullah,Muhammad; Bhatti,Saqib Umar. |
| The objective of this work was to determine if KCl could be a useful nutrient primer for safe seed germination in maize crop under salt stress conditions. Seed priming was done using 50 mmol L‑1 of muriate of potash, and germination and seedling growth were evaluated after salt stress with NaCl up to 50 mmol L‑1. Another set of seeds was tested under the same salt stress conditions without priming. Under salinity stress, germination percentage, germination rate index, germination coefficient, and seedling vigor indexes were higher in primed seeds. In unprimed seeds, mean germination time increased, while the germination rate index and the fresh and dry matter mass decreased more sharply with salinity stress. The Na/K ratio was higher in unprimed seeds. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Muriate of potash; Osmopriming; Saline stress; Sodium chloride. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000800020 |
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| Benedetti,Lariza; Scherner,Ananda; C. Cuchiara,Cristina; Moraes,Ítalo L.; A. Avila,Luis; Deuner,Sidnei. |
| Abstract Background: Soybean cultivation has been an option used to diversify the production system and perform herbicide rotation in irrigated rice crops in the lowland soils of the Rio Grande do Sul State, southern Brazil. However, elevated salinity levels have been detected in these soils that can inhibit plant growth due to the reduction of the osmotic potential of the soil solution and can causes toxicity. The combination of stress factors in the plantation areas can intensify deleterious effects, such as changes in salinity associated with herbicides that trigger oxidative stress in crops. Objective: This study aimed to evaluate osmotic potential, cell damage, and enzyme activities of the antioxidant metabolism on soybean after treatment with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Sulfentrazone; S-metolachlor; Antioxidant enzymes; Saline stress; Cellular damage. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100301 |
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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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| Wanderley,José A. C.; Azevedo,Carlos A. V. de; Brito,Marcos E. B.; Cordão,Mailson A.; Lima,Robson F. de; Ferreira,Fagner N.. |
| ABSTRACT The study aimed to evaluate the mitigating effect of nitrogen (N) on the damages caused by irrigation water salinity, in the production of yellow passion fruit seedlings. A randomized block design in split plots was used, with five levels of irrigation water salinity (plot) (0.3, 1.0, 1.7, 2.4 and 3.1 dS m-1) and five doses of N fertilization (sub-plot) (180, 240, 300, 360 and 420 mg of N dm-3), with five replicates, totaling 125 experimental units, with one plant per plot. The seedlings were produced in 3.780 mL tubes, used as drainage lysimeter, which received a daily irrigation depth based on water balance. Growth and contents of chlorophyll and carotenoids were evaluated at 85 days after sowing. The increase in irrigation water salinity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passiflora edulis f. flavicarpa; Chlorophyll a; Saline stress. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000800541 |
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| Silva,Aldeir R.; Bezerra,Francisco T. C.; Cavalcante,Lourival F.; Pereira,Walter E.; Araújo,Leandro M.; Bezerra,Marlene A. F.. |
| ABSTRACT Application of saline water causes water and salt stress, changing the behavior of the plants. The aim of this work was to evaluate the accumulation and allocation of biomass in sugar-apple seedlings under frequencies of irrigation with saline water in a substrate with soil conditioner, as well as the effect of container volume. The treatments were obtained from the arrangement between polymer doses (0, 0.2, 0.6, 1.0 and 1.2 g dm-3) and electrical conductivity of irrigation water (0.3; 1.1; 2.7; 4.3 and 5.0 dS m-1), associated with irrigation frequencies (daily and alternated), plus two additional treatments to evaluate container volume (0.75 and 1.30 dm3), distributed in blocks. The evaluations were performed at 120 days after sowing. Irrigation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annona squamosa; Volume of containers; Saline stress; Irrigation interval. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900610 |
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| Sousa,Mônica S. da S.; Lima,Vera L. A. de; Brito,Marcos E. B.; Silva,Luderlândio de A.; Moreira,Rômulo C. L.; Oliveira,Carlos J. A.. |
| ABSTRACT The salinity of water and soil reduces the growth and production of crops, especially the fruit trees, such as papaya. Thus, it is necessary to obtain management alternatives for cultivation under these conditions. Therefore, the objective of this study was to evaluate the growth and phytomass of papaya cultivated under irrigation with saline water and organic fertilization. An experiment was set up using a randomized block design, with the treatments distributed in a 5 x 2 factorial scheme, consisting of five levels of salinity of irrigation water (0.6, 1.2, 1.8, 2.4 and 3.0 dS m-1) and two levels of organic fertilization (10 and 20 L of bovine manure per plant), with three replications, totaling thirty experimental plots. Growth variables of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Saline stress; Organic matter. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000200079 |
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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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| 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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| Souto,Antônio G. L.; Cavalcante,Lourival F.; Gheyi,Hans R.; Nunes,Járisson C.; Oliveira,Francisco I. F.; Oresca,Denizard. |
| ABSTRACTThe response of plants to salt stress is an extremely complex phenomenon that involves morphological, physiological and biochemical changes, modifying the leaf contents of chlorophyll and carotenoids, among others and affecting plant growth, development and production. An experiment was carried out from July 2010 to June 2011, in order to evaluate the contents of chlorophyll a, chlorophyll b, total chlorophyll, carotenoids, the chlorophyll a/b ratio and biomass accumulation of shoots and roots of noni plants, when subjected to irrigation and leaching with water of increasing salinity. The experiment was carried out in a greenhouse, at the Center of Agricultural Sciences of the Federal University of Paraíba, in the municipality of Areia-PB, Brazil.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morinda citrifolia L.; Drainage; Chlorophyll; Saline stress. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001101035 |
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| Sousa,Geocleber G. de; Rodrigues,Valdécio dos S.; Soares,Stallone da C.; Damasceno,Ítalo N.; Fiusa,Jamili N.; Saraiva,Sâmara E. L.. |
| ABSTRACT Salinity is a complex phenomenon that affects the metabolic processes of the plant, changing the physiological and biochemical parameters. In this context, the objective of this study was to evaluate the effect of irrigation water salinity on growth, biomass and gas exchanges in soybean crop in soil with and without biofertilizer. The experiment was carried out in a greenhouse at the experimental area of the Agrometeorological Station of the UFC, Fortaleza, CE, Brazil, from May to June 2016. The treatments were distributed in randomized blocks in a 5 × 2 factorial scheme, corresponding to the levels of irrigation water salinity: 0.8; 1.6; 2.4; 3.2 and 4.0 dS m-1, in soil without and with bovine biofertilizer, in five replicates. The following... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilizer; Saline stress; Photosynthesis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900604 |
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| Carneiro,Paulo Torres; Fernandes,Pedro Dantas; Gheyi,Hans Raj; Soares,Frederico Antônio Loureiro; Viana,Sergio Batista Assis. |
| The cashew crop (Anacardium occiedentale L.) is of great economic and social importance for Northeast Brazil, a region usually affected by water and soil salinity. The present study was conducted in a greenhouse to evaluate the effects of four salinity levels established through electrical conductivity of irrigation water (ECw: 0.7, 1.4, 2.1 and 2.8 dS m-1, at 25ºC), on growth and physiological indexes of five rootstocks of dwarf-precocious cashew varieties CCP06, CCP09, CCP1001, EMBRAPA50, and EMBRAPA51. Plant height, leaf area, dry weight of root, shoot and total; water content of leaves, root/shoot ratio, leaf area ratio, absolute and relative growth rates and rate of net assimilation were evaluated. The majority of the evaluated variables were found to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anacardium occidentale; Electrical conductivity; Clones; Saline stress. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000100002 |
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| Harter,Fabio Schaun; Harter,Leticia dos Santos Holbig; Meneghello,Geri Eduardo. |
| ABSTRACT: In the present study, the objective was to evaluate the production and quality of rice seeds of four cultivars under conditions of saline stress caused by irrigation water. The work was carried out at the EliseuMaciel Agronomy College of the Universidade Federal de Pelotas, with four rice cultivars, IRGA 417, Avaxi CL, Inov CL and IAS 12-9 (Formosa). In the experiment, the following saline concentrations were used: 0; 12.5; 25; 37.5; 50; 75 and 100mM. After completing the crop cycle, the following agronomic characteristics were evaluated in each of the plants: number of panicles, total weight of panicles, percentage of full seeds, percentage of seedlings and weight of a thousand seeds. The physiological quality of the seeds harvested from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa L.; Saline stress; Physiological quality; Agronomic characteristic.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900250 |
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| Registros recuperados: 13 | |
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