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| Santos,Alexandre Nascimento dos; Silva,Ênio Farias de França e; Silva,Gerônimo Ferreira da; Bezerra,Raphaela Revorêdo; Pedrosa,Elvira Maria Regis. |
| RESUMO Objetivou-se com este trabalho avaliar a concentração dos nutrientes no tecido foliar das plantas de tomate cereja cv. "Rita", cultivadas em sistema hidropônico utilizando água com crescentes níveis de salinidade no preparo da solução nutritiva, submetendo as plantas a diferentes tempos de exposição à salinidade e turnos de rega. O experimento foi conduzido em casa de vegetação em sistema hidropônico em vasos com substrato. O delineamento experimental foi em blocos inteiramente casualizados em esquema fatorial 6 x 2 x 2, sendo seis níveis de salinidade da solução nutritiva (3,01; 4,51; 5,94; 7,34; 8,71 e 10,40 dS m-1), dois tempos de exposição das plantas à salinidade (51 e 6 dias) e dois turnos de rega (uma irrigação por dia e uma irrigação a cada... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum mil; Semiárido; Nutrição mineral; Hidroponia. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000400576 |
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| Souza,Camila Alves de; Silva,Alexsandro Oliveira da; Santos,Jenyffer da Silva Gomes; Lacerda,Claudivan Feitosa de; Silva,Gerônimo Ferreira da. |
| ABSTRACT In view of the limitations on good quality water, the use of low-quality water in agriculture is seen as a suitable alternative. The aim of this study was to evaluate, in a protected environment, the production of broadleaf watercress in an NFT (Nutrient Film Technique) hydroponic system as a function of the use of brackish water and different circulation times for the nutrient solution. The experiment was carried out in the experimental area of UFC, in Fortaleza, Ceará, from December 2018 to March 2019 (two crop cycles). The treatments were distributed in a randomised block design in a 5 x 2 factorial scheme, five levels of water salinity (0.6, 1.6, 2.6, 3.6 and 4.6 dS m-1) and two circulation times for the nutrient solution (10 and 15 min),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nasturtium officinale; Irrigation water salinity; Vegetable. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300408 |
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| Soares,Hammady Ramalho e; Santos Júnior,José Amilton; Silva,Ênio Farias de França e; Rolim,Mário Monteiro; Silva,Gerônimo Ferreira da. |
| ABSTRACT Rationalization of brackish water management in hydroponic crops is one of the ways to expand and manage water supply in shortage areas. Thus, this work was carried out to evaluate the water and physiological relationships of Iceberg lettuce (cv. Tainá) in plants exposed to strategies of replacement of the evapotranspired volume of saline nutrient solutions. Two experiments were conducted in NFT hydroponic system, in which increasing levels of water salinity (0.2, 1.2, 2.2, 3.2, 4.2 and 5.2 dS m-1) were used to prepare the nutrient solutions. In the first experiment, the evapotranspired volume was replaced with the respective brackish water and, in the second one, with public-supply water (0.2 dS m-1). Both experiments were set up in a randomized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; Water management; Salinity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200216 |
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| Lira,Raquele Mendes de; Silva,Ênio Farias de França e; Silva,Gerônimo Ferreira da; Santos,Alexandre Nascimento dos; Rolim,Mário Monteiro. |
| ABSTRACTUnderground water reserves in the semi-arid region of Brazil are stored in the crystal formations that in large part have high concentrations of salt. However, the scarcity of this resource makes the use of this water necessary for various activities, including agriculture. The aim of this study was to evaluate the use of brackish water on the electrical conductivity and pH of the nutrient solution, and on the production, water consumption and the uptake of nutrients in Chinese cabbage (Brassica pekinensis L.) under a hydroponic system. The experimental design was completely randomised, with four replications and six levels of water salinity (0.2, 1.2, 2.2, 3.2, 4.2 and 5.2 dS m-1), obtained by adding NaCl to the local water supply, with this water... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica pekinensis L.; Nutrient solution; Salinity; Mineral nutrition. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000300497 |
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| Martins,Juliana Bezerra; Santos Júnior,José Amilton; Silva Júnior,Fernando José da; Silva,Gerônimo Ferreira da; Medeiros,Salomão de Sousa. |
| ABSTRACT Brackish waters may vary in their chemical compositions, interfering with different plant responses to stress; therefore, the present study aimed to evaluate the production components of parsley plants subjected to levels of electrical conductivity in nutrient solutions with an initial ECns of 1.58 dS m-1, which was solubilized in water with the following water electrical conductivity configurations (ECw): 0.12 (control), 1.12, 2.12, 3.12, 4.12 and 5.12 dS m-1, resulting in six isosmotic levels (ECns = 1.7, 2.7, 3.7, 4.7, 5.7 and 6.7 dS m-1) in an interaction with four types of salt: NaCl, CaCl2, MgCl2 and KCl. The experimental design was completely randomized in a factorial scheme with five replicates. Two strategies were used to restore the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Petroselinum crispum; Salinity; Cationic nature; Hydroponics.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100200 |
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