Produção de girassol ornamental com uso de águas salobras em sistema hidropônico NFT

Maciel, Marlo P; Soares, Tales Miler; Gheyi, Hans Raj; Rezende, Emerson P. L; Oliveira, Greice Ximena Santos

doi:10.1590/s1415-43662012000200006

Cited by 34 publications

(30 citation statements)

References 25 publications

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“…According to Furlani (1999), pH values from 4.5 to 7.5 do not affect plant development in hydroponic systems. The pH values of the nutrient solution observed in this study agree with those found by Maciel et al (2012), who studied ornamental sunflower production in NFT hydroponic system under different salinity levels.…”

Section: Resultssupporting

confidence: 90%

Lettuce growth and water consumption in NFT hydroponic system using brackish water

Soares

Silva

et al. 2015

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe qualitative aspects of water, such as the preparation or replenishment of the nutrient solution, are critical to the success of hydroponic crops. Therefore, the aim of this study was to evaluate the behavior of "Americana" lettuce (cv. Tainá) under increasing levels of saline stress (0.2 -control, 1.2, 2.2, 3.2, 4.2 and 5.2 dS m -1 ), replenishing the evapotranspiration with brackish water in Experiment I and supply water (0.2 dS m -1 ) in Experiment II, both used in the preparation of the nutrient solution. In both experiments, the treatments were arranged in a randomized block design, with six treatments and four replicates. Shoot fresh matter, shoot dry matter and leaf area in Experiment I suffered reductions of 15.22, 12.67 and 15.6% per unit increase of EC, respectively. In Experiment II, reductions of 8.01, 6.90 and 8.14% were observed for the same variables, respectively. In Experiments I and II, linear decrease in water consumption due to the increase in salinity was observed, with reductions of 8.83 and 5.63% for each unit increase of electrical conductivity of water when the evapotranspiration was replenished using brackish and supply water, respectively.Crescimento e consumo hídrico de alface americana cultivada com águas salobras em sistema hidropônico R E S U M O Os aspectos qualitativos da água quanto ao preparo ou reposição da solução nutritiva são fundamentais para o sucesso de cultivos hidropônicos. Portanto, o objetivo do presente trabalho foi avaliar o comportamento da alface americana (cv. Tainá) sob níveis crescentes de estresse salino (0,2 -testemunha, 1,2, 2,2, 3,2, 4,2 e 5,2 dS m -1 ) com reposição da lâmina evapotranspirada usando a água salobra utilizada no preparo da solução no Experimento I ou com água de abastecimento (0,2 dS m -1 ) no Experimento II. Em ambos os experimentos os tratamentos foram distribuídos em um delineamento experimental em blocos ao acaso com seis tratamentos e com quatro repetições. As massas fresca e seca da parte aérea e a área foliar no Experimento I sofreram reduções de 15,22, 12,67 e 15,6%, por incremento unitário da condutividade elétrica, respectivamente. No Experimento II foram constatadas reduções de 8,01, 6,90 e 8,14%, para as massas fresca e seca da parte aérea e área foliar, respectivamente. Verificou-se, nos Experimentos I e II, diminuição linear do consumo hídrico em função do aumento da salinidade, com reduções percentuais de 8,83 e 5,63% por incremento unitário da condutividade elétrica da água utilizada no preparo da solução nutritiva, nas resposição com águas salobra e doce, respectivamente.

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Section: Resultssupporting

confidence: 90%

Lettuce growth and water consumption in NFT hydroponic system using brackish water

Soares

Silva

et al. 2015

Rev. bras. eng. agríc. ambient.

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“…The pH of the nutrient solution in Experiment I (Figure 2A) and Experiment II ( Figure 2B) remained in a range in which most of the nutrients are adequately available to plants, since the pH ranging from 5.5 to 6.5 does not influence negatively most cultures (MACIEL et al 2012). According to Furlani et al (1999), pH ranging from 4.5 to 7.5 does not compromise the plant growth in hydroponic systems, however, under acidic condition (below 4.0) may compromise the integrity of the cell membrane.…”

Section: Resultads and Discussionmentioning

confidence: 99%

Mineral Nutrition of Crisphead Lettuce Grown in a Hydroponic System With Brackish Water

Soares

Silva

et al. 2016

Rev. Caatinga

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-Water availability in the Brazilian semiarid is restricted and often the only water source available has high salt concentrations. Hydroponics allows using these waters for production of various crops, including vegetables, however, the water salinity can cause nutritional disorders. Thus, two experiments were conducted in a greenhouse at the Department of Agricultural Engineering of the Federal Rural University of Pernambuco, to evaluate the effects of salinity on the mineral nutrition of crisphead lettuce, cultivar Taina, in a hydroponic system (Nutrient Film Technique), using brackish water in the nutrient solution, which was prepared by adding NaCl to the local water (0.2 dS m -1 ). A randomized blocks experimental design was used in both experiments. The treatments consisted of water of different salinity levels (0.2, 1.2, 2.2, 3.2, 4.2 and 5.2 dS m -1 ) with four replications, totaling 24 plots for each experiment. The water added to compensate for the waterdepth loss due to evapotranspiration (WCET) was the brackish water of each treatment in Experiment I and the local water without modifications in Experiment II. The increase in the salinity of the water used for the nutrient solution preparation reduced the foliar phosphorus and potassium contents and increased the chloride and sodium contents, regardless of the WCET. Foliar nitrogen, calcium, magnesium and sulfur contents were not affected by increasing the water salinity used for the nutrient solution preparation.Keywords: Lactuca sativa L. Salinity. Horticulture. NUTRIÇÃO MINERAL DE ALFACE AMERICANA EM CULTIVO HIDROPÔNICO COM ÁGUAS SALOBRASResumo -No semiárido brasileiro a disponibilidade hídrica é restrita e muitas vezes a única fonte de água disponível possui altas concentrações de sais. A hidroponia permite o uso dessas águas para a produção de diversas culturas, dentre elas as hortaliças, entretanto, a salinidade pode ocasionar distúrbios nutricionais. Diante disso, foram conduzidos dois experimentos em ambiente protegido no Departamento de Engenharia Agrícola da Universidade Federal Rural de Pernambuco, objetivando-se avaliar os efeitos da salinidade sobre a nutrição mineral da alface americana cv. Tainá em sistema hidropônico Nutrient Film Technique (NFT), utilizando águas salobras no preparo da solução nutritiva, sendo essas águas obtidas pela adição de NaCl a água de abastecimento local (0,2 dS m -1 ), e a reposição da lâmina evapotranspirada realizada usando a respectiva água salobra utilizada no preparo da solução no Experimento I e, com água de abastecimento local no Experimento II. Para ambos os experimentos o delineamento experimental utilizado foi o de blocos ao acaso com seis tratamentos (0,2; 1,2; 2,2; 3,2; 4,2 e 5,2 dS m -1 ), e quatro repetições, totalizando 24 parcelas experimentais para cada experimento. O aumento da salinidade da água utilizada no preparo da solução nutritiva, independente da estratégia de reposição da lâmina evapotranspirada, proporcionou redução nos teores foliares de fósforo e potássio e aumento nos ...

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“…In turn, ornamental sunflower crops of 'Moonbright' and 'Sunbeam' tolerate water with up to 10.9 dS m -1 conductivity (Grieve & Poss, 2010). Furthermore, Maciel et al (2012) observed the same commercial value for stems of 'Red Sun' sunflower grown in hydroponic solution up to 16.36 dS m -1 . This fact led to the idea of carrying out field tests with the use of brackish water in the production of cut flowers.…”

Section: Introductionmentioning

confidence: 75%

“…These effects on plant performance may have been due to the accumulation of salts in the soil profile, especially exchangeable sodium. However, an occasional reduction of shoot growth and biomass production does not necessarily imply a loss of commercial value of sunflower stems (Maciel et al, 2012;Oliveira et al, 2014). The strong growth of shoots is undesirable for ornamental plants, and there is a preference for ornamental sunflowers with small heads measuring less than 15 cm of diameter (Carrillo-Ávila et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Production of ornamental sunflower irrigated with oilfield produced water in the Brazilian semiarid region

Weber

Crisóstomo

Miranda

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effects of irrigation with oilfield produced water on the concentration of some soil nutrients, as well as on the performance and concentration of nutrients in the roots and on aerial parts of the ornamental sunflower 'Sunbright' (Helianthus annuus), and to define the operating costs for the production of floral stems under an irrigated system. 'Sunbright' sunflower plants were cultivated in a Typic Quartzipsamment in the state of Ceará, Brazil, and subjected to drip irrigation treatments with oilfield produced water treated by filtration (PWF), or by reverse osmosis (PWO), besides a control treatment with groundwater (GW) from the Açu aquifer. The study was carried out for three successive production cycles. Irrigation with PWF modifies the concentration of exchangeable salts in the soil, increasing Na + in the shallow layers, affecting the vegetative growth and the nutrient accumulation in the roots and shoots, in such a way that brackish water may impact operating costs and revenues in the production of floral stems. PWO has a minor effect on soil nutrients and it is not able to modify the agronomic performance of the ornamental sunflowers, in comparison with irrigation with GW. The cost-benefit ratio was positive with all types of water in the following order: GW> PWF> PWO.Index terms: Helianthus annuus, cut flower, irrigation, resource use efficiency, wastewater reuse. Produção de girassol ornamental irrigado com água produzida de petróleo na região do Semiárido brasileiroResumo -O objetivo deste trabalho foi avaliar os efeitos da irrigação com água produzida de campos de petróleo sobre a concentração de alguns nutrientes do solo, assim como sobre o desempenho e a concentração de nutrientes nas raízes e nas partes aéreas do girassol (Helianthus annuus) ornamental 'Sunbright', e definir os custos operacionais para a produção de hastes florais em um sistema irrigado. As plantas de girassol 'Sunbright' foram cultivadas em um Neossolo Quartzarênico no Estado do Ceará, e submetidas a tratamentos de irrigação por gotejamento, com água produzida de petróleo tratada por filtração (PWF) e por osmose inversa (PWO), além de um tratamento-controle com água subterrânea (GW) do aquífero Açu. O estudo foi realizado por três ciclos de produção sucessivos. A irrigação com PWF modifica a concentração de sais trocáveis no solo, ao aumentar o Na + nas camadas superficiais, o que afeta o crescimento vegetativo e o acúmulo de nutrientes nas raízes e nas partes aéreas das plantas, de modo que a água salobra pode impactar os custos operacionais e as receitas na produção de hastes florais. PWO tem um efeito menor em nutrientes do solo e não é capaz de modificar o desempenho agronômico dos girassóis ornamentais, em comparação à irrigação com GW. A relação custo-benefício foi positiva com todos os tipos de água, na seguinte ordem: GW> PWF> PWO.Termos para indexação: Helianthus annuus, flor de corte, irrigação, uso eficiente de recurso, reuso de água residuária.

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Produção de girassol ornamental com uso de águas salobras em sistema hidropônico NFT

Cited by 34 publications

References 25 publications

Lettuce growth and water consumption in NFT hydroponic system using brackish water

Lettuce growth and water consumption in NFT hydroponic system using brackish water

Mineral Nutrition of Crisphead Lettuce Grown in a Hydroponic System With Brackish Water

Production of ornamental sunflower irrigated with oilfield produced water in the Brazilian semiarid region

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