Produção hidropônica de alface em solução nutritiva com e sem silício

Luz, José Magno Queiroz; Guimarães, Silése T M R; Korndörfer, Gaspar Henrique

doi:10.1590/s0102-05362006000300005

Cited by 39 publications

(26 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…the leaf epidermis near the guard cells of stomata. Similar results to those found for coffee in this work were found by Luz et al (2006) for lettuce. The authors, however, found no significant effect on the content of Si in the roots.…”

Section: Resultssupporting

confidence: 92%

Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon addition

Cunha

Oliveira²,

Caballero

et al. 2012

Rev. Ceres

View full text Add to dashboard Cite

RESUMO Crescimento e absorção de nutrientes pelo cafeeiro cultivado em solução nutritiva com e sem adição de silícioA adubação silicatada do cafeeiro promove alteração da nutrição da planta e de seu crescimento. Assim, a determinação da absorção de silício e sua influência na absorção de macro e micronutrientes pelas plantas são essenciais para avaliar as implicações deste elemento na fisiologia vegetal, bem como no manejo adequado da cultura. O objetivo deste trabalho foi avaliar a absorção de silício por plantas de café e seu efeito no crescimento e na absorção de outros nutrientes. A pesquisa foi conduzida em casa de vegetação do Departamento de Fitotecnia da Universidade Federal de Viçosa, em Viçosa, Minas Gerais, Brasil. O delineamento utilizado foi o inteiramente casualizado, com dois tratamentos (com e sem adição de silício) e três repetições, cada uma delas composta por três plantas. Foram retiradas alíquotas, a cada três dias, das soluções nutritivas e avaliadas as quantidades de silício e potássio absorvidas, bem como o consumo de água por plantas de café, além da concentração de OH -na solução nutritiva. Ao final de 33 dias, as plantas foram avaliadas quanto à massa de matéria fresca e seca de folhas, raízes e caule; altura da parte aérea e comprimento Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon additionIn recent years, the application of silicon (Si) in crops, including coffee, has become a common practice. The objective of this study was to assess the silicon uptake by coffee seedlings and its effects on plant growth, water and macro and micronutrient uptake. The research was conducted using nutrient solution in a greenhouse at the Departamento de Fitotecnia da Universidade Federal de Viçosa, in a completely randomized design with two treatments (with and without silicon) and three replications. Each plot consisted of three plants grown in a 800 mL vessel containing the treatment solutions. At every three days, water consumption, the concentration of OH -and the depletion of Si and K were assessed in the nutrient solutions. After 33 days, the plants were assessed with regard to their fresh and dry weight of leaves, roots and stem, shoot height and total length of the plant (shoot and root). Number of leaves and internodes, and the content and accumulation of silicon, macro, and micronutrients were also determined. The consumption of water, the amount of potassium uptake and, biomass accumulation were greater in plants grown in solution without silicon addition. However, the concentration of OH -in the solution and the amount of silicon uptake were greater in plants grown in solution with added silicon. Silicon accumulation was greater in leaves than in stem and roots. Silicon decreased coffee plant accumulation of phosphorus, potassium, calcium, zinc, copper and iron.

show abstract

Section: Resultssupporting

confidence: 92%

Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon addition

Cunha

Oliveira²,

Caballero

et al. 2012

Rev. Ceres

View full text Add to dashboard Cite

show abstract

“…In comparison to the literature, the mean CD observed in the present study, which was equal to 29.97 cm (Table 2), is higher than that cited by Luz et al (2006), who worked with the hydroponic system using the solution of Furlani and found means of 28.02 cm. However, this difference can be associated with the high temperatures recorded in the cultivation environment, because these authors obtained a mean higher than that of the present study.…”

Section: Resultscontrasting

confidence: 91%

Growth of hydroponic lettuce with optimized mineral and organomineral nutrient solutions

Filho

Azevedo

et al. 2017

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

A B S T R A C TThe objective of this study was to evaluate the growth of crisp lettuce in hydroponic cultivation, following the nutrient film technique (NFT), using optimized mineral and organomineral nutrient solutions. The experiment was set in 8 x 3 factorial scheme, with treatments distributed in randomized blocks and split plots, with three replicates. The plots corresponded to eight nutrient solutions, of which four were mineral solutions with chemical composition suggested by Bernardes, Furlani, Castellane & Araújo and Ueda, and four were organomineral solutions, suggested by this research with chemical composition similar to those of the previously mentioned mineral solutions. The subplots corresponded to three varieties of crisp lettuce: Thaís, Vanda and Verônica. At 25 days after transplanting, the following parameters were evaluated: stem and crown diameter, root length, leaf area and number of leaves. For stem and crown diameters and number of leaves, the mineral solutions promoted the highest means. The mineral solution of Furlani and the organomineral solutions, except the modified solution of Castellane & Araújo, promoted the greatest root lengths. The smallest leaf area was obtained in the organomineral solution of Ueda. The cultivar Verônica had the highest root length and stem diameter.Crescimento da alface hidropônica cultivada com soluções nutritivas minerais e organominerais otimizadas R E S U M O Objetivou-se, neste trabalho, avaliar o crescimento da alface crespa em cultivo hidropônico, seguindo a técnica do fluxo laminar de nutrientes (NFT), utilizando soluções nutritivas minerais e organominerais otimizadas. Instalou-se um experimento em blocos casualizados com o uso de parcelas subdivididas, com três repetições. As parcelas corresponderam a oito soluções nutritivas, sendo quatro minerais com composição química sugeridas por Bernardes, Furlani, Castellane & Araújo e Ueda e quatro organominerais, sugeridas nesta pesquisa com composição química semelhante às soluções minerais, anteriormente citadas. As subparcelas corresponderam a três cultivares da alface crespa (Thaís, Vanda e Verônica). Aos 25 dias após o transplantio das mudas avaliaram-se as variáveis diâmetro do caule e da coroa, comprimento da raiz, área foliar e número de folhas. Para os diâmetros da coroa e do caule e número de folhas, as soluções minerais promoveram as maiores médias. A solução mineral de Furlani e as soluções organominerais, exceto a de Castellane & Araújo modificada, promoveram os maiores comprimentos de raízes; a menor área foliar foi obtida pela solução organomineral de Ueda. A cultivar Verônica apresentou os maiores comprimento de raiz e diâmetro caulinar.

show abstract

“…The concentrations of 0.55 and 0.83 g silicon pot -1 resulted in a higher silicon content in the root compared to the other treatments, and the 0.28 g silicon pot -1 treatment showed silicon content higher than observed in the control. The presence of silicon in the control can be explained by the abundance of silicon in nature, where it is ubiquitous and is found even in water (Luz et al, 2006).…”

Section: Silicon Concentrationmentioning

confidence: 99%

<b>Effects of silicon on the growth and genetic stability of passion fruit

et al. 2016

View full text Add to dashboard Cite

ABSTRACT. The objective of this study was to determine the silicon concentration that would provide good growth in passion fruit plants. Passion fruit seeds were sown in polystyrene. After 60 days, when they were approximately 15 cm tall, the plants were transplanted into polyethylene pots containing 1.1 kg Tropstrato® substrate. Treatments consisted of four concentrations (0, 0.28, 0.55, and 0.83 g pot -1 ) of silicon applied as a silicic acid solution 1%. This solution was applied around the stem of the plants (drenched), with the first application being administered 15 days after transplanting. In total, three applications were made at intervals of 15 days. After the last application, the plants were subjected to chemical analysis to determine the silicon concentration and to X-ray microanalysis and flow cytometry. Phytotechnical analyses were performed during the applications. The use of silicon in concentrations of 0.28 and 0.55 g pot -1 provides better growth of the passion fruit, and the absorption and deposition of the silicon in the passion fruit leaves are proportional to the availability of this element in the plant. The roots of the passion fruit plant are silicon accumulators, and the DNA stability and amount are preserved in the silicon-treated passion fruit plants. ) de silício, na forma de solução de ácido silícico a 1%. Esta solução foi aplicada ao redor do caule das plantas (drench), sendo a primeira aplicação realizada 15 dias após o transplantio das plantas. No total, foram realizadas três aplicações, em intervalos de 15 dias. Após a última aplicação, as plantas foram submetidas à análise química de concentração de silício, microanálise de raios-X e citometria de fluxo. As análises fitotécnicas foram realizadas no decorrer das aplicações. O uso do silício nas concentrações 0,28 e 0,55 g vaso -1 , proporciona melhor crescimento das plantas de maracujazeiro, a absorção de silício e sua deposição nas folhas de maracujazeiro são proporcionais à disponibilidade desse elemento para a planta, o maracujazeiro é uma planta acumuladora de silício nas raízes e a estabilidade da quantidade de DNA é preservada nas plantas de maracujazeiro tratadas com silício.Palavras-chave: citometria de fluxo, ácido silícico, Passiflora edulis.

show abstract

Produção hidropônica de alface em solução nutritiva com e sem silício

Cited by 39 publications

References 5 publications

Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon addition

Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon addition

Growth of hydroponic lettuce with optimized mineral and organomineral nutrient solutions

<b>Effects of silicon on the growth and genetic stability of passion fruit

Contact Info

Product

Resources

About