Reposição de nutrientes em solução nutritiva para o cultivo hidropônico de alface

Backes, Fernanda Alice Antonello Londero; Santos, Osmar Souza dos; Pilau, Felipe Gustavo; Bonnecarrère, Reinaldo Antonio Garcia; Medeiros, Sandro Luís Petter; Fagan, Evandro Binotto

doi:10.1590/s0103-84782004000500013

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…Agríc. Ambiental, v.18, n.4, p.417-424, 2014. esta observação Backes et al (2004) verificaram resultados semelhantes. Os maiores decréscimos no valor da condutividade elétrica só foram observados após o 19° dia, isto porque a partir dos 21 dias após transplantio, ocorre um acúmulo maior de matéria seca na planta decorrente da maior absorção de nutrientes e, em contrapartida, diminuição da CE da solução nutritiva (Beninni et al, 2005).…”

Section: Resultsunclassified

Cultivo hidropônico de cultivares de alface em soluções nutritivas organominerais otimizadas com a ferramenta SOLVER

Filho

Pereira²,

Azevedo³

et al. 2014

Rev. bras. eng. agríc. ambient.

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R E S U M OObjetivou-se, com este trabalho, avaliar o cultivo de cultivares de alface em sistema hidropônico tipo floating com soluções nutritivas otimizadas pela ferramenta SOLVER, do Microsoft Office Excel. O experimento foi conduzido no Centro de Ciências Agrárias e Ambientais da Universidade Estadual da Paraíba adotando-se o delineamento experimental inteiramente casualizado disposto em esquema fatorial 4 x 3, com três repetições. Os fatores foram 4 soluções nutritivas (S1 = 100% de solução mineral; S2 = 90% de solução mineral + 10% de solução orgânica; S3 = 84% de solução mineral + 16% de solução orgânica e S4 = 78% de solução mineral + 22% de solução orgânica) e 3 cultivares de alface (C1 -Crespa; C2 -Manteiga e C3 -Rubi). Avaliaram-se a altura da planta, o diâmetro caulinar, o número de folhas, o comprimento da raiz, a massa da matéria fresca e a massa da matéria seca da alface. As soluções organominerais promoveram uma resistência maior à variação do pH e substituíram parcialmente a solução mineral. As melhores médias biométricas e de produção ocorreram para as cultivares Crespa e Manteiga e para as soluções mineral, mineral + 10% de solução orgânica e mineral + 22% de solução orgânica. Hydroponic cultivation of lettuce varieties under optimized organominerals nutrient solution with the SOLVER A B S T R A C TThe study aimed to evaluate the cultivation of lettuce varieties in floating type hydroponic system with nutrient solutions optimized by the SOLVER tool of the Microsoft Office Excel. The experiment was conducted at the Center of Environmental and Agricultural Sciences Center of the Paraíba State University, adopting an entirely randomized experimental design arranged in factorial scheme 4 x 3, with three repetitions. The factors were 4 nutritient solutions (S1 = 100% mineral solution; S2 = 90% mineral solution + 10% organic solution; S3 = 84% mineral solution + 16% organic solution and S4 = 78% mineral solution + 22% organic solution) and 3 lettuce varieties (C1 -Crespa; C2 -Monteiga and C3 -Ruby). The plant height, stem diameter, number of leaves, the length of the root, fresh matter weight and the dry matter weight of the lettuce were evaluated. The organominerals solutions promoted a greater resistance to variation of the pH and replaced partially the mineral solution. The best biometric and production means were observed for the Crespa and Monteiga varieties and for the mineral solution, mineral solution + 10% of organic solution and mineral solution + 22% of organic solution. Palavras-chave:Lactuca sativa L. fertilizante otimização

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Section: Resultsunclassified

Cultivo hidropônico de cultivares de alface em soluções nutritivas organominerais otimizadas com a ferramenta SOLVER

Filho

Pereira²,

Azevedo³

et al. 2014

Rev. bras. eng. agríc. ambient.

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“…As expected, nutrient solution pH varied throughout the experiment since solutions have no buffering capacity (Backes et al, 2004). However, the values were maintained from 5.45 to 6.75 for the best plant growth (Castellane and Araújo, 1995).…”

Section: Stage -1mentioning

confidence: 61%

Macronutrient cycling in hydroponic lettuce cultivation

Macedo¹,

Lopes²,

Lopes³

et al. 2022

Rev. ambiente água

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In order to address issues of limited resources and contamination by fertilizers, nutrient solutions may be reused in hydroponics as an alternative to their disposal in the environment. This work evaluated the feasibility of nutrient replacement for the nutrient solutions reused during lettuce hydroponic cultivation. The experiment was carried out in an agricultural greenhouse in an NFT hydroponic system using the “Milena” lettuce cultivar. The experiment was divided into two stages: 1) monitoring and data collection and proposition of nutrient replacement management; and 2) validation of the proposed replacement management. Monitoring the consumption of the crop's nutritional solution in the first stage served as the basis for the proposed nutritional replacement management. Management was validated in the second stage through the evaluation of fresh and dry mass, crop nutritional status, and the amount of the fertilizer applied in the treatments: T1 - nutrient replacement with nutrient solution reuse; and T2 - nutrient replacement without nutrient solution reuse. The fresh and dry mass data and the amount of nutrients absorbed by the plants were submitted to the t-test at 5% probability, showing no significant difference between the treatments, making it possible to conclude that the nutrient solution reuse provided nutrient replacement during the lettuce crop cultivation. Keywords: hydroponic system, Lactuca sativa L., macronutrient rational use.

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“…The Nutrient Film Technique (NFT) was used for the hydroponic cultivation system. The nutritious solution was prepared according to Furlani (1998) for all treatments (Backes et al, 2004).…”

Section: Methodsmentioning

confidence: 99%

Growth Response of Hydroponic Lactuca sativa L. to Application of Fertilizer Organic VIUSID Agro®

Pordeus¹,

Moraes²,

Medeiros³

et al. 2020

JAS

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Lettuce (Lactuca sativa L.) production is a valuable crop for supporting family farms in the Brazilian semiarid region. The cultivation of this vegetable in a hydroponic system with foliar application of organic fertilizer can help in mitigating the challenges imposed by the region’s edaphoclimatic conditions. Therefore, it is important to increase the lettuce production using new technologies. VIUSID Agro® is an example of such technology that has the potential to increase lettuce yields. VIUSID Agro® is a natural compound that actives molecular processes without affecting the environment adversely. This product acts as a natural bioregulator and is basically composed of amino acids, vitamins, and minerals. The experiment’s objective was to analyze the impact of VIUSID Agro® organic fertilizer on the growth of hydroponic lettuce. The research was conducted on a family farm in Bom Jesus, Paraíba state, Brazil. The experimental was a completely randomized design with 5 VIUSID VIUSID Agro® concentrations (0.0; 0.2; 0.4; 0.6 and 0.8 mL L-1) and 15 replications. Among the indicators evaluated were the plant length, leaf number, stem diameter, root length, and fresh and dry biomass. The results showed that the 0.4 mL L-1 VIUSID Agro® concentration produced greater growth than the control (0.0 mL L-1) for variables analyzed plant length, fresh and dry biomass of aerial portion, root length, fresh and dry biomass of root. The foliar application of VIUSID Agro® improved the performance of the lettuce morphological characteristics in a hydroponic cultivation system. Although this is the first Brazil research evaluating VIUSID Agro® as an organic fertilizer in hydroponic lettuce, results have shown promise.

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Reposição de nutrientes em solução nutritiva para o cultivo hidropônico de alface

Abstract: RESUMO

Cited by 10 publications

References 2 publications

Cultivo hidropônico de cultivares de alface em soluções nutritivas organominerais otimizadas com a ferramenta SOLVER

Cultivo hidropônico de cultivares de alface em soluções nutritivas organominerais otimizadas com a ferramenta SOLVER

Macronutrient cycling in hydroponic lettuce cultivation

Growth Response of Hydroponic Lactuca sativa L. to Application of Fertilizer Organic VIUSID Agro®

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