Accumulation of cations in lettuce cultivars under low-cost hydroponic system with brackish waters

Silva, Anna C. R. A. da; Silva, Gerônimo Ferreira da; Menezes, Sirleide Maria de; Cruz, Ruana I. F.; Júnior, José Amilton Santos; Rolim, Mário M.

doi:10.1590/1807-1929/agriambi.v25n12p833-839

Cited by 3 publications

(3 citation statements)

References 16 publications

(15 reference statements)

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“…These results are in accordance with the studies carried out by Muchecua et al (2022) working with parsley crop under salt stress. Other authors (Soares et al, 2016;Silva et al, 2021a) also observed a reduction in Mg 2+ uptake under salt stress conditions.…”

Section: Magnesiummentioning

confidence: 74%

“…Other authors, studying some leafy plants in hydroponic system, also Mineral nutrition and hydroponic kale production under saline stress and calcium nitrate verified a reduction in calcium contents in response to salt stress, such as lettuce (Silva et al, 2021a) and parsley (Muchecua et al, 2022). The increase of calcium contents in S3 can be explained by a greater availability of Ca 2+ in the nutrient solution, increasing an availability of this nutrient and favoring its uptake to the detriment of Na + uptake, since this nutrient shows antagonistic interaction (Marschner, 2012).…”

Section: Calciummentioning

confidence: 89%

“…Nevertheless, current researches on hydroponic cultivation, show that this kind of growing allows early harvest and the leaves show the same organoleptic qualities, such as aroma, sweet and bitter tastes, and crunchiness, comparing with the leaves produced under conventional system (Silva et al, 2021b). Some authors (Soares et al, 2016;Silva et al, 2021a;Muchecua et al, 2022) have verified that some plants grown under saline stress, especially in environments rich in sodium (Na + ) and chlorine (Cl -) ions, may present nutritional imbalance caused by an increased absorption of Na + and Cl -, to the detriment of nitrogen absorption (NO 3 -), potassium (K + ), calcium (Ca 2+ ) and magnesium (Mg 2+ ).…”

Section: Introductionmentioning

confidence: 99%

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Mineral nutrition and hydroponic kale production under saline stress and calcium nitrate

Oliveira,

Silva,

Santos

et al. 2023

Hortic. Bras.

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An adequate use of brackish water in agricultural production is one of the main challenges for researchers and rural producers, since saline stress may cause physiological and nutritional changes in plants, affecting the crop yield. An appropriate mineral nutrition is essential for plants, grown under saline stress, to express their productive potential. The aim of this study was to evaluate the mineral nutrition and hydroponic kale production under saline stress and calcium nitrate. The experiment was carried out using one hydroponic system in substrate, following a randomized block design, with five treatments and four replicates. The treatments consisted of five nutrient solutions, with a control treatment {S1 = standard nutrient solution using low salinity water, 0.5 dS/m [750 mg/L of Ca(NO3)2]}, and four nutrient solutions prepared using brackish water (6.0 dS/m) containing four concentrations of Ca(NO3)2 (S2 = 750 mg/L, S3 = 1,125 mg/L, S4 = 1,500 mg/L, S5 = 1,875 mg/L). We determined the levels of N, P, K, Ca, Mg and S in leaf tissue at three evaluation times (50, 64 and 78 DAT). Mineral levels in the leaves, stem and root were also evaluated at the end of the experiment (100 DAT). In addition, leaf production and the agronomic efficiency of Ca(NO3)2 were verified. The highest leaf production (1780 g/plant) and agronomic efficiency [2.37 g fresh matter/mg of Ca(NO3)2] were obtained in the standard nutrient solution, and both were reduced at 55.6% by salinity. The extra addition of 50% Ca(NO3)2 in the saline nutrient solution reduced the effect of salinity on Mg absorption and the effect of NaCl addition on kale production.

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Section: Magnesiummentioning

confidence: 74%

Section: Calciummentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Mineral nutrition and hydroponic kale production under saline stress and calcium nitrate

Oliveira,

Silva,

Santos

et al. 2023

Hortic. Bras.

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Growth and yield of cauliflower with brackish waters under hydroponic conditions

Silva

Costa

Soares

et al. 2023

Rev. bras. eng. agríc. ambient.

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Historically, and in the aggravating climate change scenario, droughts are increasingly severe in arid and semi-arid regions, limiting the use of irrigation. As an alternative for these regions, brackish waters have been used, despite the severe risks of soil salinization, as well as losses in crop production and quality. Thus, the adoption of adequate technologies should mitigate or control the impacts caused by salt stress. Therefore, in the present study two experiments were conducted to evaluate the cultivation of cauliflower with brackish waters using a nutrient film technique (NFT) hydroponic system from July to October 2019 (winter-spring) and from October 2019 to January 2020 (spring-summer). Cauliflower plants were subjected to six values of ECw: 0.3 - control (without NaCl), 1.5, 2.5, 3.5, 4.5, and 5.5 dS m-1 (with NaCl), in a randomized block design with six replicates. For the leaf blade area at inflorescence harvest, reductions per dS m-1 increment in ECw of 7.22 and 6.41% were found in the winter-spring and spring-summer experiments, respectively. The quality losses of cauliflower inflorescences were more pronounced in the spring-summer experiment, varying according to the ECw used. Therefore, it is possible to grow cauliflower hydroponically under ECw of up to 5.5 dS m-1; however, in the hottest seasons these waters should be reserved and used only for the preparation of nutrient solutions or replacement of water consumed by plants.

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Water Efficiency of Coriander under Flows of Application of Nutritive Solutions Prepared in Brackish Waters

Bezerra

Júnior

Pessoa

et al. 2022

Water

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The impact of the salinity of the nutrient solution on water efficiency can be changed by the application flow. The aim of this work was to analyze the water efficiency and production components of coriander plants, cultivar Verdão, exposed to nutrient solutions (1.7, 3.0, 4.5, and 6.0 dS m−1) applied with different flow rates (1.0, 2.0, 3,0, and 4.0 L min−1) in an NFT hydroponic system. Two experiments were carried out in a greenhouse with two sources of salts to prepare the electrical conductivity. In the first experiment, NaCl was used, and CaCl2·2H2O was used in the second. Variables were analyzed related to the production components and the consumption of water use efficiency. It was found that the water efficiency and production components of coriander plants were more affected by increases in electrical conductivity in the nutrient solution. CaCl2·2H2O better promotes the lower production of dry mass, plant height, water consumption, and the instantaneous and intrinsic efficiency of water use than NaCl. The coriander’s water relations were inhibited by increases in the concentration of salts in nutrient solution, while increases in the flow rate of the nutrient solution negatively affected the productive parameters of the coriander plants.

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Accumulation of cations in lettuce cultivars under low-cost hydroponic system with brackish waters

Cited by 3 publications

References 16 publications

Mineral nutrition and hydroponic kale production under saline stress and calcium nitrate

Mineral nutrition and hydroponic kale production under saline stress and calcium nitrate

Growth and yield of cauliflower with brackish waters under hydroponic conditions

Water Efficiency of Coriander under Flows of Application of Nutritive Solutions Prepared in Brackish Waters

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