Crescimento, Produção E Consumo Hídrico Do Quiabeiro Submetido À Salinidade Em Condições Hidropônicas

Modesto, Francisco José Nunes; Santos, Maria Ângela Cruz Macêdo dos; Soares, Tales Miler; Santos, Ellen Paula Menezes dos

doi:10.15809/irriga.2019v24n1p86-97

Cited by 11 publications

(10 citation statements)

References 13 publications

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“…Several authors reported a decrease in dry masses of leaves and stem in okra plants grown under saline stress (Ünlükara et al, 2008;Nascimento et al, 2017;Modesto et al, 2019). The differences related to the results obtained in this study comparing with the ones found in literature can be explained, partly, due to the genetic variability and to growing conditions, as in protected cultivation the plants show a lower water requirement.…”

Section: Developmentcontrasting

confidence: 52%

“…The ionic effect causes toxicity in the plant due to a high concentration of specific ions in soil and nutritional imbalance, due to the reduction in the uptake of essential elements for development (Munns & Tester, 2008;Silva et al, 2013;Flowers et al, 2015). All these characteristics can result in a lower water uptake and, consequently, nutrient uptake too, causing a reduction in photosynthesis, growth, yield and fruit quality (Taiz et al, 2017;Modesto et al, 2019).…”

Section: Resumo Suplementação Com Cálcio Nas Soluções Nutritivas Para Mitigar O Estresse Salino No Quiabeiro Fertirrigadomentioning

confidence: 99%

“…Similar results were reported by Ferreira et al (2012), showing that the saline level in irrigation water (2.5 dS m -1 ) did not affect the number of fruits and production of grains of okra cultivar Santa Cruz 47. Nevertheless, the use of water with electrical conductivity above the threshold salinity recommended for okra (1.3 dS m -1 ) results in a reduction in crop yield (Elshaikh et al, 2017;Modesto et al, 2019).…”

Section: Yieldmentioning

confidence: 99%

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Calcium supplementation in nutrient solutions to mitigate salt stress in fertigated okra

et al. 2021

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The objective of this study was to evaluate the effect of calcium supplementation on saline water as a minimizing agent of saline stress in okra cultivars. The experiment was carried out in a greenhouse in Mossoró-RN using a completely randomized experimental design in a 2x5 factorial scheme with four replications. Two okra cultivars (Santa Cruz 47 and Valença) were tested fertigated with five fertigation managements [F1= irrigation with non-saline water (0.5 dS m-1) and fertigation with a standard dose of calcium (4,733.8 mg plant-1); F2, F3, F4 and F5= irrigation with saline water (3.5 dS m-1) and fertigation with increasing doses of calcium (4,733.8; 7,100.7; 9,467.7 and 11,834.5 mg plant-1, respectively)]. Plants were collected at 120 days after emergence and evaluated for growth variables (plant height, leaf number, stem diameter, leaf dry mass, stem, fruit and total) and yield (fruit number, average length of fruits, average diameter and yield). Cultivar Santa Cruz 47 presented the highest vegetative development but cultivar Valença was earlier and presented the largest number of harvests (19), allowing more harvested fruits (27 fruits per plant) and the highest yield (659 g plant-1). The cultivars were not affected by the saline level and showed little response to extra calcium fertilization.

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Section: Developmentcontrasting

confidence: 52%

Section: Resumo Suplementação Com Cálcio Nas Soluções Nutritivas Para Mitigar O Estresse Salino No Quiabeiro Fertirrigadomentioning

confidence: 99%

Section: Yieldmentioning

confidence: 99%

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Calcium supplementation in nutrient solutions to mitigate salt stress in fertigated okra

et al. 2021

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“…These were evident from the symptoms of nutritional deficiency and toxicity and, consequently, premature senescence of the plants and reduced growth. Modesto et al (2019) reported that excess Na + resulted in symptoms that hampered the plant metabolism, such as oxidative stress of proteins, nucleic acids, and lipids and, when combined with toxicity by Cl -, resulted in reduced nutrient assimilation, plant growth, and development, leading to premature senescence. Soares et al (2016) evaluated the effect of six water salinity levels used for the preparation of the nutrient solution (0.2, 1.2, 2.2, 3.2, 4.2, and 5.2 dS m -1 ) and two strategies for replacing the evapotranspirated blade (brackish water from the respective treatment in experiment I) and (supply water [0.2 dS m -1] in experiment II).…”

Section: Resultsmentioning

confidence: 99%

Nutrient and inorganic solute (Na+ and Cl-) content in green onion plants under hydroponic cultivation using brackish water

et al. 2020

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Cultivation using brackish waters can result in nutritional and metabolic imbalances in several plant species, consequently reducing the production of dry matter (DM) and accumulation of toxic ions (Na+ and/or Cl-) in plants. We evaluated the DM production, and nutrient and inorganic solute (Na+ and Cl-) content in green onion plants (cv. Todo Ano Evergreen - Nebuka) under different levels of nutrient solution salinity in combination with circulation frequencies of this solution. Two experiments were conducted in a hydroponic system, using a completely randomized design, in a 6 × 2 factorial scheme, with five replicates: six levels of nutrient solution salinity (1.5, 3.0, 4.5, 6.0, 7.5, and 9.0 dS m-1) and two solution circulation frequencies (twice and thrice a day). In Experiment I, the evapotranspired depth was replaced using brackish water that was used to prepare each of the salinity levels (used exclusively), whereas in Experiment II, brackish water was used only to prepare each of the salinity levels and public water was used (electrical conductivity [ECw] = 0.12 dS m-1) for replacement in all treatments. The increase in the nutrient solution salinity reduced the production of DM and accumulation of nutrients; the reductions were more pronounced when brackish waters were used exclusively (Experiment I). However, the circulation of solutions thrice a day resulted in the harmful effects of the salinity effect. Replacing the evapotranspirated blade with water supply (Experiment II) mitigated the deleterious effects of salinity. Moreover, three circulations of the nutrient solution daily resulted in lower accumulation of inorganic Na+ and Cl- solutes and increased accumulation of nutrients N, P, K+, Ca2+, Mg2+, and S in the culture.

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“…The cauliflower tolerance to salt stress was evaluated individually for each cultivar, based on the relative inflorescence fresh matter yield, using the plateau model with linear decrease proposed by Maas and Hoffman (1977). The parameters of the model were adjusted by minimizing the square of errors with the Solver tool of the Microsoft Excel, as done by Modesto et al (2019).…”

Section: Methodsmentioning

confidence: 99%

Cauliflower Growth and Yield in a Hydroponic System With Brackish Water

et al. 2020

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The Brazilian semiarid is historically characterized by the water scarcity of good-quality. In this region there is great availability of groundwater reserves, however, these waters has high concentrations of dissolved salts, that makes them inappropriate to be used in the irrigation of most crops. The objective of this study was to evaluate the growth, production and salinity tolerance of three cauliflower cultivars in hydroponics NFT (Nutrient Film Technique), subjected to different electrical conductivities of the nutrient solution (ECsol) prepared with saline water. The experiment was carried out in a randomized blocks design in split-plot, with six replications. The plants were subjected to six levels of ECsol (1.94 - control, 3.24, 4.10, 5.04, 5.92 and 7.01 dS m-1) in the main plots, with three cauliflower cultivars (‘Piracicaba de Verão’, ‘Sabrina’ and ‘SF1758’) in the subplots, which were grown in the same hydroponic channel. Vegetative growth, inflorescence production and salinity tolerance of cultivars were evaluated. In general, except for the number of leaves, leaf width and fresh matters of leaves and shoot, the different ECsol levels negatively influenced the vegetative growth and inflorescences yield of cultivars cauliflower. The cultivars ‘Piracicaba de Verão’ and ‘Sabrina’ were considered moderately sensitive to salinity, while cultivar ‘SF1758’ was moderately tolerant to salinity.

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Crescimento, Produção E Consumo Hídrico Do Quiabeiro Submetido À Salinidade Em Condições Hidropônicas

Cited by 11 publications

References 13 publications

Calcium supplementation in nutrient solutions to mitigate salt stress in fertigated okra

Calcium supplementation in nutrient solutions to mitigate salt stress in fertigated okra

Nutrient and inorganic solute (Na+ and Cl-) content in green onion plants under hydroponic cultivation using brackish water

Cauliflower Growth and Yield in a Hydroponic System With Brackish Water

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