The use of seawater in horticulture is underestimated. Although pure seawater is harm-ful to most living plants, diluted seawater could represent a promising integration to meet the crop’s nutrient and water requirements. In the current trial, we compared the effects of moderate and high concentrations of seawater and a comparable NaCl solution on a salt-tolerant (Tetragonia tetragonioides) and a salt-sensitive (Lactuca sativa) crop grown in hydroponics. We tested the hy-pothesis that, due to its mineral composition, diluted seawater would result in a less stressful growing medium than NaCl. We observed that diluted seawater resulted in a less detrimental growing medium compared to an EC-comparable NaCl solution, with remarkable differences between the salt-tolerant and the salt-sensitive species. While the growth rates in Tetragonia did not vary between the two types of stress, diluted seawater led to a higher FW and DW biomass yield in the salt-sensitive lettuce compared to the NaCl treatment. Moreover, NaCl reduced the water consumption and water productivity in Tetragonia. In lettuce, NaCl-treated plants demonstrated lower water use efficiency and water productivity compared to the EC-comparable seawater treatment. Physiological parameters and the concentration of mineral elements, phenolics and proline also demonstrated that, due to different mineral composition, seawater is a less stressful growing medium compared to a NaCl solution at comparable EC.

Guidi Nissim, W., Masi, E., Pandolfi, C., Mancuso, S., Atzori, G. (2021). The response of halophyte (Tetragonia tetragonioides (Pallas) Kuntz) and glycophyte (Lactuca sativa L.) crops to diluted seawater and NaCl solutions: a comparison between two salinity stress types. APPLIED SCIENCES, 11(14) [10.3390/app11146336].

The response of halophyte (Tetragonia tetragonioides (Pallas) Kuntz) and glycophyte (Lactuca sativa L.) crops to diluted seawater and NaCl solutions: a comparison between two salinity stress types

Guidi Nissim W;
2021

Abstract

The use of seawater in horticulture is underestimated. Although pure seawater is harm-ful to most living plants, diluted seawater could represent a promising integration to meet the crop’s nutrient and water requirements. In the current trial, we compared the effects of moderate and high concentrations of seawater and a comparable NaCl solution on a salt-tolerant (Tetragonia tetragonioides) and a salt-sensitive (Lactuca sativa) crop grown in hydroponics. We tested the hy-pothesis that, due to its mineral composition, diluted seawater would result in a less stressful growing medium than NaCl. We observed that diluted seawater resulted in a less detrimental growing medium compared to an EC-comparable NaCl solution, with remarkable differences between the salt-tolerant and the salt-sensitive species. While the growth rates in Tetragonia did not vary between the two types of stress, diluted seawater led to a higher FW and DW biomass yield in the salt-sensitive lettuce compared to the NaCl treatment. Moreover, NaCl reduced the water consumption and water productivity in Tetragonia. In lettuce, NaCl-treated plants demonstrated lower water use efficiency and water productivity compared to the EC-comparable seawater treatment. Physiological parameters and the concentration of mineral elements, phenolics and proline also demonstrated that, due to different mineral composition, seawater is a less stressful growing medium compared to a NaCl solution at comparable EC.
Articolo in rivista - Articolo scientifico
Hydroponics; Lettuce; NaCl salt stress; New Zealand spinach; Saline agriculture; Salt stress; Salt tolerance; Seawater irrigation; Seawater salt stress;
English
Guidi Nissim, W., Masi, E., Pandolfi, C., Mancuso, S., Atzori, G. (2021). The response of halophyte (Tetragonia tetragonioides (Pallas) Kuntz) and glycophyte (Lactuca sativa L.) crops to diluted seawater and NaCl solutions: a comparison between two salinity stress types. APPLIED SCIENCES, 11(14) [10.3390/app11146336].
Guidi Nissim, W; Masi, E; Pandolfi, C; Mancuso, S; Atzori, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/357757
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