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Testing the Effect of High pH and Low Nutrient Concentration on Four Leafy Vegetables in Hydroponics
YENITZE ELIZABETH FIMBRES ACEDO
Silvia Traversari
Sonia Cacini
GIULIA COSTAMAGNA
Marco Ginepro
Daniele Massa
Acceso Abierto
Atribución-NoComercial-SinDerivadas
DOI: 10.3390/agronomy13010041
URL: https://www.mdpi.com/2073-4395/13/1/41
ISSN: 2073-4395
aquaponics, herbs, leaf pigments, plant nutrition, optimal pH, sustainability
"Low nutrient and high pH of circulating water represent two of the main issues to overcome for a successful combination of aquaculture and hydroponics in aquaponics offering a sustainable and circular economy solution for vegetable production. The purpose of this study was to screen the tolerance of four herbs to high pH and low nutrient concentration in hydroponics, i.e., green and red basils, mint, and rocket salad, with a focus on plant yield and nutraceutical aspects. Results highlighted green basil as the most tolerant species to low nutrient and high pH conditions followed by mint. On the contrary, negative effects from high pH and low nutrient were reported on red basil and especially rocket salad, which strongly affect their marketability parameters. Rocket salad fresh biomass was more than halved under the combination of high pH and low nutrients. Results on green and red basil showed the importance of testing the tolerance to these agronomic conditions at both species and variety levels. Despite the reduction in biomass, leaf pigments were not influenced by high pH and low nutrients and therefore can be considered parameters of minor importance for the evaluation of these species. In conclusion, the tolerance of green basil and mint to high pH and low nutrients under hydroponic conditions has been highlighted. Further investigation coupled with fish farming will be able to reinforce the convenience of using these species for aquaponics."
Multidisciplinary Digital Publishing Institute
2023
Artículo
Agronomy
Inglés
Fimbres-Acedo, Y.E.; Traversari, S.; Cacini, S.; Costamagna, G.; Ginepro, M.; Massa, D. Testing the Effect of High pH and Low Nutrient Concentration on Four Leafy Vegetables in Hydroponics. Agronomy 2023, 13, 41. https://doi.org/10.3390/agronomy13010041
DESARROLLO VEGETAL
Versión publicada
publishedVersion - Versión publicada
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