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Agronomy
Volume 11
Issue 6
10.3390/agronomy11061118
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Article

Effect of Nutrient Solution pH on the Growth, Yield and Quality of Taraxacum officinale and Reichardia picroides in a Floating Hydroponic System

by
Alexios A. Alexopoulos
1,
Efstathios Marandos
1,
Anna Assimakopoulou
2,
Nikolina Vidalis
3,
Spyridon A. Petropoulos
4,* and
Ioannis C. Karapanos
3,*
1
Laboratory of Agronomy, Department of Agriculture, University of the Peloponnese, Antikalamos, 241 00 Kalamata, Greece
2
Laboratory of Plant Physiology, Department of Agriculture, University of the Peloponnese, Antikalamos, 241 00 Kalamata, Greece
3
Laboratory of Vegetable Production, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 118 55 Athens, Greece
4
Laboratory of Vegetable Production, Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 384 46 Nea Ionia, Greece
*
Authors to whom correspondence should be addressed.
Academic Editor: Alessandra Carrubba
Agronomy 2021, 11(6), 1118; https://doi.org/10.3390/agronomy11061118
Received: 6 May 2021 / Revised: 27 May 2021 / Accepted: 28 May 2021 / Published: 30 May 2021
(This article belongs to the Special Issue Cultivation Practices, Pharmaceutical and Nutritional Value of Weeds)
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Abstract

Given the important medicinal and nutritional value of wild edible greens, the last few years there is an increasing interest for their domestication and commercial exploitation. However, information concerning their adaptation to environmental conditions and their response to modern agricultural systems are scarce. In the present study, the effect of nutrient solution pH (4.0, 5.5 and 7.0) on the growth, chemical composition and inorganic nutrition of Taraxacum officinale and Reichardia picroides plants grown indoors in a floating hydroponic system was evaluated. Both species performed better at pH 5.5 and were slightly affected by pH 7.0, whereas pH 4.0 was not prohibitive for growth for both species, although R. picroides was less tolerant than T. officinale at low pH. Moreover, pH 4.0 did not severely affect nutrients uptake and transport within the plant tissues, suggesting that R. picroides susceptibility to low pH should not be attributed to nutrients imbalance. Nevertheless, low pH positively enhanced the content in total soluble solids, total phenolics, chlorophylls (a, b and total) and carotenoids, and decreased nitrates in both species. In conclusion, the studied species could be successfully grown in soilless systems with nutrient solutions of varied pH. Moreover, low pH levels (pH = 4.0) seemed to be beneficial to nutritional and dietary value in both species highlighting the potential of commercial cultivation under adverse conditions, especially in sustainable farming systems. View Full-Text
Keywords: common brighteyes; dandelion; chemical composition; medicinal plants; wild edible greens; sustainable farming common brighteyes; dandelion; chemical composition; medicinal plants; wild edible greens; sustainable farming
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MDPI and ACS Style

Alexopoulos, A.A.; Marandos, E.; Assimakopoulou, A.; Vidalis, N.; Petropoulos, S.A.; Karapanos, I.C. Effect of Nutrient Solution pH on the Growth, Yield and Quality of Taraxacum officinale and Reichardia picroides in a Floating Hydroponic System. Agronomy 2021, 11, 1118. https://doi.org/10.3390/agronomy11061118

AMA Style

Alexopoulos AA, Marandos E, Assimakopoulou A, Vidalis N, Petropoulos SA, Karapanos IC. Effect of Nutrient Solution pH on the Growth, Yield and Quality of Taraxacum officinale and Reichardia picroides in a Floating Hydroponic System. Agronomy. 2021; 11(6):1118. https://doi.org/10.3390/agronomy11061118

Chicago/Turabian Style

Alexopoulos, Alexios A., Efstathios Marandos, Anna Assimakopoulou, Nikolina Vidalis, Spyridon A. Petropoulos, and Ioannis C. Karapanos. 2021. "Effect of Nutrient Solution pH on the Growth, Yield and Quality of Taraxacum officinale and Reichardia picroides in a Floating Hydroponic System" Agronomy 11, no. 6: 1118. https://doi.org/10.3390/agronomy11061118

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