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Article

Enhancing the Quality of Two Species of Baby Leaves Sprayed with Moringa Leaf Extract as Biostimulant

1
Department of Agriculture, Food and Environment (Di3A), Università degli Studi di Catania, Via Valdisavoia 5, 95123 Catania, Italy
2
Department of Agricultural and Environmental Sciences, Università degli Studi di Milano, Via Celoria 2, 20133 Milan, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Małgorzata Szczepanek
Agronomy 2021, 11(7), 1399; https://doi.org/10.3390/agronomy11071399
Received: 9 June 2021 / Revised: 1 July 2021 / Accepted: 8 July 2021 / Published: 12 July 2021
Natural biostimulants obtained by plants are intensively used nowadays to improve crop yield and quality. The current study aimed to evaluate the effects of leaf extract of moringa (Moringa oleifera Lam.) (MLE) in modifying baby leaf characteristics of two genotypes of Brassica. The trial was started in October 2020 in a greenhouse; a cultivar of kale ‘Cavolo Laciniato Nero di Toscana’ (CL) and a Sicilian landrace of sprouting broccoli ‘Broccoli Nero’ (BN) were used. The plants, after 15, 30 and 40 days from sowing, were treated with MLE, while the control plants (C) with distilled water. Treatment with MLE modified morphological and nutritional value, but with different behavior in the two genotypes. In fact, in BN the treatment reduced the antioxidant activity (2.2-diphenyl-1-picrylhydrazyl (DPPH)) by 54%, while in CL the treatment increased this parameter by 40%. For the phenolic concentration and the sugar content the values recorded were significantly increased by MLE compared to control plants in CL, where in BN a significant reduction was registered. The CL plants treated with MLE showed a significant reduction (−70%) in nitrate content compared to the control plants; a negative effect was, instead, observed in BN, where the plants treated with moringa showed an increase of 60%. Results of this study showed how the foliar application of MLE was effective in improving various nutraceutical parameters, in particular in kale, because it appears to be a species-specific response. View Full-Text
Keywords: brassicaceae; biostimulants; antioxidant activity; total sugars; nitrate content brassicaceae; biostimulants; antioxidant activity; total sugars; nitrate content
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MDPI and ACS Style

Toscano, S.; Ferrante, A.; Branca, F.; Romano, D. Enhancing the Quality of Two Species of Baby Leaves Sprayed with Moringa Leaf Extract as Biostimulant. Agronomy 2021, 11, 1399. https://doi.org/10.3390/agronomy11071399

AMA Style

Toscano S, Ferrante A, Branca F, Romano D. Enhancing the Quality of Two Species of Baby Leaves Sprayed with Moringa Leaf Extract as Biostimulant. Agronomy. 2021; 11(7):1399. https://doi.org/10.3390/agronomy11071399

Chicago/Turabian Style

Toscano, Stefania, Antonio Ferrante, Ferdinando Branca, and Daniela Romano. 2021. "Enhancing the Quality of Two Species of Baby Leaves Sprayed with Moringa Leaf Extract as Biostimulant" Agronomy 11, no. 7: 1399. https://doi.org/10.3390/agronomy11071399

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