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Article

Biowaste-Derived Humic-like Substances Improve Growth and Quality of Orange Jasmine (Murraya paniculata L. Jacq.) Plants in Soilless Potted Culture

1
CREA Research Centre for Plant Protection and Certification, 90011 Bagheria, Italy
2
Dipartimento di Scienze delle Produzioni Agrarie e Alimentari, Università di Catania, Via S. Sofia 98, 95123 Catania, Italy
3
Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Ezio Riggi, Raffaella Maria Balestrini and Edoardo Marco Napoli
Received: 24 June 2021 / Revised: 2 August 2021 / Accepted: 3 August 2021 / Published: 8 August 2021
Humic-like substances (HLS) are among the most used biostimulants in agriculture as a means for improving plant growth, nutrient uptake, crop yield, and stress tolerance. HLS derived from municipal biowastes were applied as a substrate drench in order to evaluate their biostimulatory effect on the growth and ornamental quality of Orange Jasmine (Murraya paniculata L. Jacq.) potted plants. Two HLS, derived from the digestion of the organic humic fraction and from composting of a mix of sewage sludge digestate and gardening residues, were compared with a commercial leonardite-based product in the framework of a greenhouse experiment in soilless culture. The application of the two biowaste-derived HLS resulted in plants showing a 39.9%, 87.0%, 111.6%, 35.4%, 37.9%, 35.3%, and 81.3% increase in plant height, number of flowers and fruits, leaf production, total dry biomass, root length, and water use efficiency, respectively, compared to those treated with the commercial product and the untreated (control) plants. The enhanced growth performance of HLS-treated plants was due to the higher chlorophyll relative content (+24.2% on average) and net photosynthesis (+114.7% on average) of their leaves. The positive results obtained from the application of non-commercial HLS suggest that biowaste recycling is a sustainable and environment-friendly source of biostimulants, as an alternative to agrochemicals and existing leonardite-based plant biostimulants. View Full-Text
Keywords: plant biostimulants; humic acids; leonardite; urban biowastes; digestate; compost; ornamentals; photosynthesis plant biostimulants; humic acids; leonardite; urban biowastes; digestate; compost; ornamentals; photosynthesis
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MDPI and ACS Style

Fascella, G.; Montoneri, E.; Rouphael, Y. Biowaste-Derived Humic-like Substances Improve Growth and Quality of Orange Jasmine (Murraya paniculata L. Jacq.) Plants in Soilless Potted Culture. Resources 2021, 10, 80. https://0-doi-org.brum.beds.ac.uk/10.3390/resources10080080

AMA Style

Fascella G, Montoneri E, Rouphael Y. Biowaste-Derived Humic-like Substances Improve Growth and Quality of Orange Jasmine (Murraya paniculata L. Jacq.) Plants in Soilless Potted Culture. Resources. 2021; 10(8):80. https://0-doi-org.brum.beds.ac.uk/10.3390/resources10080080

Chicago/Turabian Style

Fascella, Giancarlo, Enzo Montoneri, and Youssef Rouphael. 2021. "Biowaste-Derived Humic-like Substances Improve Growth and Quality of Orange Jasmine (Murraya paniculata L. Jacq.) Plants in Soilless Potted Culture" Resources 10, no. 8: 80. https://0-doi-org.brum.beds.ac.uk/10.3390/resources10080080

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