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Biostimulants Application on Olea europaea L. in Mediterranean Conditions Increase the Production and Bioactive Compounds of Drupes and Oil

Author

Listed:
  • Aurora Cirillo

    (Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy)

  • Lucia De Luca

    (Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy)

  • Giulia Graziani

    (Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy)

  • Marco Cepparulo

    (Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy)

  • Christophe El-Nakhel

    (Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy)

  • Maria Giordano

    (Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy)

  • Youssef Rouphael

    (Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy)

  • Alberto Ritieni

    (Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy)

  • Raffaele Romano

    (Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy)

  • Claudio Di Vaio

    (Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy)

Abstract

Over the years, the use of biostimulants has become increasingly widespread due to their proven efficiency in improving plant productivity and quality of fruits and mitigating the effects related to environmental stress. The aim of the present study was to evaluate the effect of three biostimulants on oil yield, production of drupes per plant, and nutraceutical components of olive drupes and oil (total polyphenols, anthocyanins, and fatty acids %) for “Racioppella” cultivar trees growing in South Italy (May–October 2021). The biostimulants used were: a tropical plants extract (A) containing amino acids, vitamins, enzymes, phytochelatins, macro- and microelements, a glycine betaine-based product (B), and a Trichoderma spp.-based biostimulant (T). The three biostimulants were compared with a control thesis (C) treated only with water. T treatment increased the polyphenols content of olive drupes by 41.04% compared to C. A and B treatments increased polyphenols content by 21.87% on average compared to C. All three biostimulants showed positive effect by increasing the amount of polyphenols in olive oil compared to C:T showed an increase of 32.19%, B 7.76%, and A 19.78%. Biostimulant application proved useful in boosting fundamental parameters that determine better drupe and oil in terms of antioxidant capacity and nutraceutical potential, other than an increased production.

Suggested Citation

  • Aurora Cirillo & Lucia De Luca & Giulia Graziani & Marco Cepparulo & Christophe El-Nakhel & Maria Giordano & Youssef Rouphael & Alberto Ritieni & Raffaele Romano & Claudio Di Vaio, 2022. "Biostimulants Application on Olea europaea L. in Mediterranean Conditions Increase the Production and Bioactive Compounds of Drupes and Oil," Agriculture, MDPI, vol. 12(12), pages 1-17, December.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:12:p:2173-:d:1007382
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    References listed on IDEAS

    as
    1. Mona Mazeh & Leen Almadi & Andrea Paoletti & Nicola Cinosi & Elissa Daher & Michele Tucci & Enrico Maria Lodolini & Adolfo Rosati & Franco Famiani, 2021. "Use of an Organic Fertilizer Also Having a Biostimulant Action to Promote the Growth of Young Olive Trees," Agriculture, MDPI, vol. 11(7), pages 1-11, June.
    2. Giulia Graziani & Aurora Cirillo & Paola Giannini & Stefano Conti & Christophe El-Nakhel & Youssef Rouphael & Alberto Ritieni & Claudio Di Vaio, 2022. "Biostimulants Improve Plant Growth and Bioactive Compounds of Young Olive Trees under Abiotic Stress Conditions," Agriculture, MDPI, vol. 12(2), pages 1-18, February.
    3. Leen Almadi & Andrea Paoletti & Nicola Cinosi & Elissa Daher & Adolfo Rosati & Claudio Di Vaio & Franco Famiani, 2020. "A Biostimulant Based on Protein Hydrolysates Promotes the Growth of Young Olive Trees," Agriculture, MDPI, vol. 10(12), pages 1-10, December.
    4. Rita Leogrande & Daniel El Chami & Giulio Fumarola & Michele Di Carolo & Giuseppe Piegari & Mario Elefante & Donato Perrelli & Crescenza Dongiovanni, 2022. "Biostimulants for Resilient Agriculture: A Preliminary Assessment in Italy," Sustainability, MDPI, vol. 14(11), pages 1-16, June.
    5. Rocco Mafrica & Amalia Piscopo & Alessandra De Bruno & Marco Poiana, 2021. "Effects of Climate on Fruit Growth and Development on Olive Oil Quality in Cultivar Carolea," Agriculture, MDPI, vol. 11(2), pages 1-18, February.
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