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A Biostimulant Based on Protein Hydrolysates Promotes the Growth of Young Olive Trees

Author

Listed:
  • Leen Almadi

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via Borgo XX Giugno 74, 06121 Perugia, Italy
    Co-first authors.)

  • Andrea Paoletti

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via Borgo XX Giugno 74, 06121 Perugia, Italy
    Co-first authors.)

  • Nicola Cinosi

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via Borgo XX Giugno 74, 06121 Perugia, Italy)

  • Elissa Daher

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via Borgo XX Giugno 74, 06121 Perugia, Italy)

  • Adolfo Rosati

    (CREA, Centro di Ricerca Olivicoltura, Frutticoltura e Agrumicoltura, 06049 Spoleto, Italy)

  • Claudio Di Vaio

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, Via Università, 100, 80055 Portici, Italy)

  • Franco Famiani

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via Borgo XX Giugno 74, 06121 Perugia, Italy)

Abstract

Experiments were carried out in 2018 and 2019 to evaluate the effects of a biostimulant of animal origin, with a hormone-like action, on the growth and physiology of young olive trees. The biostimulant, consisting of a complex of natural amino acids (glycine, proline, and hydroxyproline, etc.), was applied by fertigation to both potted (one-year-old) and field-grown (2 years after transplanting) young olive trees. The control consisted of trees treated with an amount of urea nitrogen equal to the total nitrogen supplied with the biostimulant. Potted trees treated with the biostimulant showed greater growth than the control soon after treatment and up to the end of the vegetative season. Generally, this was associated with higher leaf photosynthetic rates and stomatal conductance. At the end of the experiment, all tree parts (roots, stem, shoots, and leaves) of the treated trees had greater biomass than the control. The trunks of field-grown trees treated with the biostimulant had greater growth with respect to the control. Overall, the results indicate the possibility of using the biostimulant based on complexes of natural amino acids to promote the growth of young olive trees.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jagris:v:10:y:2020:i:12:p:618-:d:459463
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    Citations

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    Cited by:

    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. 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.
    3. 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.

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