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Use of an Organic Fertilizer Also Having a Biostimulant Action to Promote the Growth of Young Olive Trees

Author

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  • Mona Mazeh

    (CIHEAM-Bari—Centre International de Hautes Etudes Agronomiques Méditerranéennes, 70010 Valenzano, Italy
    These authors contributed equally to this work.)

  • Leen Almadi

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, 06121 Perugia, Italy
    These authors contributed equally to this work.)

  • Andrea Paoletti

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, 06121 Perugia, Italy
    These authors contributed equally to this work.)

  • Nicola Cinosi

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, 06121 Perugia, Italy)

  • Elissa Daher

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, 06121 Perugia, Italy)

  • Michele Tucci

    (CIHEAM-Bari—Centre International de Hautes Etudes Agronomiques Méditerranéennes, 70010 Valenzano, Italy)

  • Enrico Maria Lodolini

    (CREA, Centro di Ricerca Olivicoltura, Frutticoltura e Agrumicoltura, 00134 Roma, Italy)

  • Adolfo Rosati

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

  • Franco Famiani

    (Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, 06121 Perugia, Italy)

Abstract

In 2019–2020, trials were carried out with the aim of evaluating the possibilities of using an organic fertilizer, reported to have a biostimulant action, for promoting the growth of young olive trees. The experiments were implemented using both potted and field-grown trees. The effects of the organic fertilizer were evaluated with respect to trees treated with a chemical fertilizer; for potted trees a control without any fertilization was also used. Therefore, the compared treatments were: organic fertilization vs. chemical fertilization or no fertilization in the experiment with potted trees; organic fertilization vs. chemical fertilization in the experiment with field-grown trees. Non-fertilized potted trees had the lowest growth. The organic fertilizer, with respect to the chemical one, determined higher growth in both potted and field-grown trees (+22–29% of the increment of the trunk cross sectional area). In potted trees, it determined a rapid elongation of the stem (+30% of the increment of tree height with respect to chemically fertilized trees) and this likely favored the development of a higher number of leaves, which, together with an increase in their photosynthetic activity (in August, +27% with respect to chemical fertilized trees), created conditions for higher assimilate production and in turn greater tree growth. Trees in the field showed that the greater growth was not obtained at the expenses of reproductive growth, which increased to the same degree as the vegetative growth. Overall, the results support the biostimulant action of the organic fertilizer and indicate the possibility of its use to improve the growth of young olive trees.

Suggested Citation

  • 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.
  • Handle: RePEc:gam:jagris:v:11:y:2021:i:7:p:593-:d:583008
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    References listed on IDEAS

    as
    1. 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.
    2. Isaac Zipori & Ran Erel & Uri Yermiyahu & Alon Ben-Gal & Arnon Dag, 2020. "Sustainable Management of Olive Orchard Nutrition: A Review," Agriculture, MDPI, vol. 10(1), pages 1-21, January.
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    1. 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.

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