Interactions Between Horticultural Crops and Organic/Inorganic Biostimulants in Semiarid Agroecosystems

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Plant Nutrition".

Deadline for manuscript submissions: 20 December 2025 | Viewed by 457

Special Issue Editors


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Guest Editor
Faculty of Agricultural Sciences, Technical University Luis Vargas Torres, Esmeraldas 080102, Ecuador
Interests: physiology; biostimulants; drought; agroforestry

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Guest Editor
Faculty of Livestock and Biological Sciences, Technical State University of Quevedo, Quevedo 120501, Ecuador
Interests: biostimulants; plant physiology; abiotic stress

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Guest Editor
Nanotechnology & Microbial Biocontrol Group, Centro de Investigaciones Biológicas del Noroeste, La Paz 23096, Mexico
Interests: phytopathology; food science; plant–microbe interactions; microbiology; biological control; plant disease resistance; nanotechnology
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Special Issue Information

Dear Colleagues,

The production of horticultural crops in semiarid regions is often constrained by poor soil fertility, low levels of organic matter, and water scarcity. Globally, both organic biostimulants (compost, humic acids, seaweed extracts, nanofertilisers, microorganisms) and inorganic biostimulants (micronutrient chelates) are increasingly being used to enhance plant growth and plants’ ability to tolerate biotic and abiotic conditions. However, knowledge about their comparative efficacy and potential synergistic or antagonistic interactions when used in semiarid soils remains limited. A better understanding of these interactions is essential for the sustainable cultivation of crops in challenging environments.

The aim of this Special Issue is to assess the effects of organic and inorganic biostimulants on the growth, yield, and physiological performance of selected horticultural crops in semiarid soils, which can be achieved through

  1. Evaluating the individual and combined effects of organic and inorganic biostimulants on plant growth parameters.
  2. Analysing the impact of biostimulants on crop yield and quality.
  3. Assessing the physicochemical changes in soil following biostimulant application.
  4. Investigating the ecophysiological responses of plants to biostimulant treatments.
  5. Identifying the most effective types and combinations of biostimulants for improving productivity under semiarid conditions.

Prof. Dr. Wilmer Tezara
Prof. Dr. Juan Jose Reyes-Pérez
Dr. Luis Guillermo Hernández-Montiel
Guest Editors

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Keywords

  • physiology
  • photosynthesis
  • biostimulants
  • drought
  • agroforestry organic biostimulants
  • vermicompost extract
  • seaweed extract
  • microorganisms
  • compost tea
  • amino acid formulations
  • nanoparticles
  • humic and fulvic acids
  • inorganic
  • silicon (Si) sprays
  • zinc or iron chelates
  • synthetic growth regulators

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Published Papers (1 paper)

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Research

16 pages, 26137 KB  
Article
Silicon Application Methods Differentially Modulate Nutrient Uptake and Morphophysiology in Passiflora edulis Seedlings Under Salt Stress
by Raquel da Silva Ferreira, Rennan Fernandes Pereira, Alicia Camila Zeferino da Silva, José Félix de Brito Neto, Lays Klécia Silva Lins, Caio da Silva Sousa, José Paulo Costa Diniz, Fernanda Suassuna Fernandes, Orquídea Suassuna Maia, Elisângela Alencar Gomes, Raquel Alice Silveira Alves, Alberto Soares de Melo and Evandro Franklin de Mesquita
Horticulturae 2025, 11(11), 1396; https://doi.org/10.3390/horticulturae11111396 - 19 Nov 2025
Viewed by 325
Abstract
Silicon (Si) is a beneficial element that alleviates the adverse effects of salinity in plants. Despite extensive evidence of Si-mediated stress alleviation in other crops, information for tropical fruit species such as Passiflora edulis remains limited, especially regarding the efficiency of different application [...] Read more.
Silicon (Si) is a beneficial element that alleviates the adverse effects of salinity in plants. Despite extensive evidence of Si-mediated stress alleviation in other crops, information for tropical fruit species such as Passiflora edulis remains limited, especially regarding the efficiency of different application methods. This study evaluated two yellow passion fruit cultivars (BRS Sol do Cerrado and BRS Gigante Amarelo) at the seedling stage under five management conditions: irrigation with 1.2 dS m−1 water (control), 4.0 dS m−1 water (salt stress), and salt stress combined with Si applied via soil, foliar spray, or both (soil + foliar), using silicic acid as the Si source. The experiment was conducted in a completely randomized design in a 2 × 5 factorial arrangement with five replicates. High salinity decreased foliar nutrient concentrations, gas exchange, and seedling quality, whereas Si mitigated these effects depending on the application method and cultivar. Combined soil and foliar application increased nutrient contents, biomass, and the Dickson Quality Index, especially in BRS Gigante Amarelo. These findings provide new insights into Si management for P. edulis and offer practical implications for improving nutrient balance, growth, and seedling performance under saline conditions. Full article
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