Nutrient Cycle in Hydroponic Cultivation

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Horticultural and Floricultural Crops".

Deadline for manuscript submissions: 20 November 2025 | Viewed by 657

Special Issue Editor


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Guest Editor
College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
Interests: plant nutrition cycling; growth and quality of horticultural crops; nutrient solution formulations; optimization of hydroponic systems

Special Issue Information

Dear Colleagues,

Hydroponic cultivation stands at the forefront of sustainable agricultural practices, offering a promising solution to the challenges of modern farming. As we delve deeper into the intricacies of nutrient cycling, this Special Issue is dedicated to showcasing the latest breakthroughs and in-depth analyses that are shaping the future of hydroponics. We aim to unravel the complexities and highlight the transformative potential of nutrient management in hydroponic systems.

This Special Issue will delve into a spectrum of cutting-edge topics, including the following:(1)Innovative Strategies for Nutrient Management: Exploring new methodologies for optimizing nutrient solutions that can lead to significant improvements in crop health and yield. (2) Closed-Loop Systems and Nutrient Recycling: Examining the integration of advanced closed-loop systems that promote the efficient reuse of nutrients, minimizing waste and environmental impact. (3) Nutrient Dynamics in Hydroponic Environments: Investigating the interplay between nutrient availability, uptake, and utilization in hydroponic systems and its direct correlation with crop growth and yield. (4) Advanced Technologies in Hydroponics: Highlighting the role of technology in precision agriculture, from sensor-based monitoring to automated control systems for nutrient delivery. (5) Environmental and Economic Impacts: Assessing the broader implications of nutrient cycling on the sustainability and profitability of hydroponic farming practices.

Our goal is to foster a rich, interdisciplinary discourse that not only advances the scientific understanding of nutrient cycling in hydroponics but also translates these findings into practical applications for the agricultural community. This Special Issue will serve as a platform for researchers, industry professionals, and policymakers to engage in a collaborative effort towards more sustainable and efficient hydroponic farming. We warmly invite researchers and practitioners to submit their original research articles, comprehensive review papers, and insightful case studies.

Dr. Dandan Tang
Guest Editor

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Keywords

  • hydroponic cultivation
  • nutrient cycling
  • nutrient management
  • crop growth
  • nutrient solution formulation
  • environmental impact

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Published Papers (1 paper)

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Research

15 pages, 2812 KB  
Article
Optimizing the Light Intensity, Nutrient Solution, and Photoperiod for Speed Breeding of Alfalfa (Medicago sativa L.) Under Full-Spectrum LED Light
by Lingjuan Han, Yuanyuan Lv, Yifei Zhang, Xiaoyan Zhao, Peng Gao, Yinping Liang and Bin Li
Agronomy 2025, 15(9), 2067; https://doi.org/10.3390/agronomy15092067 - 27 Aug 2025
Viewed by 378
Abstract
Speed breeding technology has been used as a promising approach to accelerate plant breeding cycles and enhance agricultural productivity. However, systematic research on optimizing speed breeding conditions for alfalfa (Medicago sativa L.) in controlled plant factory environments remains limited. This study aimed [...] Read more.
Speed breeding technology has been used as a promising approach to accelerate plant breeding cycles and enhance agricultural productivity. However, systematic research on optimizing speed breeding conditions for alfalfa (Medicago sativa L.) in controlled plant factory environments remains limited. This study aimed to optimize light intensity, nutrient solution formulations, and photoperiod conditions for alfalfa speed breeding in plant factories equipped with full-spectrum LEDs, and to validate the applicability of these conditions across cultivars with different fall dormancy levels. Results demonstrated that a light intensity of 250 μmol·m−2·s−1 significantly enhanced photosynthetic parameters, antioxidant enzyme activities, and biomass accumulation while minimizing malondialdehyde (MDA). The 75% concentration of the Japanese garden-test formula (JGTF) outperformed the Hoagland solution in promoting growth and photosynthetic pigment synthesis. An extended photoperiod (22 h/d) substantially accelerated growth and shortened flowering time. Under optimized conditions (250 μmol·m−2·s−1 light intensity, 22 h/d photoperiod, and 75% Japanese Garden Test Formula), alfalfa cultivars reached initial flowering in approximately 37 days, regardless of fall dormancy level. This study establishes an effective speed breeding protocol for alfalfa, and the optimized conditions demonstrate broad applicability across cultivars with varying fall dormancy characteristics, providing a valuable foundation for accelerated alfalfa breeding programs and contributing to enhanced forage crop development efficiency. Full article
(This article belongs to the Special Issue Nutrient Cycle in Hydroponic Cultivation)
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