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Agronomy
Special Issues
High-Voltage Plasma Applications in Agriculture
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High-Voltage Plasma Applications in Agriculture

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Innovative Cropping Systems".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 2196

Special Issue Editors

Prof. Dr. Kazunori Koga

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Guest Editor
1. Center of Plasma Nano-Interface Engineering, Kyushu University, Fukuoka 819-0395, Japan
2. Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan
Interests: processing plasma; amorphous carbon; cell activation control; plasma agriculture
Special Issues, Collections and Topics in MDPI journals
Dr. Takamasa Okumura

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Guest Editor
1. Center of Plasma Nano-Interface Engineering, Kyushu University, Fukuoka 819-0395, Japan
2. Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan
Interests: plasma diagnosis onto gas–liquid phase; atmospheric pressure plasma; pulsed power
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Prof. Dr. Vida Mildažienė

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Guest Editor
Department of Biochemistry, Faculty of Natural Sciences, Vytautas Magnus University, K. Donelaičio Str. 58, 44248 Kaunas, Lithuania
Interests: plant biochemistry; plant stress response; effects of seed treatment with cold plasma; vacuum and electromagnetic field on agricultural plant performance; biochemical and physiological processes
Special Issues, Collections and Topics in MDPI journals
Dr. Katsuyuki Takahashi

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Guest Editor
Faculty of Science and Engineering, Iwate University, Iwate 020-8551, Japan
Interests: pulsed power; high voltage; plasma; electrical discharge; bio-application
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Prof. Dr. Koichi Takaki

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Guest Editor
1. Faculty of Science and Engineering, Iwate University, Iwate 020-8550, Japan
2. Agri-Innovation Center, Iwate University, Iwate 020-8550, Japan
Interests: pulsed power; high voltage; plasma; electrical discharge; bio-application
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Innovative technologies in modern food supply chains are a crucial issue for upholding sustainable societies, such as regenerative agricultures. The food supply chain in the agricultural sector consists of two phases: preharvest (production in agriculture) and postharvest (preserving the quality of the product during storage and transport). High electric fields and plasmas can affect biological components through various processes—such as causing an increase in electrical charge in living organisms and chemical reactions between active species and biological components—and have been actively studied worldwide. To accelerate the progress of novel academic fields, sharing information of state-of-the-art research is critical.

Thus, this Special Issue covers high-voltage and plasma applications for (1) the promotion of plant seed germination and seedling growth; (2) nitrogen fixation as a fertilizer; (3) the inactivation of pathogenic bacteria; (4) improving harvest yield; (5) maintaining the quality and safety of products; (6) the food processes of agricultural products; and (7) compact high-voltage devices and plasma generators.

Prof. Dr. Kazunori Koga
Dr. Takamasa Okumura
Prof. Dr. Vida Mildažienė
Dr. Katsuyuki Takahashi
Prof. Dr. Koichi Takaki
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • plasma
  • high voltage
  • seed germination
  • seedling growth
  • plant hormone control
  • bacteria inactivation

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Published Papers (2 papers)

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19 pages, 9544 KiB  
Article
Effects of High-Voltage Discharge Plasma on Drying Properties, Microstructure, and Nutrients of Oat Grass
by Xixuan Wang, Zhidan Liu, Peishuo Zhao and Zhiqing Song
Agronomy 2025, 15(2), 408; https://doi.org/10.3390/agronomy15020408 - 6 Feb 2025
Viewed by 706
Abstract
In this study, the drying properties of new-mown oat grass were investigated using three methods: high-voltage discharge plasma drying (HVDP), hot-air drying (HAD), and natural air drying (AD). The HVDP process mainly generates discharge plasma between needle electrodes and a dielectric plate by [...] Read more.
In this study, the drying properties of new-mown oat grass were investigated using three methods: high-voltage discharge plasma drying (HVDP), hot-air drying (HAD), and natural air drying (AD). The HVDP process mainly generates discharge plasma between needle electrodes and a dielectric plate by changing the discharge voltage. HVDP, which is a new type of non-thermal drying technology, uses the energy exchange associated with the action of plasma and the non-uniform electric field force to accelerate the evaporation of water. The results show that HVDP has obvious advantages in terms of the drying rate and drying time, as well as reducing energy consumption while retaining nutrients. In particular, under the condition of 35 kV, HVDP not only effectively shortened the drying time and reduced the energy consumption but also selectively degraded the nutrient-reducing substances (e.g., lignin) and retained the substances positively correlated with the nutrient quality, significantly improving the nutrient content of the treated oat grass. In conclusion, as an innovative non-thermal drying technology, HVDP has great potential to improve the drying efficiency and reduce nutrient degradation in oat grass, providing an innovative solution to improve its quality and utilisation. Full article
(This article belongs to the Special Issue High-Voltage Plasma Applications in Agriculture)
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19 pages, 3051 KiB  
Article
Non-Thermal Plasma-Activated Water Enhances Nursery Production of Vegetables: A Species-Specific Study
by Silvia Locatelli, Stefano Triolone, Marina De Bonis, Giampaolo Zanin and Carlo Nicoletto
Agronomy 2025, 15(1), 209; https://doi.org/10.3390/agronomy15010209 - 16 Jan 2025
Viewed by 1049
Abstract
Non-thermal plasma technology (NTP) has found widespread applications across several fields, including agriculture. Researchers have explored the use of NTP to improve plant growth and increase agricultural product quality using plasma-activated water (PAW). This technology has shown potential benefits in boosting seed germination, [...] Read more.
Non-thermal plasma technology (NTP) has found widespread applications across several fields, including agriculture. Researchers have explored the use of NTP to improve plant growth and increase agricultural product quality using plasma-activated water (PAW). This technology has shown potential benefits in boosting seed germination, promoting plant growth, as an effective defense against plant pathogens, and increasing systemic plant resistance. An experiment was set up over three different cultivation cycles to investigate the benefits of PAW administration on nursery production. Plasma-activated water was generated using two NTP intensities (PAW-HI = 600 mV; PAW-LI = 450 mV; CTR = tap water control) and manually applied to plants under greenhouse conditions. The species considered in the current study were tomato (Solanum lycopersicum L.), Swiss chard (Beta vulgaris L.), cabbage (Brassica oleracea L.), basil (Ocimum basilicum L.), and lettuce (Lactuca sativa L. var. Longifolia). The following morphological traits were measured at the end of each cycle and for each species: plant height (PH, cm), collar diameter (CD, mm), biomass (g), nutritional status (SPAD index), dry matter (DM, %), and chemical composition. The sturdiness index (SI) was determined by the PH-to-CD ratio. Results indicated a species-specific response to both PAW treatments compared to CTR. The plant height significantly increased in tomato (+11.9%) and cabbage (+5%) under PAW-HI treatment. In contrast, PAW-HI treatment negatively affected the PH in lettuce and basil (−18% and −9%, respectively). Swiss chard showed no significant response to either PAW-LI or PAW-HI treatments. Regarding DM, no significant differences were observed between the PAW treatments and CTR. However, an increase in total N content was detected in plant tissues across all species, except for basil, where no change was observed. The results suggest that PAW treatment has the potential to enhance vegetable nursery production, with species-specific responses observed in crops. Full article
(This article belongs to the Special Issue High-Voltage Plasma Applications in Agriculture)
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