The effect of non-thermal plasma treatment on wheat germination and early growth

Dobrin, Daniela; Măgureanu, Monica; Mandache, Nicolae Bogdan; Ionita, Maria Daniela

doi:10.1016/j.ifset.2015.02.006

Cited by 188 publications

(128 citation statements)

References 13 publications

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“…[3][4][5] The NTP is an ionized gas which can be generated in different gas mixtures using microwaves, radio frequency, pulsed or alternative current in various setups such as dielectric barrier discharge (DBD), atmospheric pressure plasma jet (APPJ), and corona discharges. [6][7][8] In such plasmas, in one hand, the heavy particles (ions, molecules) remain at low temperature making NTP suitable for the surface treatment of sensitive materials.…”

Section: 2mentioning

confidence: 99%

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Enhanced seed germination and plant growth by atmospheric pressure cold air plasma: combined effect of seed and water treatment

2017

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The combined effect of non-thermal plasma treatment of water and seeds on the rate of germination and plants growth of radish (Raphanus sativus), tomato (Solanum lycopersicum), and sweet pepper (Capsicum annum) have been investigated using dielectric barrier discharges in air under atmospheric pressure and room temperature. A cylindrical double dielectric barrier discharge reactor is used for water activation and a plate-to-plate double DBD reactor is employed for seed treatment. The activation of water, for 15 and 30 min, lead to acidic solutions (pH z 3) with moderate concentrations of nitrate (NO 3 À ) and hydrogen peroxide (H 2 O 2 ). Plasma activated water (PAW) has shown a significant impact on germination as well as plant growth for the three types of seeds used. Interestingly, the positive effect, in seed germination and seedling growth, has been observed when the PAW and plasma-treated seeds (10 and 20 min) were combined. In one hand, when the seeds were (tomato and pepper) exposed to 10 min plasma and watered with PAW-15 for first 9 days followed by tap water for 51 days, the stem length is increased about 60% as compared to control sample. On the second hand, for longer exposures of seeds and water to plasma discharges, a negative effect is observed. For instance, plasma-treated seeds watered with PAW-30, the plant growth and vitality were decreased as compared to control sample.These results revealed that the developed cold plasma reactors could be used to significantly improve the seed germination as well as plant growth, nevertheless, the plasma treatment time has to be optimized for each seeds.

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Section: 2mentioning

confidence: 99%

“…3,4,37,38 The improved germination by plasma discharge on the seed surface can be correlated to several factors such as increase in surface wettability, 14 killing of bacteria and pathogens on the seed surface. 20,21 In addition, the local heating probably opens up the seed coating and increases the water intake.…”

Section: 37mentioning

confidence: 99%

Enhanced seed germination and plant growth by atmospheric pressure cold air plasma: combined effect of seed and water treatment

2017

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“…Dobrin et al treated wheat seeds (Triticum aestivum) by non‐thermal plasma using a surface discharge reactor, at atmospheric pressure and room temperature . The discharge was generated in AC mode (15 kV) using a high voltage supply at 50 Hz.…”

Section: Seed Treatments Using Non‐thermal Plasmamentioning

confidence: 99%

“…There are number of advantages in atmospheric pressure plasma, for example, they avoid the use of vacuum devices and allow in‐line batch processing. The effectiveness of dielectric barrier discharges at atmospheric pressure was demonstrated recently and needs further investigations as a preferred approach. In case of low pressure systems, the control samples must be carefully designed as in some studies, the mere exposure to vacuum changed the germination properties of the seeds perhaps due to removal of contaminants or changes to physical nature of the seeds' interior.…”

Section: Present Status and Future Possibilitiesmentioning

confidence: 99%

Non-Thermal Plasma Treatment of Agricultural Seeds for Stimulation of Germination, Removal of Surface Contamination and Other Benefits: A Review

Randeniya

Groot

2015

Plasma Process. Polym.

206

148

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The presence of pathogens and other stresses at germination and seedling stages affect the successful establishment of crops. The use of non-thermal plasma is a new approach to reduce such stresses. Plasma can interact with seeds and change their surface characteristics by etching, introducing functional groups and coating with exotic materials. Emerging evidence indicate that plasma treatment of seeds can enhance germination and seedling growth in crops by removal of microbial layers, changes in water uptake and other changes. Here, we review the status of research and show the potential role that plasma technology can play in addressing the challenges in food production. Major progress is possible by plasma treatments at or near atmospheric pressure where batch processing of large seed samples is possible.

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“…No caso específico do plasma DBD na forma de descarga em superfície, existe uma larga faixa de tensão e de frequência possíveis para o surgimento da descarga (11) . Essa flexibilidade de variáveis do processo, aliada às características de impedância do sistema, tem causado grande dificuldade e confusão na análise da influência dos parâmetros do processo sobre a aplicação particular (12) . Um estudo de um atuador aerodinâmico a plasma, relatando a influência dos materiais dielétricos, distância entre eletrodos e a influência da frequência e tensão aplicada na potência dissipada pelo atuador, foi realizado na literatura (13) .…”

Section: Introductionunclassified

Características elétricas e eficiência energética de um sistema de descarga de barreira dielétrica

Júnior

Pereira²,

Melo

et al. 2018

RBAV

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The electrical, optical and energetic efficiency characteristics of an asymmetrical surface dielectric barrier discharge (DBD) in atmospheric air have been investigated experimentally. Voltages in the range of 18-29 kV and 18-22 kHz frequencies were applied to the DBD system, producing filamentous and diffuse discharges on the surface of a glass dielectric. These discharges reached peak currents up to 4 mA. In terms of energetic efficiency, the system obtained minimum power 5 W required to produce plasma diffuse regime. The best conditions in the system were found for the distance between electrodes 0.8 mm.Keywords: Dielectric barrier discharge; Plasma applications; Plasma devices; Atmospheric plasma. ReSumoAs características elétricas, ópticas e de eficiência energética de uma descarga de barreira dielétrica (DBD) com eletrodos assimétricos em ar atmosférico foram investigadas experimentalmente. As tensões na faixa de 18-29 kV e frequência de 18-22 kHz foram aplicadas ao sistema DBD, produzindo descargas filamentosas e difusas na superfície de um dielétrico de vidro. Essas descargas atingiram correntes de pico até 4 mA.Em termos de eficiência energética, o sistema obteve potência mínima de 5 W necessária para produzir um regime difuso de plasma. As melhores condições do sistema foram encontradas para a distância entre eletrodos de 0,8 mm Palavras-chave: Descarga de barreira dielétrica; Aplicações de plasma; Dispositivo de plasma; Plasma em pressão atmosférica.

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The effect of non-thermal plasma treatment on wheat germination and early growth

Cited by 188 publications

References 13 publications

Enhanced seed germination and plant growth by atmospheric pressure cold air plasma: combined effect of seed and water treatment

Enhanced seed germination and plant growth by atmospheric pressure cold air plasma: combined effect of seed and water treatment

Non-Thermal Plasma Treatment of Agricultural Seeds for Stimulation of Germination, Removal of Surface Contamination and Other Benefits: A Review

Características elétricas e eficiência energética de um sistema de descarga de barreira dielétrica

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