Water Activated by a Microwave Plasma Argon Jet as a Factor Stimulating the Germination of Plant Seeds

Sergeichev, K. F.; Лукина, Н. А.; Apasheva, L. M.; Ovcharenko, E. N.; Лобанов, А. В.

doi:10.1134/s1990793122010134

Cited by 10 publications

(3 citation statements)

References 28 publications

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“…The apparatus was made based on a technological microwave plasma torch for open-air operation. The microwave source was a commercial magnetron of 1.2 kW power operating at a frequency of 2.45 GHz in continuous generation mode [ 38 , 39 ]. A brightly glowing plasma jet carried ions and argon atoms falling to the surface of the water at high speed.…”

Section: Methodsmentioning

confidence: 99%

Effects of Plasma-Activated Water on Leaf and Fruit Biochemical Composition and Scion Growth in Apple

Кузин

Solovchenko²,

Khort³

et al. 2023

Plants

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The application of plasma-activated water (PAW) in agriculture has gained the attention of researchers and practitioners. In particular, treatment with PAW is a promising method for increasing scion and rootstock survival as well as augmenting the mineral nutrition applicable to tree fruit crops. However, the applications of PAW are hampered by the lack of information about the effects of PAW on apple tree condition and yield. The increase in survival rate by PAW is believed to stem from the general stimulation of physiological processes in the plant tissue. To assess the actual effect of the PAW treatments, one needs to consider an important indicator of young tree quality such as their vegetative growth. We conducted field experiments to study the possibility of use of PAW for increase in primary nutrient contents in fruits and leaves in an orchard, as well as to assess the scion survival rate and vegetative growth of young grafts in a nursery. The application of PAW influenced the fruitset, yield, leaf nitrogen (N) and potassium (K), fruit phosphorus (P), calcium (Ca) ascorbic acid (AA) and titratable acidity (TA). Treatment with PAW did not significantly reduce the negative impact of the rootstock thickness on the survival rate of bench grafts and their subsequent development. At the same time, scion survival tended to increase in the case when the scions and the rootstocks were of compatible thickness. Further studies of the PAW treatment effects are needed to better understand its applicability in diverse fields of horticulture.

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Section: Methodsmentioning

confidence: 99%

Effects of Plasma-Activated Water on Leaf and Fruit Biochemical Composition and Scion Growth in Apple

Кузин

Solovchenko²,

Khort³

et al. 2023

Plants

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show abstract

“…The equipment was constructed based on microwave plasma-torch technology. The microwave source utilized was a commercial 1.2 kW power magnetron operating at a frequency of 2.45 GHz in continuous generation mode [46,47]. The plasma jet was created in an isolated chamber with a nitrogen atmosphere using argon as the feed gas.…”

Section: Paw Preparationmentioning

confidence: 99%

Influence of Plasma-Activated Water on Foliar and Fruit Micronutrient Content and Plant Protection Efficiency

Kuzin,

Kashirskaya,

Solovchenko

et al. 2024

Horticulturae

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Foliar fertilizing is very important to supply apple plants with calcium and micronutrients. The most cost-effective approach to this is the application of the fertilizers in tank mixtures with plant protection chemicals. Plasma-activated water (PAW) has great potential for the use in the agriculture. We used two type of PAWs, PAW1 (made using underwater electrical discharge in an aqueous KNO3 solution and includes reactive nitrogen species and platinum nanoparticles) and PAW2 (made using a plasma torch with nitrogen gas makeup and contains reactive nitrogen species but not metals). We studied the impact of two PAW types on the contents of Ca, B, Mn, Fe, and Co in leaves and Ca, Mn, Fe, Zn, and Mo in fruits sprayed with tank mixtures containing the fertilizers. We also tested the efficiency of PAW in the control of apple scab when applied as tank mixtures with plant protection chemicals. The application of the PAWs significantly increased foliar Ca when the PAW was mixed with Ca-containing formulations (spraying PAW1 containing Ca increased leaf Ca by up to 21%, and PAW2 up by to 9% compared to Ca spraying without PAW). The largest fruit Ca increase was in the variant treated with PAW1 with a micronutrient spraying program (up to 143%). The PAW treatments enhanced the baseline mineral contents of the plants even when they were not sprayed with the nutrients. PAW1 mainly increased the nutrient contents of the apple fruits. PAWs have proven to be efficient for the control of apple scab, thereby reducing the demand for fungicides. The scab damage to the leaves and fruits was similar in plants treated with PAWs without fungicides (1.7–1.9% on the leaves and 1.6–1.8% on the fruits) compared to the conventional chemical scab control (0.9% leaves and 0.6% fruits) and was significantly lower than in the untreated control (9.3% on leaves and 11.9 on fruits).

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“…When plasma interacts with condensed matter, for example, water, the following is observed: Some of the plasma electrons and ions interact with water molecules and molecules of gases dissolved in water, transferring part of their energy to them [8,9]. As a result, more than 100 different chemical compounds are formed in the aqueous phase, some of which have significant biological activity and a significant lifetime [10]. Some of these products are called reactive oxygen species [11], whereas some are classified as reactive nitrogen species [12].…”

Section: Introductionmentioning

confidence: 99%

Portable Technology for Obtaining Plasma-Activated Water to Stimulate the Growth of Spruce and Strawberry Plants

Danileyko,

Belov,

Egorov

et al. 2023

Horticulturae

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A method for stimulating the growth of spruce and strawberry in the early phases of development is proposed. A technology for obtaining plasma-activated water (PAW) with the help of a glow discharge plasma generator was developed. The method is proposed for increasing the shelf life of PAW by adding an aqueous colloid of polyvinylpyrralidone (PVP) polymer. It is shown that after treatment with a PAW + PVP mixture, the seeds have a higher percentage of germination, the plants develop faster in the early stages, and they are more viable. At the physicochemical level, after seed treatment with PAW + PVP, higher rates of metabolite outflow from seeds are observed. At the biological level, seed treatment with PAW + PVP leads to a slight decrease in the activity of antioxidant enzymes and a higher content of chlorophylls in the leaves, and a slightly higher assimilation rate is observed. In the leaves, there is higher content of the growth hormone indole-3-acetic acid (IAA), whereas the content of the growth-inhibiting hormone abscisic acid decreases. The use of a stimulating drug based on the composition of an aqueous solution activated by plasma and polyvinylpyrrolidone (PAW + PVP) polymer can be an effective means of a single pre-sowing treatment of spruce seeds in solving the problem of reforestation and strawberry during plant propagation.

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Water Activated by a Microwave Plasma Argon Jet as a Factor Stimulating the Germination of Plant Seeds

Cited by 10 publications

References 28 publications

Effects of Plasma-Activated Water on Leaf and Fruit Biochemical Composition and Scion Growth in Apple

Effects of Plasma-Activated Water on Leaf and Fruit Biochemical Composition and Scion Growth in Apple

Influence of Plasma-Activated Water on Foliar and Fruit Micronutrient Content and Plant Protection Efficiency

Portable Technology for Obtaining Plasma-Activated Water to Stimulate the Growth of Spruce and Strawberry Plants

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