This study aimed to develop a sustainable industrial chemical engineering technology to improve the interaction between technology, plants, and soil in agriculture. The signaling crosstalk between H2O2 and NO and that between H2O2 and Ca2+ influence plant developmental and physiological processes. Many promising technologies for crop stimulation and protection are based on a thorough study of the environmental impact of various physical factors. A low-temperature, high-frequency plasma was generated via cathode high-frequency glow discharge and used for the electrolysis of an aqueous solution of a low concentration of the strong electrolyte KH2PO4, with an electrolysis-activated solution named Plasmolite. The Plasmolite solution yielded a Raman (red) scattering spectrum with a maximum at 1,640 cm−1, which was associated with hydrogen atom vibrations, and other bands at 875, 930, 1,050, and 1,123 cm−1, which were associated with the aqueous electrolyte solution plasma treatment. Based on the goal of producing an optimal H2O2 concentration of 100 μM, two types of seeds were exposed to a Plasmolite-based 2 × 10–5 M KH2PO4 solution moisturizing medium for three days. Approximately 92% of the spring spelled seeds (grade “Gremme”) that were exposed to this test solution sprouted, compared with 76% of the seeds exposed to a control solution. The spring rye seeds (grade “Onokhoyskaya”) that were exposed to the test solution sprouted at a rate of 90% compared with 75% in the control. The percentage of seeds that sprouted with a root length of more than 6 mm was approximately 80% for the test solution, compared to 50% for the control. Based on these results, the use of Plasmolite is considered to be promising for the production of activated H2O2 for protecting plants and stimulating growth, particularly for enhancing the functions of K and P2O5 of fertilizers.

The possibility of increasing the concentration of hydrogen peroxide by using an electrolyte based on aqueous solutions of sodium sulfate or potassium sulfate salts is substantiated and implemented. Limit values of acidity and values of electrochemical potential of the activated aqueous solution are established. The obtained experimental confirmation of the possibility of the use of activated solution “Plasmolite” as a plant growth regulator.

No abstract

The results of an experimental study of the activation of weak aqueous solutions of a strong electrolyte with a low-temperature glow discharge plasma are presented. A method for producing an activated aqueous solution based on 0.9 % NaCl solution in a glow discharge plasma at atmospheric pressure is presented. The main characteristics of the activated aqueous solution, including the Raman spectrum at a wavelength λ = 514,53 nm, are shown. The results of experiments on the test objects give an assessment of the effectiveness of the effect of the obtained activated aqueous solution on various crops. In particular, experimental confirmation of the possibility of using this activated solution as a plant growth regulator was obtained.