An Activated Potassium Phosphate Fertilizer Solution for Stimulating the Growth of Agricultural Plants

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 H 2 O 2 and NO and that between H 2 O 2 and Ca 2+ 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 KH 2 PO 4 , 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 H 2 O 2 concentration of 100 μM, two types of seeds were exposed to a Plasmolite-based 2 × 10 –5 M KH 2 PO 4 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 H 2 O 2 for protecting plants and stimulating growth, particularly for enhancing the functions of K and P 2 O 5 of fertilizers.

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