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Description
The electron density, energy consumption per cycle, and power dissipation of plasma generated by a dielectric barrier discharge (DBD) at atmospheric pressure and room temperature were measured across a range of applied voltages. The impact of non-thermal plasma (NTP) on the germination of coriander (Coriandrum sativum) and cucumber (Cucumis sativus) seeds was thoroughly investigated, alongside assessments of seedling relative length and weight, plant diameter, and leaf count. An extensive electrical characterization of the plasma produced by DBD was conducted with varying voltages. The optimal voltage for seed treatment was determined to be 15.65 kV (200 divisions) among nine different applied voltages. Argon gas at a flow rate of 5 liters per minute was used to generate the DBD plasma. Coriander and cucumber seeds were exposed to the plasma for 3, 5, and 7 minutes, and 1, 3, 5, and 7 minutes, respectively. Key parameters such as water absorption capacity, mass loss, germination percentage, and vigor index were evaluated. Plasma treatment markedly enhanced germination-related metrics for both coriander and cucumber seeds. This included improvements in germination percentage, fresh and dry weight, vigor index, and various seedling growth characteristics such as length, width, and weight. Consequently, a significant increase in the yield of both coriander and cucumber was observed.
