Study of the Influence of Pre-Sowing Electromagnetic Treatments on the Length and Mass of Cotton Plant Sprouts After Long-Term Storage

In this paper, the laboratory test results of the pre-sowing electromagnetic treatment of cotton seeds of the variety “Chirpan 539°”, performed after long storage of the seeds prior to the electromagnetic impact, are described. The presowing electromagnetic treatments of seeds stored for 3 years resulted in an increase in their germination percentage by $(107.8 \ldots 110.8) \% / \mathrm{C}$ compared to the control seeds. After a storage period of 1 year and following the electromagnetic treatment, the lengths of the sprouts increased up to $112.1 \% / \mathrm{C}$ compared to control seeds. To achieve a complex effect on the growth of the sprouts in length and mass, it was proposed that the three-step pre-sowing electromagnetic treatment be carried out using values of the controlled variables voltage $U, \kappa V$ and duration of exposure $\tau, \mathrm{s}$, as follows: $\mathrm{U}_{\mathrm{l}}=8 \mathrm{KV}$ and $\tau_{1}=5 \mathrm{~s}, \mathrm{U}_{2}=6.5 \kappa V$ and $\tau_{2}=25 \mathrm{~s}, U_{3}=5 \kappa V$ and $\tau_{3}=35 \mathrm{~s}$.