Аннотация:Studies of the influence of negative corona discharge on the contamination of sunflower seeds have been conducted. Treatment of seeds of this crop with cold plasma corona discharge helps to reduce their infection with fungi that cause plant deseases. As the duration of exposure increases, the effectiveness of cold plasma increases. With the exposure of 180 and 240 minutes, the negative corona reduces the rust contamination of medium size sunflower seeds by 100%,, but was ineffective on large ones.DOI : 10.51368/2949-561X-2025-6-21-23