In the presented work attempts have been made to explore effectiveness of the sugar beet (Beta vulgaris L.) seeds priming process in relation to seed quality and environmental conditions. This study was conducted in three different field stations in the years 2013–2015 using two lots of sugar beet seeds of the variety Janosik that differed in their level of vigour. In the laboratory and phytotron experiments, pelleted and non-pelleted seeds were used while in the field experiments only pelleted seeds were used. Seed priming was carried out using two patented technologies based on the solid matrix priming method. The results of this study indicate that pelleting can reduce both seed viability and rate of germination, especially in the early stages. Both priming methods positively influenced seed germination ability and speed. The efficiency of priming was higher in seeds with lower vigour than those with higher vigour. It follows that priming seeds, especially those with lower vigour is particularly efficient. As a result, seed loss during treatment can be reduced. The obtained data indicate that priming reduces the differences in germination and the course of emergence caused by different levels of seed vigour and germination conditions. The higher vigour of seeds caused by priming was associated with the acceleration of leaf development and the increase in plant dry matter during the growing season. As a result, seed priming contributes to a significant increase in the technological yield of sugar. It should also be noted that the average weight of single root is less variable during harvesting.