The article presents the results of five-year research conducted in the production conditions of the Nizhny Novgorod region based on the seed-growing enterprise limited liability company "Aksentis". Seed potatoes of the VR-808 variety, elite reproductions, were put during harvesting in 8 different container-type storage facilities of 50 tons each. Storage conditions in each potato storage were individual and were not repeated. They differed in the duration of the drying regime (5 or 10 days), the temperature of the treatment period (10 or 15°C) and the rate of daily decrease in the temperature of the potato tubers during the cooling period (by 0.3 or 1°C per day). During the harvesting of potatoes in the field, 6 samples of 25 kg each were taken from each variant to determine the number of tubers with mechanical damage. At the same time, 6 samples of potatoes were laid for long-term storage, weighing their weight in advance. After 4 months, the samples were extracted, weighed to determine shrinkage, and tuberous analysis for dry rot was performed. It has been established that an increase in the drying time of potatoes for more than 5 days contributes to the spread of the lesion mechanically damaged potato tubers by dry rot by 12-14% and increases the loss of natural weight of tubers by 1.4-1.8%. The duration of wound healing of mechanically damaged tubers with a decrease in temperature in the storage from 15 to 10°C has a clear tendency to increase. The rate of daily decrease in temperature in storage by 0.3°C per day in comparison with a decrease in temperature by 1°C when storing seed potatoes of the VR-808 variety in storage facilities without refrigeration systems is more effective and allows to reliably reduce tuber shrinkage by 0.8-1% of tuber weight on the date of potato storage.