The article presents the yield of mid-season potato of the Lugovskoi variety, depending on the tuber planting rate and weight. The objective of the research is the adjustment of techniques in the cultivation of a mid-season potato variety with a yield of 30 t/ha. The experiment was conducted on a farm in the Middle Urals region in 2001-2003. The soil of the experimental plot is sod-podzolic, light loamy with a low humus content, with slightly acidic reaction, a high content of phosphorus and medium potassium. Weather conditions during the years of research were contrasting and affected potato productivity in different ways. The planned yield was achieved in small seed tubers with a thickening of 47.6 thousand, medium and large 35.7 thousand tubers/ha. To achieve the goal, small tubers formed 137.7 thousand stems, medium tubers - 146.5 thousand stems, and large tubers - 181.1 thousand stems.