Abstract
Realization of the potential potato yield (35-40 t/ha) in the forest-steppe zone of the Middle Volga region is possible only with the introduction of adapted highly productive varieties and the use of varietal agricultural technology. The article presents the results of a study of the influence of area and nutrition on the productivity of the new early ripening potato variety Arosa. It was established that in the flowering phase there was an intensive growth, and the mass of the tubers was quite high and, depending on the planting density, it ranged from 121 to 148 g/bush. The pattern of decreasing tuber weight per course as planting density increased continued until harvesting. Before harvesting, it was 38,1 thousand - 845 g at planting density; 44,4 thousand - 778 g; 53,3 thousand - 675 g; 88,9 thousand tubers/ha - 444 g/bush or 401 g lower compared to the planting density of 38,1 thousand tubers/ha. It was revealed that on gray forest soils, as the number of planted tubers increased from 38,1 to 88,9 thousand pieces/ha, the yield of potato tubers of the Arosa variety increased from 30,45 to 36,65 t/ha, and the collection of starch from 4,46 to 5,53 t/ha. However, the maximum yield excluding seeds of 32,60 t/ha had a clearly defined maximum at a certain optimal planting rate – 53,3 thousand tubers/ha.
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