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DYNAMICS OF POTATO NUTRIENTS DEPENDING ON THE SEEDING DEPTH OF TUBERS AND ESTIMATED NORMS OF FERTILIZERS

The article discusses the impact of tuber planting density and fertilizer design norms on the dynamics of potato nutrients in the southeastern part of Volga-Vyatka zone. The density of planting tubers and the calculated norms of fertilizers have a direct impact on the dynamics of the nutritional elements of the potato content and removal of mineral nutrition elements by the potato plants on the leached chernozem of the south-eastern part of Volga-Vyatka zone. The accumulation of elements of mineral nutrition is also significantly influenced by the weather conditions formed during the growing season of potato plants. Potatoes are demanding on soil fertility. With a good harvest, it consumes and alienates a large amount of nutrients from the soil. With an increase in the density of planting tubers and the calculated norms of fertilizers, respectively, the removal of mineral nutrients also increases. Studies have shown that the highest nitrogen content in the soil was observed during the beginning of the growing season of potato plants - at the time of emergence. The maximum concentration of phosphorus reached in the phase of budding and flowering of potatoes. During the growing season of potato plants, the content of exchangeable potassium increases and reaches a maximum value in the budding phase. After flowering, the indicator of potassium in the soil began to decline and at the time of harvesting reached a minimum value.