UDC 631.81
In the period from 2020 to 2022, in the conditions of radioactively contaminated sod-podzolic sandy loam soils of the Novozybkovsky district of the Bryansk region, scientific studies were carried out to study the effect of improving the fertilizer system on changes in the elemental composition of tubers and the balance of nutrients during potato cultivation. As a result of research, it was found that in changing agroclimatic and soil conditions, when improving the potato fertilization system, trends or a significant increase in the content of macronutrients in tubers occur. The use of the biological preparation Gumiton together with mineral fertilizer negatively affects the balance of nutrients in comparison with the fertilizer system without a biological preparation, which is associated with an increase in yield under the action of Gumiton, and with this an increase in the removal of nutrients without additional replenishment. It was revealed that the removal of nitrogen, phosphorus and potassium depended on the yield of potato tubers and their elemental composition, which in turn hung from the level of mineral nutrition. It was determined that the use of chemicalization agents in the cultivation of potatoes improves the phosphorus and potassium regimes of sod-podzolic sandy loam soil, makes it possible to maintain the balance of phosphorus and potassium at a positive level, which becomes especially important in conditions of radioactive contamination of the territory.
sistema udobreniya, kartofel', sovershenstvovanie, balans elementov, dernovo-podzolistaya supeschanaya pochva, zapad Bryanskoy oblasti
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