Uman NUH | today: 09/23/2020

Assimilation of basic nutrients from soil and mineral fertilizers by corn

Author(s) Hospodarenko G.M., Doctor of Agricultural Sciences, Professor, Uman National University of Horticulture, Ukraine
Prokopchuk I.V., Candidate of Agricultural Sciences, Associate Professor of Soil Science and Agricultural Chemistry, Uman National University of Horticulture
Category The Agronomy
year 2019 issue Випуск 95 Частина 1
pages 76-89 index UDK 633.15
DOI 10.31395/2415-8240-2019-95-1-76-89 (Link)
Abstract The article found that the chemical composition of the crop depends on the application of fertilizers in rotation. The components of the crop differed significantly in nitrogen content. Its largest content was grain - 1.47–1.71% in terms of dry matter, and much less was contained in the leaf-stem weight of corn - 0.48–0.78%, depending on the fertilizer variant. Due to fertilization, the nitrogen content of corn increased by 16% and 63%, respectively. The use of potassium fertilizers at a dose of 80 kg / ha a year on nitrogen-phosphorus background (variant N110P60K80) increased the potassium content of corn by no more than 8%. In the deciduous mass of culture this increase was more significant - by 11%. With the main production of corn from the soil it makes the most nitrogen and the least potassium, with the non-market part of the crop potassium is carried out even more than nitrogen. It should also be noted that a lot of phosphorus is taken from the soil - 23–72 kg P2O5 / ha depending on the fertilizer variant. The application of 1 ha of crop rotation area N110P60K80 compared to the areas without fertilizers increased the removal of maize nitrogen by 258%, phosphorus - 230 and potassium - by 208%. For the formation of the crop unit of the commodity and the corresponding amount of non-marketable production of corn assimilates the batteries in the following ratio N: P2O5: K2O: - 1: 0.3: 0.8. The indicator of relative carrying out of the basic nutrients of different parts of the corn crop has unequal stability.
Key words corn, fertilizers, basic nutrients, soil, grain, leaf-stem mass
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