Soybean productivity depending on the level of mineral fertilizers on dark grey podzolic soils

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Visnyk LNAU: Agronomy 2019 №23: 257-260

Soybean productivity depending on the level of mineral fertilizers on dark grey podzolic soils

Parkhuts B., Candidate of Agricultural Sciences
ORCID ID: 0000-0001-9874-1744
Lviv National Agrarian University

https://doi.org/10.31734/agronomy2019.01.257

Annotation

The article presents the results of research on the influence of various norms of mineral fertilizers on the yield and quality of soybean of the Legenda variety in the conditions of the Sokal district of Lviv region on dark gray podzolic soils. It was established that with the application of mineral fertilizers with the norm of N34R57K90 the highest yield was obtained at 28,5 centners/ha with an increase to control of 10,0 centners/ha or 54,1 %. With the introduction of the norm of mineral fertilizers N17P38K60 it was received a lower yield of 26,2 centners/ha with an increase to control 7,7 centners/ha, or 41,6 %. As a result of the comparison of variants (P38K60, N17P38, N17K60), the highest yield was 24,1 centners/ha with an increase of 5,6 centners/ha in the variant of the introduction of N17P38.

With the introduction of the norm of mineral fertilizers of N34R57K90, the highest content of crude protein was 37,7 % and its collection was 10,8 centners/ha with an increase to control of 5,2 centners/ha. Also, in this variant, the highest collection of fat was obtained at 4,99 centners/ha with an increase to 0,77 centners/ha. The highest fat content of 22,8 % was obtained in the control version without the introduction of mineral fertilizers. The lowest fat content of 17,5 % was obtained in the version of the introduction of mineral fertilizers with the norm of N34R57K90.

According to the results of the correlation and regression analysis, the multiple determination coefficient of 0,95 reflects the close dependence of yield on the content of crude protein in soybean grains and 0,88 of the close dependence of yield on the fat content of soybeans.

It has been established that as the soybean yield increases, the indicators of economic efficiency increase. The highest conditionally net profit of 11400 UAH/ha and the level of profitability of 69,0 % were obtained in the version of the experiment with the introduction of mineral fertilizers with the norm of N34Р57К90. The lowest conditionally net profit of 5365 UAH/ha and the level of profitability of 42,0 % were obtained in the control version of the experiment without the introduction of mineral fertilizers.

Key words

soybean, fertilizer, mineral fertilizers, yield, crude protein, fat, conditionally net profit, level of profitability

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