INFLUENCE OF FERTILIZER SYSTEMS ON THE DYNAMICS OF THE NUTRIENT REGIME OF DARK GRAY PODZOLIC SOIL UNDER SUGAR BEET

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Visnyk LNAU: Agronomy 2021 №25: 151-153

INFLUENCE OF FERTILIZER SYSTEMS ON THE DYNAMICS OF THE NUTRIENT REGIME OF DARK GRAY PODZOLIC SOIL UNDER SUGAR BEET

Poliukhovych M., Candidate of Agricultural Sciences
ORCID ID: 0000-0001-7173-5678
Lviv National Agrarian University

https://doi.org/10.31734/agronomy2021.01.151

Annotation

To increase the volume of agricultural production, improve its quality, increase soil fertility, it is necessary to increase the supply of nutrients to the soil and create optimal conditions for their assimilation by plants. The scientifically based system of applying fertilizers allows not only increasing productivity and quality of agricultural products, but also expanded reproduction of soil fertility. The results of the study of the influence of fertilizer systems on the dynamics of soil nutrient regime under sugar beet are presented in the article. The research was conducted on a long stationary field of the Department of Agrochemistry and Soil Science of Lviv National Agrarian University on dark gray podzolic soil.

The experiment was set up on four crop rotation fields with the following crop rotation: winter wheat – sugar beet – barley with clover sowing – meadow clover. The scheme of the experiment includes options with fertilizer systems. Mineral, organic and organic-mineral systems with different saturation with organic fertilizers were used in the experiment.

It was found that the content of organogenic elements in the soil depends on the fertilizer system and the phase of development of sugar beet plants. The highest level of soil supply with organic elements was observed at the beginning of the vegetation period of sugar beet with a seasonal decrease in the stages of organogenesis. The best indicators of nutrient accumulation in the soil were provided by organo-mineral fertilizer systems. The greatest advantage was the fertilizer system with organic saturation of 15 t/ha of crop rotation area and application of mineral fertilizers in the norm N50P85K113. At this level of fertilizer, the content of nutrients (nitrogen, phosphorus, potassium) before sowing sugar beet was 149, 135 and 129 mg/kg of soil. The supply of organogenic elements in this variant was much higher than in the studied fertilizer systems throughout the growing season of sugar beet and was kept at a fairly high level.

Key words

fertilizer system, sugar beet, nutrient regime, dark gray podzolic soil, chements of nutrients

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