The comparative efficiency of different systems of fertilizer using on the dark gray podzolic soils of the Western region

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Visnyk LNAU: Agronomy 2019 №23: 261-264

The comparative efficiency of different systems of fertilizer using on the dark gray podzolic soils of the Western region

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

https://doi.org/10.31734/agronomy2019.01.261

Annotation

The article presents results of research on the influence of various fertilizer systems (mineral, organic, organo-mineral with different saturations of organic fertilizers) in the short rotary crop rotation on the dynamics of the main elements of nutrition in the soil on the productivity of agricultural crops for the fourth rotation of the crop rotation.

It is noted that the content of the main nutrients in the soil depends on the fertilizer system. The highest indices of nutrient content in the soil by provided organo-mineral fertilizer system with saturated crop rotation of 15 t/ha organic fertilizers. For the period of completion of the fourth rotation for this fertilizer system, the level of provision of ground with easyhydrolyzed nitrogen compounds amounted to 139, mobile phosphorus – 113, potassium metabolites – 109 mg/kg of soil. Compared to the first rotation, the content of nutrients in this variant increased, respectively, by 20, 12 and 10 mg/kg of soil (34,0, 14,2, 24,0 %).

Prolonged application of fertilizers in short-rotational field crop rotation positively influenced the formation of crop rotation crop yields. It is revealed that the best crop rotation performance for yield of grain units is characterized by organo-mineral system, which was provided by the dose of 40 t/ha manure, + 15 t/ha sideration, + 5 t/ha straw + N50P85K113. For the fourth rotation, the given fertilizer system provided productivity of crop rotation of 35,3 t/ha of grain units, what was higher on 7,7 t/ha of grain units against the mineral fertilizer system and 1.7 t/ha of grain units from the organic fertilizer system. Growth of grain yields relative to control increased by 1.8 times and amounted to 16,2 t/ha. In the fertilizer system, the yield increase was 8,5–16,2 t/ha.

With each rotation of crop rotation, its performance increases. The researches found that on dark-gray podzolized soils in the conditions of the Western Forest-steppe Ukraine in short-rotation field crop rotations with intensive anthropogenic loading, the saturation with organic fertilizers should be not less than 15 t/ha of crop rotational area. At this level of fertilizer using, soil fertility and productivity of crop rotation increases with each rotation.

The research has established that fertilizer systems have a significant effect on the productivity of crop rotation crops. The highest level of productivity in the conducted studies was noted organo-mineral fertilizer system with saturation of crop rotation 15 t/ha of organic fertilizers. During the fourth rotation of crop rotation, this system of fertilizers provided the highest harvest of grain units – 35,3 t/ha with the dynamics of productivity growth from rotation to rotation.

Key words

systems of fertilizer using, field crop rotation, productivity, dark gray podzolized soil, indices of prolificacy, rotation of crops, elements of nourishment

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