UDC 631.452+631.445.41+631.8
DOI 10.36461/NP.2025.76.4.006

YIELD AND QUALITY OF AGRICULTURAL CROPS WITH THE FERTILIZER "ULUCHSHITEL" APPLICATION
I.S. Semenov, Postgraduate; E.N. Kuzin, Doctor of Agricultural Sciences, Professor;
A.N. Arefiev, Doctor of Agricultural Sciences, Professor;
E.E. Kuzina, Candidate of Agricultural Sciences, Associate Professor
Penza State Agrarian University, Penza, Russia,
tel. +7(412) 62-85-65, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

This article deals with the results of a three-year research (2023-2025) evaluating the effect of the fertilizer “Uluchshitel” application (manure, NPK doses equivalent to manure) on the yield and grain quality of winter and spring wheat, as well as maize. It was noted that the separate application of the examined fertilizer at doses of 750-1000 L/ha provided a significant but moderate increase in yield (by 13.1-18.5% for wheat and 15.0-16.7% for maize) compared to the unfertilized control, mainly due to the improvement of crop structure indicators (number of productive stems, ear/cob length, 1000-grain weight). The most favorable effect was obtained with the combined application of the fertilizer “Uluchshitel” (optimally 750-1000 L/ha) with organic or mineral fertilizers. It provided a synergistic effect, increasing the yield of winter wheat to 7.03 t/ha (an increase of 49.3%), maize to 8.43 t/ha (an increase of 38.4%), and spring wheat to 4.92 t/ha (an increase of 43.0%). Grain quality indicators (gluten and crude protein content) also increased most significantly in the combined application: protein yield per hectare for maize increased by 61.2-63.0% relative to the control. It was proved that the fertilizer “Uluchshitel” was as an effective ameliorant and activator of soil fertility, significantly increasing the utilization rate of nutrients from traditional fertilizers. The fertilizer “Uluchshitel” application in agricultural crop cultivation technology leads to more resource-efficient and adaptive agriculture by simultaneously improving the agrophysical, agrochemical, and biological properties of the soil.
Keywords: “Uluchshitel”, fertilizer, yield, number of productive stems, 1000-grain weight, gluten content.

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