The Influence of Hybrids, Growth Regulators and Organomineral Fertilizers on the Grain Sorghum Yield Formation

In the conditions of climate aridization, agricultural producers need alternative crops in their crop rotations, alongside traditional ones, to ensure a guaranteed harvest. The relevance of this research stems from the need to enhance the technology of grain sorghum cultivation through the application of growth regulators and organomineral fertilizers. The scientific novelty lies in the study of these growth regulators and their effect on grain sorghum productivity formation.

The field experiment was conducted in 2022 at the Gornaya Polyana Educational, Scientific and Production Center (ESPC) of the FSBEI HE Volgograd SAU, on light chestnut soils. The experimental design included three zoned hybrid variants and seven variants involving the use of growth regulators and organomineral fertilizers. Observations and analyses were carried out using standard agronomic methodologies.

As a result of the study, it was found that the combined use of the Fertigrain Start Plus growth regulator for seed treatment and the Fertigrain Foliar Plus organomineral fertilizer led to an average yield increase of 10–19% across all hybrids studied. Among them, the Bianca hybrid demonstrated the highest responsiveness to the treatment, producing yields ranging from 1.54 to 2.68 t/ha depending on the year’s conditions.

These findings are particularly relevant for agricultural producers in the districts of the Volgograd Region that face challenging climatic conditions and have a limited crop selection due to soil and environmental constraints.