ВПЛИВ ЗАСТОСУВАННЯ БІОПРЕПАРАТІВ НА СТРУКТУРНІ ПОКАЗНИКИ BRASSICA NAPUS L.

O.S. Drobit; V.S. Balabash

doi:10.32848/agrar.innov.2026.37.8

O.S. Drobit Institute of Climate-Oriented Agriculture National Academy of Agrarian Sciences of Ukraine https://orcid.org/0000-0002-3633-5828
V.S. Balabash Institute of Climate-Oriented Agriculture National Academy of Agrarian Sciences of Ukraine https://orcid.org/0009-0006-4178-3242

DOI: https://doi.org/10.32848/agrar.innov.2026.37.8

Keywords: oil crops, moisture supply conditions, biological product, application timing, structural components, seed productivity

Abstract

The purpose to determine the dynamics of structural element formation and seed productivity of winter rapeseed in relation to the use of biological preparations and their application timing under irrigated and non-irrigated conditions in southern Ukraine. Research methods and materials. Field, visual, mathematical-statistical, and computational-comparative methods were used. Results. Optimal conditions for the growth and development of winter rapeseed plants were achieved with irrigation (Factor A), resulting in an average seed yield of 2.66 t/ha (LSD₀₅A = 0.09 t/ha). Regarding Factor B (biological product), the highest seed yield – 2.29 t/ha – was obtained with the application of Planriz BT (LSD₀₅B = 0.02 t/ha). Optimal conditions for the growth and development of Brassica napus L. plants were observed with three applications of the products (Factor C), yielding an average of 2.22 t/ha (LSD₀₅C = 0.03 t/ha). Averaged over the 2024–2026 period, the best yield structure components were obtained through the use of irrigation and the application of the biological product Planriz during the rosette formation, stem elongation, and budding stages. At the same time, the plant density before harvest was 52.1 plants/m², the number of pods per plant was 181.2, the number of seeds per pod was 23.2, and the 1000-seed weight was 4.40 g. This variant also yielded the highest seed productivity – 2.89 t/ha. Conclusions. The research results were obtained from field experiments established and conducted in accordance with standard methodologies for both irrigated and non-irrigated conditions. Optimal parameters for winter rapeseed cultivation technology were determined, enabling increased seed yield and improvements in yield structure components: plant density at harvest, number of pods per plant, number of seeds per pod, and 1000-seed weight.

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EFFECT OF THE APPLICATION OF BIOPREPARATIONS ON THE STRUCTURAL PARAMETERS OF BRASSICA NAPUS L.

Abstract

References