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Response of Precision-Planted Soybean Morphology, Seed Quality and Yield to Varying Seeding Rates under Central European Conditions

Author

Listed:
  • Antonín Procházka

    (Department of Agroecology and Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Pavel Procházka

    (Department of Agroecology and Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Kateřina Hamouzová

    (Department of Agroecology and Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Milan Kroulík

    (Department of Agricultural Machines, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Václav Brant

    (Department of Agricultural Machines, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic)

Abstract

In Central Europe, soybean is typically sown in narrow rows, whereas wide‑row precision planters offer more accurate within‑row spacing and greater flexibility for inter‑row cultivation and targeted applications. We evaluated whether soybean established with a 500‑mm precision planter responds to changes in seeding rate. A two‑year on‑farm strip trial (2023-2024) was conducted in Czechia with two determinate cultivars Satelia and Tertia in four target seeding rates (20, 40, 60, 80 germinating seeds/m 2 ). Plant morphology, seed yield, and seed composition were assessed. Branch number (3.1-1 pcs/plant for Satelia; 2.4 - 1.1 pcs/plant for Tertia), pod number (54.2 - 22.6 pcs/plant for Satelia; 53.4 - 28.8 pcs/plant for Tertia), and fertile nodes (11.6 - 9.3 pcs/plant for Satelia; 12.2 - 9.7 pcs/plant for Tertia) all decreased linearly with increasing seeding rate in both tested cultivars, indicating strong morphological compensation at low plant densities. Seed yield dry mass and seed composition were not significantly affected by seeding rate within the tested range, while year and cultivar effects were more pronounced for several seed quality components. These results suggest that soybean yield and quality are largely buffered against variation in plant population.

Suggested Citation

  • Antonín Procházka & Pavel Procházka & Kateřina Hamouzová & Milan Kroulík & Václav Brant, 2026. "Response of Precision-Planted Soybean Morphology, Seed Quality and Yield to Varying Seeding Rates under Central European Conditions," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 72(6), pages 380-388.
    • Handle: RePEc:caa:jnlpse:v:72:y:2026:i:6:id:179-2026-pse
    DOI: 10.17221/179/2026-PSE
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    References listed on IDEAS

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    1. Janusz Prusiński & Radosław Nowicki, 2020. "Effect of planting density and row spacing on the yielding of soybean (Glycine max L. Merrill)," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 66(12), pages 616-623.
    2. Magdalena Borowska & Janusz Prusiński, 2021. "Effect of soybean cultivars sowing dates on seed yield and its correlation with yield parameters," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 67(6), pages 360-366.
    3. Olena Sobko & Jens Hartung & Sabine Zikeli & Wilhelm Claupein & Sabine Gruber, 2019. "Effect of sowing density on grain yield, protein and oil content and plant morphology of soybean (Glycine max L. Merrill)," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(12), pages 594-601.
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