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Response of Sunflower (Helianthus annuus L.) to Application of Bioactive Humic Substances

Authors

  • Dávid Ernst Slovak University of Agriculture in Nitra, Faculty of Agrobiology and Food Resources, Institute of Agronomic Sciences, Slovak Republic
  • Alexandra Zapletalová Slovak University of Agriculture in Nitra, Faculty of Agrobiology and Food Resources, Institute of Agronomic Sciences, Slovak Republic
  • Ivan Černý Slovak University of Agriculture in Nitra, Faculty of Agrobiology and Food Resources, Institute of Agronomic Sciences, Slovak Republic
  • Tomáš Vician Slovak University of Agriculture in Nitra, Faculty of Agrobiology and Food Resources, Institute of Agronomic Sciences, Slovak Republic
  • Marek Kolenčík Slovak University of Agriculture in Nitra, Faculty of Agrobiology and Food Resources, Institute of Agronomic Sciences, Slovak Republic
  • Mária Vicianová Slovak University of Agriculture in Nitra, Faculty of Agrobiology and Food Resources, Institute of Agronomic Sciences, Slovak Republic
  • Ladislav Ducsay Slovak University of Agriculture in Nitra, Faculty of Agrobiology and Food Resources, Institute of Agronomic Sciences, Slovak Republic
  • Rastislav Bušo National Agricultural and Food Centre, Research Institute of Plant Production in Piešťany, Department of Growing Systems, Slovak Republic

Keywords:

adaptogens, biological material , oil content, stimulators, yield of seeds

Abstract

Sunflower is the second most cultivated oilseed crop in Slovakia. It remains an attractive crop in primary agricultural production 
because of the many benefits it provides. The study aimed to assess the impact of biological material (Subaro HTS, Sumiko HTS) 
and products containing bioactive substances (Humix® Universal, Humix Bór, Energen Fulhum Plus and Energen Stimul Plus) 
on sunflower production in the 2021–2022 growing seasons. A partial aim was to investigate the possible effect of adaptogens 
on a plant organism, specifically sunflower. The field trials were designed using the perpendicularly split block method with 
a randomized block complete design on an experimental basis of SAU in Nitra, located in a warm maize production area. The 
variability of weather conditions was statistically demonstrated on the achieved production parameters. Weather conditions 
were more favorable in 2022 regarding seed yield 3.25 ±0.31 tons per hectare (t.ha-1) and oil content 47.14 ±0.90%. Evaluation 
of biological material confirmed that the hybrid Sumiko HTS achieved significantly higher yields of seeds 3.29 ±0.28 t.ha-1 and oil 
content 46.66 ±1.32% compared to Subaro HTS. The utilization of bioactive substance combinations exhibited significant impact 
on sunflower production. Specifically, superior values in the examined parameters, such as seed yield 3.30 ±0.26 t.ha-1 and oil 
content 46.99 ±1.12%, were observed in instances where Energen Fulhum Plus + Energen Stimul Plus preparations, inclusive of 
adaptogens, were applied during the growth stage BBCH 18.

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2024-04-05 — Updated on 2024-04-05

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Plant Science