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The Role of Foliar-Applied Silicon in Improving the Growth and Productivity of Early Potatoes

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  • Wanda Wadas

    (Institute of Agriculture and Horticulture, Faculty of Agricultural Sciences, University of Siedlce, 14 B. Prusa, 08-110 Siedlce, Poland)

  • Tomasz Kondraciuk

    (Institute of Agriculture and Horticulture, Faculty of Agricultural Sciences, University of Siedlce, 14 B. Prusa, 08-110 Siedlce, Poland)

Abstract

Climate change is leading to a decline in global potato production. To ensure food security, it is essential to adapt cultivation practices to the changing climate. The effects of foliar-applied silicon on potato growth and productivity under various hydrothermal conditions were investigated. Potato plants were treated with three Si-based biostimulants: Actisil (6 g of Si and 20 g of Ca per liter; choline-stabilized orthosilicic acid; Chol-sSa + Ca); Krzemix (6 g of Si per liter; choline-stabilized ammonium metasilicate; Chol-sNH 4 -Sil); and Optysil (93 g of Si and 24 g of Fe per liter; sodium metasilicate and iron chelate Fe-EDTA; Na-Sil + Fe-EDTA). Biostimulants were foliar-applied twice, at the leaf development stage (BBCH 13–15) and two weeks after the first treatment, at 0.5 L/ha in each treatment. The plants treated with biostimulants were taller and produced greater above-ground biomass and a higher tuber weight than the control plants (without a biostimulant). As a result, the total tuber yield was higher, on average, by 10% to 13% and the marketable tuber yield by 11% to 15%. The plant-growth-promoting and yield-increasing effects of the Si-based biostimulants depended on the hydrothermal conditions during potato growth. Chol-sSA + Ca (Actisil) applications were the most effective. Na-Sil + Fe-EDTA (Optysil) produced better results during a warm and very dry year, while Chol-sNH 4 -Sil (Krzemix) was effective during colder years with a periodic water deficit. Silicon foliar application can be a new method for increasing early crop potato yields under water shortage conditions.

Suggested Citation

  • Wanda Wadas & Tomasz Kondraciuk, 2025. "The Role of Foliar-Applied Silicon in Improving the Growth and Productivity of Early Potatoes," Agriculture, MDPI, vol. 15(5), pages 1-17, March.
    • Handle: RePEc:gam:jagris:v:15:y:2025:i:5:p:556-:d:1606186
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    References listed on IDEAS

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    1. Sheng Li & Yulia Kupriyanovich & Cameron Wagg & Fangzhou Zheng & Sheldon Hann, 2023. "Water Deficit Duration Affects Potato Plant Growth, Yield and Tuber Quality," Agriculture, MDPI, vol. 13(10), pages 1-16, October.
    2. Wagg, Cameron & Hann, Sheldon & Kupriyanovich, Yulia & Li, Sheng, 2021. "Timing of short period water stress determines potato plant growth, yield and tuber quality," Agricultural Water Management, Elsevier, vol. 247(C).
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