BOOK OF ABSTRACTS 169 IHSS&IWA26 / BRNO / CZECHIA / 23–28 August 2026 Friday, 28 August 2026 / Hall C Travel Awardee Presentations Figure 3: Effect of the fertilizer type on Yields of T. occidentalis 0 10 20 30 40 Yields (Tons ha-1) M-shoot R-shoot M-fruit R-fruit Sodium-based biochar (IFBiNa) raised soil pH from 4.06 to 4.72 while organic matter was increased from 1.67 – 2.01 cmolkg-1 in soil cultivated with T. occidentalis (Figure 2). Treatments IFBiNa and IFOFBiNa sequestered soil OC by 181% and 169% respectively while IFBiNa had the highest N increase of 12.8% relative to control. Exchangeable cations responded positively to Biochar- and Na-based fertilizers and were maintained above critical minimum levels. Treatment IFBiNa recorded highest number of leaves, vine lengths, shoot and fruit yields, in both main and residual experiments (Figure 3). Application biochar and Na-based fertilizer improve organic matter addition and fauna abundance in soil and thus nutrient uptake and yields of T. occidentalis. Significant increase in main and residual shoot biomass (M-shoot, R-shoot), main and residual fruit yields (M-fruit, R-fruit), respectively by biocharcontaining treatments were credited to SOM addition, mineralization and nutrient availability tendencies of biochar and fauna synergy. Conclusion The study concluded that Na-based biochar or its combination with organic fertilizer (IFBiNa or IFOFBiNa) improved soil biological and chemical functions leading to improved soil quality and productivity with resultant yields increase in T. occidentalis.
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