Influence of rice hull biochar and cedar bark media on strawberry productivity and carbon sequestration potential in hydroponic systems
2026 年 19 巻 2 号 p. 87-95
詳細
2026 年 19 巻 2 号 p. 87-95
This study evaluated the influence of rice hull biochar (RHB) and cedar bark media (CBM) as sustainable substrates for hydroponic strawberry cultivation. The total yield from virgin CBM was 413 g/plant and that from virgin RHB was 354 g/plant. Used CBM increased the yield by 4 % (429 g/plant) while used RHB increased yield by 18 % (419 g/plant) compared to the virgin, with no significant substrate differences. Fruit yields and physical properties were strongly correlated, particularly with particle density (R2 = 0.573). After 7 years of cultivation, plant residues had accumulated in both substrates. Uncarbonized carbohydrates in RHB indicated 25.71 % and 0.40 kg/kg of carbonized carbon retained, which was 98.4 % compared to the virgin RHB. CBM decomposed overtime, limiting its long-term stability.
