Effects Of Mixed Hardwood And Sugarcane Biochar As Bark-Based Substrate Substitutes On Container Plants Production And Nutrient Leaching
文献类型: 外文期刊
作者: Yu, P; Huang, L; Li, QS; Lima, IM; White, PM; Gu, MM
作者机构:
关键词: Biochar; No3-N; Plant; Substrate; Container; Production
期刊名称: AGRONOMY-BASEL
ISSN:
年卷期: 2020 年 10 卷 2 期
页码:
收录情况: JCR(2021版)
摘要: Biochar (BC) has the potential to replace bark-based commercial substrates in the production of container plants. A greenhouse experiment was conducted to evaluate the potential of mixed hardwood biochar (HB) and sugarcane bagasse biochar (SBB) to replace the bark-based commercial substrate. A bark-based commercial substrate was incorporated with either HB at 50% (vol.) or SBB at 50% and 70% (vol.), with a bark-based commercial substrate being used as the control. The total porosity (TP) and container capacity (CC) of all SBB-incorporated mixes were slightly higher than the recommended value, while, the others were within the recommended range. Both tomato and basil plants grown in the BC-incorporated mixes had a similar or higher growth index (GI), leaf greenness (indicated by soil-plant analyses development), and yield than the control. The leachate of all mixes had the highest NO3-N concentration in the first week after transplantation (1 WAT). All BC-incorporated mixes grown with both tomato and basil had similar NO3-N concentration to the control (except 50% SBB at 1 and 5 WAT, and 50% HB at 5 WAT with tomato plants; 50% SBB at 5 WAT with basil plants). In conclusion, HB could replace bark-based substrates at 50% and SBB at 70% for both tomato and basil plant growth, without negative effects.
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