Long‐term effects of bone char and lignocellulosic biochar‐based soil amendments on phosphorus adsorption–desorption and crop yield in low‐input acidic soils
Soil Use and Management, 2021
Although the addition of biochar has been shown to reduce the phosphorus (P) adsorption capacity ... more Although the addition of biochar has been shown to reduce the phosphorus (P) adsorption capacity of soil, quantitative evidence of this has mainly been provided by incubation experiments and it is therefore essential to conduct long‐term field trials to draw general conclusions. It is largely unknown whether bone char has a greater effect than lignocellulosic biochar on P adsorption–desorption processes and crop yield. The aim of this study was to determine the long‐term (8 years) effect of bone char and biochar on P adsorption–desorption and crop yield in low‐input acidic soils. The results showed that bone char decreased the maximum P adsorption capacity (Qm) by 10% and increased the desorption capacity (Ds) by 150% compared with the control (i.e. without a soil amendment). The desorption ratio was highest for the bone char treatment (10.3%) and three times more than the control. Plant‐available P was seven times greater under bone char than the control. There was no variation in ...
Uploads
Papers by Bayu Dume