Boost Soil Health and Carbon Content with Combined Use of Biogas Slurry and Biochar

What should I change in my Biochar Process

1. Fertilizer Modes: Replace part of your chemical fertilizer regimen with biogas slurry, either as a base fertilizer or as a topdressing.

2. Biochar Addition: Incorporate biochar into your soil at a level of 3% of the soil mass.

What could be the result of that?

• Soil Organic Carbon (SOC): When you switch from chemical fertilizers to biogas slurry, you may see an increase of SOC by about 9.92–15.52% for base application and 13.02–18.26% for topdressing. Adding biochar can ramp up SOC content by an impressive 52.56–58.94%.

• Other Soil Health Metrics: The application of biogas slurry can lead to an initial decrease in some soil health indicators like potassium permanganate-oxidized carbon (POXC) and soil protein (SP). However, these metrics recover and may even surpass levels achieved through chemical fertilization in the long run.

• Synergistic Effects: The combination of biogas slurry and biochar can yield a stronger increase in soil health and carbon content than when used individually.

From the original paper: https://www.sciencedirect.com/science/article/abs/pii/S0045653523024980 XiaoyangLiangabc, ChuanjuanWangabc, HaitaoWangac, XuefengQiuac, HongxuJiad, HuiJua, JiandongWangac