Study after planting soybeans that control plot (BC0) with the total N, OM, available P and exchangeable K under the soil after planting soybeans with a pH no difference in treatment. Compared to before, the soybean crop. While the amount of OM is increasing in all treatments compared to the soil before planting. But the increase is not statistically significant. Although bio-char is organic matter that has high carbon content. On average, the carbon content of 80 (Winsley, 2007), but there are so stable that they Biobriquette can remain in the soil for a long period (Lehmann, 2007), the coal, bio on the plantation. It does not add organic matter to the plant can be utilized directly. But as organic matter helps retain carbon in the soil by adding organic matter to another.
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