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Biochar as Soil’s Best Friend – A Review

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Figure

Figure 1. (a) Poor nutrient oxisols (left) and fertile Terra preta transformed oxisols (right) (b) Close-up dark fertile soil.
Figure 2. Scanning electron microscopy (SEM) images of (a) switchgrass feedstock, (b) slow pyrolysis biochar, (c) gasification and (d) fast pyrolysis biochar (pictures from Brewer et al., 2009) showeddifference in porous structure that effects the quality

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