Co-pyrolysis of chicken manure with tree bark for reduced biochar toxicity and enhanced plant growth in Arabidopsis thaliana.

Furthermore, the importance of the P concentration for plant growth in our experiment is indicated by a trend towards significance for the correlation between the P concentration in the medium and the resulting fresh weight (r = 0.43; p = 0.068).

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There was even a decreasing trend with increasing biochar concentrations, evidencing some uptake of this element by the biochar.

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On the other hand, an increasing trend in root length was visible with rising biochar concentrations when seedlings were treated with BC-100-0, with a significantly longer root when 0.25 or 0.50 wt% was added to the reference growth medium.

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