Forest fertilization with paper mill residues


Research at Karlstad University shows that sludge and ashes as paper mill residues can be used as effective fertilizer. This involves biochar, that is, carbon from organic material returned to the forest and thus closing the cycle.

"Biochar has many on the environment," says Maria Sandberg, senior lecturer in environment and and research leader for the project. "Our show that by enriching biochar we can produce a very effective fertilizer for plants. If we bring biochar back to the forest, it will remain stable for a long time. In this way, carbon is bound up and there is less carbon dioxide in the atmosphere, which counteracts global warming."




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