Switzerland has become the first country in Europe to officially approve the use of certified biochar in agriculture, with the Federal Ministry of Agriculture issuing its approval on 23 April 2013. In it, the Delinat Institute is given responsibility for controlling biochar quality and the sustainability of its production.

http://www.ithaka-journal.net/schweiz-bewilligt-pflanzenkohle-zur-bodenverbesserung?lang=en