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What is Biochar? Randall Grahm talks about how activated charcoal incorporated into compost and then soil can help with water retention and the “amplification with terroir” as it promotes root growth and mineral uptake.
See all of our videos with winemaker Randall Grahm of Bonny Doon Vineyards: http://www.youtube.com/playlist?list=PLddUmDhg4G_KZtfJrMImJN85C5VQ6GADm
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