Char application restores soil carbon and productivity

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Intensively tilled soils have lost up to 50% of their original C with the attendant degradation in soil properties and productivity. Restoring the C lost with current conservation practices (i.e., no-till, cover crops) often takes decades. Applying high-C coal combustion residue from sugar beet (Beta vulgaris L.) processing factories, known as char, may rapidly restore soil C and productivity in degraded croplands.

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