Biodegradation measurements confirm the predictive value of the O:C‐ratio for biochar recalcitrance. Issue 4 (3rd July 2014)

• Record Type: Journal Article
• Authors: Bai, Mo; Wilske, Burkhard; Buegger, Franz; Bruun, Esben Wilson; Bach, Martin; Frede, Hans‐Georg; Breuer, Lutz
• Is Part Of: Journal of plant nutrition and soil science. Volume 177:Issue 4(2014:Aug.)
• Page Start: 633
• Page End: 637
• Publication Date: 2014-07-03
• Subjects: Plants -- Nutrition -- Periodicals; Soil science -- Periodicals; 630
• DOI: 10.1002/jpln.201300412
• Languages: English
• ISSNs: 1436-8730

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Suitable predictors of degradability are sought to support the identification of biochars with large potential to increase C sequestration in soils. We determined the biodegradation of 9 chars from hydrothermal carbonization and pyrolysis in two agricultural soils. The 200‐ and 115‐day degradation correlated strongly with the O:C‐ and slightly with the H:C‐atomic ratio of 9 and 14 biochars, respectively. Highest temperature treatment and ash content did not show similar correlations.</p> </abstract>