Premium
Short‐term releases of CO 2 from newly mixed biochar and calcareous soil
Author(s) -
Cardelli R.,
Becagli M.,
Marchini F.,
Saviozzi A.
Publication year - 2016
Publication title -
soil use and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.709
H-Index - 81
eISSN - 1475-2743
pISSN - 0266-0032
DOI - 10.1111/sum.12306
Subject(s) - biochar , calcareous , microcosm , mineralization (soil science) , chemistry , environmental chemistry , soil water , agronomy , environmental science , soil science , botany , biology , organic chemistry , pyrolysis
The work aimed to quantify native organic C mobilized in one calcareous soil in the 21 days after addition of biochar at a range of large to very large applications. The experiment was carried out in unplanted microcosms, and CO 2 flux was used as a measure of net mineralization. A rapid methodological approach, which does not require 13 C as a tracer, was used to assess any priming effects induced by the biochar. The amount of CO 2 ‐C mobilized was small relative to the amount of biochar C and proportional to the amount of the biochar added. The additional CO 2 ‐C was similar to the content of the water‐soluble organic carbon in the biochar added with each application. No interaction with native soil C, that is priming effect, was observed.