dc.contributor.author |
Dodo, D.E. |
|
dc.contributor.author |
Amanor, Y.J. |
|
dc.contributor.author |
Asamoah-Bediako, A. |
|
dc.contributor.author |
MacCarthy, D.S |
|
dc.contributor.author |
Dovie, D.B.K. |
|
dc.date.accessioned |
2019-11-25T12:12:06Z |
|
dc.date.available |
2019-11-25T12:12:06Z |
|
dc.date.issued |
2019-10-03 |
|
dc.identifier.other |
https://doi.org/10.1080/00103624.2019.1671443 |
|
dc.identifier.uri |
http://ugspace.ug.edu.gh/handle/123456789/33812 |
|
dc.description |
Research Article |
en_US |
dc.description.abstract |
The interactive effect of biochar, cattle manure and nitrogen (N) fertilizer on
the dynamics of carbon (C) mineralization and stabilization was investigated
in a sandy soil amended with three sole biochar (0, 20 or 40 t ha−1) or
manure (0, 13 or 26 t ha−1) and four combined biochar-manure levels (20 or
40 t ha−1 biochar plus 13 or 26 t ha−1 manure) with or without N fertilizer (0
or 90 kg ha−1) and CO2-C evolution measured over 54-d incubation period.
Biochar application, solely or combined with manure resulted in lower
applied C mineralized (ACM), indicating C sequestration in the soils.
Negative attributable effect (AE) of co-application of biochar and manure
on C mineralization was observed relative to the sole treatments. Both ACM
and AE were negatively correlated with C/N ratio and mineral N content of
the soil-mixtures (r ≥ – 0.573; p ≤ 0.01), indicating microbial N limitation.
The double first-order exponential model described CO2-C efflux very well
and indicated that ≥94% of C applied was apportioned to stable C pools
with slower mineralization rate constant and longer half-life. Cumulative
C mineralized and modeled C pools were positively correlated with each
other (r ≥ 0.853; p ≤ 0.001) and with readily oxidizable C of soil-amendment
mixtures (r ≥ 0.861; p ≤ 0.001). The results suggested that co-application of
biochar and manure can promote initial rapid mineralization to release
plant nutrients but sequester larger amounts of applied C in refractive
C pool, resulting in larger C sequestration in sandy soils. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS |
en_US |
dc.relation.ispartofseries |
50;20 |
|
dc.subject |
Biochar |
en_US |
dc.subject |
C mineralization |
en_US |
dc.subject |
C sequestration |
en_US |
dc.subject |
cattle manure |
en_US |
dc.subject |
kinetic models |
en_US |
dc.subject |
sandy soils |
en_US |
dc.title |
Kinetics of Carbon Mineralization and Sequestration of Sole and/or Co-amended Biochar and Cattle Manure in a Sandy Soil |
en_US |
dc.type |
Article |
en_US |