Re: Biochar Sequestration - Must it be Buried


Frank Strie
 

Good point Kevin McLean,
As I see it, the key issue is that the Biochar applied is not going to be oxidised back to Co2 (that it is not burned to ash by fire) .
To apply (ideally locally made) clean = nutrient poor  Biochar to the soil surface, to work as a weedy plant growth retardant makes a lot of sense.
The same application on the footpath in a garden setting , say between raised garden beds or in a greenhouse tunnel to keep weedy grass down.
Better than energy intensive toxic herbicides, such potentially imported from far away sources provide a great opportunity as a carbon sink.
Just what came to mind reading your question
just Frank again
 

 

From: main@Biochar.groups.io <main@Biochar.groups.io> On Behalf Of K McLean
Sent: Wednesday, July 7, 2021 9:00 PM
To: main@biochar.groups.io
Subject: [Biochar] Biochar Sequestration - Must it be Buried

 

List,

 

Must biochar be buried for the carbon to be considered sequestered?  Or, can the carbon be considered sequestered once the biochar is made regardless of whether the biochar is buried or left above ground?

 

Thanks,

Kevin McLean

Sun24

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