[Homestead] Allan J. Yeomans' carbon sequestration theory
Gene GeRue
genegerue at ruralize.com
Thu Jan 31 09:39:04 EST 2008
I wrote:
If in fact this is what he is saying, then he needs to provide the
scientific research that supports his numbers. He postulates twenty
percent organic matter in soil. I have been an organic enthusiast for
decades and I have never seen anyone suggest such a number is feasible.
To check myself, I did a search and found this table of percentages of
organic matter in various soils:
Table 1. Organic matter in native and cultivated soils (per cent)
Soil zone
Virgin
Cultivated
Brown 3-4 2-3
Dark Brown 4-5 3-4
Black 6-10 4-6
Dark Gray 4-5 2-3
Gray 1-2 1-2
http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/agdex890?opendocument
More information about the Homestead
mailing list