| Clay (4) |  |
to make clay soils drain faster and sandy soils drain slower. As more gardeners and farmers add ground charcoal
In the new study biogeochemists at Rice conducted side-by-side tests of the water-holding ability of three soil types#sand clay and topsoil#both with and without added biochar.
When biochar is added to clay it makes the soil less dense and it increases hydraulic conductivity
Prior to use the inhabitants filter the water again with the help of a clay pot that is provided with very small holes.
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