Re: water retaining rocks
- To: s*@yahoogroups.com
- Subject: [sibrob] Re: water retaining rocks
- From: J* C*
- Date: Sun, 25 Feb 2001 20:53:25
>How the devil could rocks retain water? My guess is that rocks have
> >improved drainage or aeration rather than water retention.
How the devil indeed! I don't often post here, but thought that you would be
interested. This is similar to a method used in greening almost
uninhabitable areas of Australia. Where the soil is hard as rock, and just
as dry. (Hard pan clay)
A hole is dug, if possible, and compost and worms are added, with the new
tree. Rocks are used as a surface mulch, and these retain water in the soil.
They act as a physical barrier to evaporation of moisture from the soil.
They also provide a cooler microclimate for the worms, which do the hard
work of aerating and improving the soil, all for under award wages :-)
As the trees grow, they provide shade, and an understory can be planted in
this newly created environment. Very little water needs to be added.
Cheers, Jan Clark
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