permaculture

[sinergyinaction@netscape.net]

Hi,
I am trying to determine tree densities for planting pioneer legume trees in 
droughty country and clay soil.
I am not 100% sure about how close to each other can the trees be planted. 
I'd like to have 
as thick a canopy as possible, and start thinning the stand form the 2nd/3rd 
or fourth year.

The main constraint there is drought and summer very high temperatures (40ºC 
+). 
Although I am selecting drought-tolerant trees I am still
unsure how far can I push closeness without creating too much competition for 
water and nutrients.

The idea here is to increase biomass and shade etc. as much as possible in as 
a short time as possible.
We have some water sources available on site and we'll be able to store 
raiwater in the near future 
 
I understand that I will just have to improvise anyhow but if anyone has some 
clues from past experience that'd be great to hear.
 
Also, do you have any advise on publications or people that advice on what I 
want to do?
Thanks in advance
Antonio
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