Nitrogen-fixing in Agroforestry

[A.Guevara at massey.ac.nz]

I got you an option, black locust, it is an N-fixing tree, you can take a 
pick at Animal Feed Science an Technology 57 (1996) 51-62.
But if what you are thinking about is a three strata agroforestry system, 
maybe the well known australian tested "Tagasaste", Chamaecytisus 
palmensis, is your choice, mate. sand and dry resistance, good for 
coastal land, but not frost.
if you want more info contact me!