I am now back in my second home, which to my pleasant surprise is the home to pioneers of organic agriculture and managment of drylands.
The first was Percival Alfred Yeomans who developed keyline design.
https://en.wikipedia.org/wiki/Keyline_design
Second i would say is Bill Mollison the father of permaculture, although Masanobu Fukuoka can be considered too.
https://en.wikipedia.org/wiki/Bill_Mollison
another Aussie is Geoff Lawton of " Greening the Desert" fame, who is surprise a muslim revert and married to a palestinian.
His Zaytuna farm and institute is amazing.
Not an Aussie but Alan Savory is the next person relevant to somalia, because his holistic management is revolutionary and is the answer to many of our problems
https://www.ted.com/talks/allan_savory_ ... ate_change
there is another australian Colin seis has taken it to the next level,
with pasture cropping.
Imagine feeding your livestock from perennial grasses and then sowing with a seed drill into the pasture , crops like wheat, soughum etc
you get 2 for one, and the wastes from the crops feed the wild grasses, and the residue and the cut grasses provide shade, windcover, massive water retention on your lands, meaning you can survive droughts and continue to produce.
The animal litter is also fertilizer and the mob grazing encourages growth of the native wild grasses.
win win situation.
http://www.thesolutionsjournal.com/node/1261
all the above can be combined, along with agroforestry
they all compliment each other and work well together.
The only difficulty is getting the balance right, and adjusting to each different environment.
thats why modern trained agronomists have trouble with permaculture,
you need a fiddle and see what happens attitude, and letting nature take its course,
I think fresh minds could do better.