Having read the book, I'm rather more skeptical.  Whilst it does give a nice exposition of how to properly apply mulched green twigs, I don't think you'll find the required materials anywhere near to the exploitively irrigated desert farms pictured in Jordan and Arabia.  It presents methods for wooded areas comparable to Quebec.  In the middle east, I fear that it is either desert or irrigate, and this book does not, in my opinion, present a viable alternative waterless farming method for use in waterless regions such as Palmira, Syria.  If it did, then I'd be advocating translation efforts and distribution in the Jordanian and Turkish border camps.  Instead, I call on any agricultural planning group in any university worldwide to propose desalination from the eastern Mediterranean and freshwater canals or pipelines into Syria to provide sufficient (not exuberant) freshwater to grow crops within Syria to feed all Syrians presently at border camps or in horrid queues which won't get them into Europe.  Lets get some feasible plans up, which are not limited by the availability of fresh green twigs near Palmira, and find out how many bitcoins it would cost to get that built.

F.F. do you disagree ?