Scott,
True, he uses swales and catches rainwater. He also does companion planting. However, none of this will grow date palms in the desert. Date palms need lots of water. That's why they're an oasis tree; in oasis you can have a one to three meter deep water table. As the Arabs say, they like their feet in the water and their head in the fire.
I keep thinking maybe I'm not perceptive
enough to catch the subtle genius of the Greening the Desert
project. It looks to me like he sets up a good biodynamic system on artificial irrigation.
I love his videos. That's how I first learned Permaculture, I just don't get the hype about Greening the Desert. It strikes me as another episode of "Westerner Pops in and Drops a Cool Project Over Night." I like what he's doing as far as it goes, but I certainly wouldn't pay thousands for the
PDC there.
I'm still thinking about using drip lines on my project. But two concerns have kept me from it so far:
1, It's a bunch of plastic that I will be importing from half way around the world and which will have to be burned up at some point;
2, If my system depends on drip lines, then what happens when my water pump goes down and it takes weeks to get the right part or expertise to fix it out here 250 kilometers from any paved road?
I'd rather heed Molleson's advice that
sustainable change is slow.