This is too cool. To be able to re-green any desert is very hopeful. Almost sci-fi-ish.
Lawton and his group were given about 10 acres of extremely salty and flat soil 400 meters below sea level. They designed a system to collect as much of the rainwater as possible into swales (”water-harvesting ditches on contour”), bordered the swales with mulch and, on the uphill side, nitrogen-fixing trees that helped to shade the water and prevent evaporation. Underneath the mulch, they put mini-irrigation systems. On the downhill side, they planted fruit trees — date palms, fig trees, pomegranate trees, guava trees, mulberry trees, and some citrus — mixed in with non-fruit trees and more mulch (very non-traditional agriculture).

