permaculture

[mIEKAL aND <qazingulaza@gmail.com>]

"There's more to this than just a freaky looking plant dreadlock. That
root system represents something far bigger than itself: Soil health.
Perennial plants build soil and protect against erosion in ways annual
plants and their skimpy root structures simply cannot. It's why, since
large-scale corn farming replaced perennial prairie, Iowa has lost
some 8 vertical inches of precious topsoil. Glover's argument: To
protect our farming resources for future generations we need to pay
more attention to the potential benefits of perennial crops."

http://boingboing.net/2011/10/26/the-roots-of-perennial-wheat.html