The Agroinnovations Podcast
http://agroinnovations.com/index.php/en_us/multimedia/blogs/podcast/2010/12/episode-114-land-imprinting/

Episode #114: Land Imprinting
In this episode of the podcast we are joined by Dr. Robert Dixon of the Imprint Foundation http://katietown.com/aboutus.html. Dr. Dixon is the inventor of the land imprint machine, a roller with triangle impressions designed to improve the water infiltration capacity of the soil surface. Topics of discussion include the origins of the machine, costs of production and implementation, the results of imprinting, obstacles to technological transfer, land imprinting in the Middle East, and land imprinting as an economic development strategy.
hi everyone
Dr Robert Dixon appeared in the movie Bill Mollison's Global Gardener Part on Drylands, here is the You Tube 
http://www.youtube.com/watch?v=W15RRvKyJSk