date:Jun 13, 2012
dramatic shift from the prevailing method of irrigation. Previously, in the first half of the 20th century, farmers typically applied large amounts of water in brief periodic episodes of flooding to saturate their fields, followed by longer periods of manufactured drought to dry out the soil. The new methods conceived and developed by Dr. Hillel applied water in small but continuous amounts directly to plant roots, dramatically cutting the amount of water needed to nourish crops, maintaining th