Deep Root Irrigation Research

Deep Root Irrigation (DRI) began field testing its devices with grapevines in 2011 in Napa Valley, California. The following year, the company expanded testing to olive trees. Since that time, results consistently have demonstrated healthy grapevines and fruit and nut trees that thrive on dramatically less irrigation water.

The Sentek™ Test

Deep Root Irrigation can use 61.5% less water than does surface drip, according to an independent test. And DRI can achieve 50% soil saturation in half the time that surface drip requires (see video below).

Time-lapse video compares DRI and surface drip soil saturation levels and the time required to exceed 50%. The soil moisture data were collected by Sentek™ Drill and Drop soil moisture probes; images of the soil water content were captured by Sentek’s IrriMAX Live web-based software. For an excellent description of how to interpret the IrriMAX images, see Sentek’s YouTube video.

The 6-Hour Test

An independent study conducted November 5, 2014, by Coastal Viticultural Consultants found that—even after six hours—increases in soil saturation at levels of up to 48 inches below the surface were significantly greater with the DRI-12 than with a drip irrigation system.

12 inches:
2 times the drip system’s saturation increase

24 inches:
5.75 times the drip system’s saturation increase

36 inches:
20 times the drip system’s saturation increase

48 inches:
4.5 times the drip system’s saturation increase

The 30-Minute Test

Deep Root Irrigation’s inventor Jeff Ciudaj tested a DRI-12 and a drip irrigation unit installed near each other and simultaneously operated for 30 minutes, then photographed a cross-section of the soil where each was placed. The soil around the DRI-12 (see image below left) was significantly more saturated than was the soil around the drip device (see image below right).

Cross-section of soil after 30 minutes with a Deep Root Irrigation device.

Cross-section of soil after 30 minutes with a drip irrigation device.

DRI Products Manufactured in Angwin Ca.

U.S. Patent No. 8,381,437 and Other Patents Pending