more from written info, fa from conclusive, but...
Super-oxygenated water was created using an Oxygen Research Group LLC, Minneapolis, Minnesota, "Water Dog" machine. This machine uses an electrolysis procedure to separate water into hydrogen and oxygen. The hydrogen is released, thereby increasing the percentage of oxygen in the water. (2.5 ppm oxygen in untreated water vs. 12 ppm in treated water) A weak 20-10-20 fertilizer solution was incorporated into the drip irrigation water. Tensiometers were used to monitor the soil moisture. When soil conditions indicated, tunnels were supplied with approximately 50 gallons of water in a one hour period. Plants were watered daily in hot weather, decreasing to several times per week in September as temperatures cooled, and then further decreasing to weekly watering in late September and October, based on tensiometer readings.
Summary & Conclusions
Tomato crops showed an increase in yield when plants were treated with super-oxygenated water, while fruit size was unaffected. Cumulative yields were positive for super-oxygenated treated plants throughout the growing season, although individual harvests varied. The difference in total yields was most positive for treated plots thru mid-September, reaching nearly 16%. Since day-length and heat were decreasing after mid-September, plant growth and yield declined as did the differences between the treated and untreated plots. The difference between treated and untreated plots narrowed as growth slowed as expected since less water was being applied to the plants. Irrigation amounts dropped from nearly 50 gallons per day several times per week to less than 25 gallons one time per week as temperatures cooled. Total yield through mid-October, including all good, imperfect, and green fruit, showed a significant advantage for treated plots (8.2% with 84% confidence level). This yield advantage was maintained even though differences were narrowing between treated and untreated plots as growth slowed and much less water was supplied to the plants in the later part of September and in October.
One caveat for this study is that the plants were installed in the high tunnels somewhat late in the season, due to the cold spring growing conditions in zone 3b