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Case study · Turf & golf

Turf pilot at Yorba Linda Country Club: one treated green, two controls

Over three months at Yorba Linda Country Club, the treated green showed +24.7% water penetration against two control greens (KST field data, one site). Dissolved oxygen in its irrigation water was up 300%, which is the input.

+24.7%
Water penetration
KST field data · Green #9 vs Greens #7 and #8
+300%
Dissolved oxygen in the irrigation water
KST field data · the input, not an outcome
3 months
Pilot length
One treated green, two controls · oxygen and ozone injected together
On this page
  1. Results
  2. How it was set up
  3. What this does not show
  4. Glossary

Yorba Linda Country Club, California · putting greens · Green #9 treated, Greens #7 and #8 as controls · dated March 2023, run over three months · published August 15, 2024

Results

  • +24.7% water penetration · KST field data
    Same green, same controls, same period. Less water pooled on the treated surface, and the paired cores show deeper rooting on the treated plot, a visual observation, not a measured figure.
  • +300% dissolved oxygen · KST field data
    In the treated irrigation water against the untreated supply. This is the input, not an outcome: it is what the system changed, and the penetration figure is what was observed on the treated green.
  • Fewer aeration cycles and chemical treatments · KST field data
    Recorded on the treated green, with a visible reduction in algae growth. No count was kept for either, so there is no number to quote. A pilot on your course should log both from day one, because they are budget lines.
  • −35.4% compacted salts · Figure reported in the pilot summary
    Green #9 against Greens #7 and #8, same source water, over three months. The measurement method behind this figure is being confirmed, so we do not use it as headline proof.

The economics are a projection

The pilot did not track spend on water or labor, so no dollar saving was measured. The club’s own read was that better penetration and healthier turf would move both budgets, and it evaluated the system on that basis. Projection, not measured

How it was set up

The club’s irrigation water carried a high load of minerals and salts and little dissolved oxygen (DO). On the greens that showed up as salts building in the profile, poor water penetration, and a maintenance load of frequent aeration and chemical treatment. The pilot asked one question: what changes on a green irrigated with oxygenated water, against greens that are not?

  • Setting. The KST Skid installed in the irrigation pump house, injecting oxygen and ozone as ultrafine bubbles into the water that irrigates Green #9.
  • Comparison. Green #9 treated; Greens #7 and #8, on the untreated supply, as controls.
  • Instruments and protocol. Soil electrical conductivity (EC), volumetric water content (VWC) and dissolved oxygen logged through the pilot; soil samples taken at intervals to assess root development, compaction and turf condition. The paired photos below include the FieldScout TDR 350 probe readings for VWC and EC.
  • Duration. Three months.
Paired comparison photos from the pilot: soil cores, FieldScout TDR 350 moisture and conductivity readings, and soil profile samples, with the treated Green #9 test plot in the left column and the untreated Green #8 control plot in the right column
Left: Green #9 test plot, treated. Right: Green #8 control plot, untreated. Photographs from the pilot, not the full measurement series.
The KST Skid installed and plumbed into the irrigation pump house at Yorba Linda Country Club
The KST Skid in the irrigation pump house.
The KST Skid unit on its wheeled frame, used in the pilot
The skid unit used in the pilot.
Handheld Thermo Scientific Orion meter displaying a dissolved-oxygen reading in mg/L during the pilot
A dissolved-oxygen spot reading taken during the pilot.

What this does not show

  • One site, one treated green. It is a result at Yorba Linda Country Club under that club’s water and soil over three months: an observed difference, not proof of cause, and not an expected value for another course.
  • Turf, not a food crop. It says nothing about yield in any crop.
  • The +300% describes the water, not the turf. Quoted alone it states an input as if it were an outcome.
  • Oxygen and ozone were injected together, so any difference belongs to the combined treatment, not to oxygen alone.

Glossary

Soil conductivity (EC)

The electrical conductivity of the soil, read with a probe. It tracks salinity, nutrient content and moisture together, so a map of EC across a green shows where salts are building and where irrigation or fertilizer can be adjusted.

Volumetric water content (VWC)

The share of the soil’s volume that is water, read with a probe as %VWC. It tells a turf manager whether a green is getting enough water without over-watering, and where to target irrigation or amendments.

Dissolved oxygen

The oxygen dissolved in irrigation water, in mg/L. Roots respire, and water carrying more oxygen supports root respiration and the aerobic soil microbiology around the roots. It is not a sanitizer and runs alongside a turf-health program, not in place of one.

Next step

Measure it on your own greens

One site is a result, not a forecast. A pilot puts a treated zone beside control zones on your own water and reports the difference against your baseline. Pilot fees can credit toward the full system. For how Kairospace works on greens and fairways, see the Turf & golf page.

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