Field evidence
What has been observed. What still needs proving.
A course ran an initial treatment on all eighteen greens, then requested a second application roughly thirty days later, ahead of winter.
Independent field trial
Third-party data, in a different crop.
Before Rhizera was applied to turf, the formulation was put through an independent field trial in agriculture. It was conducted in Oxnard, California over the 2019–20 season by Holden Research and Consulting, an independent contract research organization, as a randomized complete block design with six replications. It was a strawberry trial, not a turf trial, and that distinction matters — the results below say something about how the product behaves in a soil profile, not about what it will do on your greens.
- flats per acre, treated
- 5,813
- flats per acre, grower standard
- 4,834
- flats per acre difference
- +979
- marketable fruit
- 85% vs 80%
- Achieved under a reduced nitrogen, phosphorus and potassium program.PLACEHOLDER — exact reduction percentage to be confirmed against the final report
- Higher early-season vigor ratings
- Higher SPAD chlorophyll readings
- Larger root and shoot biomass at nursery stage
- No adverse effects observed from any treatment
- Statistical significance assessed by Duncan's Multiple Range Test at 90% confidence
The full report is available on request.
One trial in one crop in one season is a starting point, not a body of evidence. It is offered here because it is independent, it is documented, and it is more than most products in this category can show. Golf course validation is underway and will be published on this page as it accumulates.
Initial treatment
Case study details
PLACEHOLDER — testimonial pending permission to use name
Application record
Photographs pending
A note on evidence
A comparison should be visible, not taken on trust.
The first course treated every green, including the practice and nursery greens, which means there was no untreated comparison. We are asking cooperating courses to hold one area back on future applications so the difference can be seen side by side rather than taken on trust.