- Flint Hills Co-op
- OGALLALA GROWERS
- Nine Mile Ranch
- COTTONWOOD
- Saline Valley Farms
- prairie/ledger
Most carbon programmes sample the top 30 cm. Prairie roots put half their carbon below that line, and the payment stops where the sampling does.
A shallow core misses the slow, stable carbon: the kind that stays put for decades. Growers doing the hard work of deep-rooted rotations get credited for the easy part.
We built Rhizal to measure the whole column. Every core runs to a metre, is scanned at 2 cm resolution, and ties back to a certified lab.
Sixteen cores from one field. The green is what a 30 cm programme never sees.
A metre of soil, every time
A truck-mounted probe pulls intact cores to 100 cm on a grid stratified by slope, texture and past yield. No shovel pits, no guessing.
Hydraulic probe · 4.5 cm boreRead in the cab, not in six weeks
Each core slides past a spectrometer at 2 cm steps before it leaves the field. One in eight goes to a certified lab to keep the scanner honest.
VIS-NIR · 50 readings per coreA map buyers will sign
Cores become a field-wide stock map with an honest error bar on every acre, filed to the registry of your choice.
Verra VM0042 · CAR SEP 1.1One sheet per field. Every acre with its own error bar.
+4.8 t C/ha since the 2024 baseline, 71% of it below 30 cm
Three seasons, as they actually went.
- Nine Mile RanchCherry Co., NE · Grazing
A 30 cm programme had credited them almost nothing for adaptive grazing. The metre cores found the gain sitting between 40 and 70 cm.
158Acres+4.8t C / ha9Days to file - Flint Hills Co-opChase Co., KS · 14 farms
Fourteen members pooled their acres into one filing. Two farms showed no gain, and we said so on the sheet. The buyer paid a premium for that.
6,210Acres+2.1t C / ha31Days to file - Saline Valley FarmsSaline Co., KS · Perennial grain
Third season of Kernza under a wheat rotation. Roots at 90 cm by year two, and the carbon followed them down.
412Acres+6.3t C / ha12Days to file
Two ways in. Both paid per acre, never out of your credits.
One coring visit, one stock sheet, one filing. For a baseline, or to find out if a practice is working before you commit to it.
Minimum 80 acresRe-cores every two seasons on the same points, so change is measured, not modelled. Includes buyer introductions and the registry paperwork.
Five-year term · cancel at any re-corePull the first core this spring.
We visit fields from March to May and September to November. Book a slot and a crew calls within two days.