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Indigo Ag selected 36 projects as semifinalists in its first Terraton Challenge, a 2019 competition seeking agricultural innovations that could store more carbon in soil, improve measurement, and reward farmers for climate-friendly practices. Nearly 300 applications arrived from 44 countries. The announcement described an opportunity—not proof that the projects had been validated, deployed, or delivered measurable carbon removal.
What the Terraton Challenge was
The challenge was part of Indigo’s broader Terraton Initiative, whose stated ambition was to draw down one trillion tons of atmospheric carbon dioxide into agricultural soils. “Terraton” was an aspirational climate-and-agriculture program, not a government scheme or a conventional farm product.
Indigo presented agriculture as a relatively scalable and affordable route to atmospheric carbon removal. That is Indigo’s framing, not an established outcome of the competition. Soil-carbon gains depend on local soils, climate, crops, management, measurement methods, and how long the carbon remains stored.
How the semifinalists were selected
A 25-member judging panel reduced nearly 300 applications from 44 countries to 36 semifinalist projects. The selection covered three tracks:
#1 Best Overall
| Track | Purpose |
|---|---|
| Soil-carbon sequestration | Approaches intended to speed or expand the biological, chemical, or operational storage of carbon in farm soils. |
| Soil-carbon quantification | Tools and methods for measuring, monitoring, and verifying changes in soil carbon. |
| Financial offerings | Payment, financing, insurance, or market mechanisms intended to reward growers for storing and maintaining soil carbon. |
Being named a semifinalist indicated that a project advanced in Indigo’s competition. It did not establish scientific validation, commercial readiness, carbon-credit eligibility, permanence, additionality, profitability, or field-scale performance.
What kinds of projects advanced
Coverage of the announcement described broad areas including food-waste reduction, robotics, drones, financial innovation, microbial science, soil-carbon measurement, and technologies intended to support regenerative agriculture. These are representative categories, not a complete verified roster of all 36 projects.
What semifinalists could receive
The announced program offered support and a possible route to testing:
- Virtual educational courses and mentorship.
- Evaluation of whether technologies could be tested on growers’ farms.
- Potential pilot testing, including a possible host site associated with Iowa farmer and judge Ben Riensche.
- One $20,000 grant for the winner of each track, or up to $60,000 across all three tracks.
- Potential contracts totaling up to $3 million for selected finalists with scalable solutions.
The $3 million figure was a possible contracting opportunity, not guaranteed prize money for the 36 semifinalists. Likewise, the announcement said semifinalists could compete for grants; it did not say that every project received funding.
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The announced schedule
| Stage | Announced timing | What it meant |
|---|---|---|
| Challenge launch | July 2019 | Indigo opened the competition for outside proposals. |
| Semifinalists announced | November 2019 | Thirty-six projects advanced after judging. |
| Planned demonstration | June 2020 | Qualified semifinalists were expected to demonstrate solutions at Beneficial Ag 2020 in Memphis, Tennessee. |
| Planned winners | October 2020 | Indigo expected to name winners from the three tracks. |
These were plans published with the 2019 announcement. The available announcement does not establish that the showcase occurred, that winners were named, that grants or contracts were executed, or that farm trials produced verified results.
Why measurement and farmer finance mattered
The quantification track addressed a central problem in agricultural carbon markets: payments depend on credible measurement, reporting, and verification. Soil-carbon estimates can vary with sampling depth, field-to-field variability, sampling frequency, models, management changes, and the baseline used for comparison. Carbon can also be lost through drought, erosion, tillage, or land-use change.
Financial products face their own practical questions. A grower evaluating one would need to examine contract length, required practice changes, payment timing, verification costs, data-sharing rules, reversal or underperformance provisions, limits on combining programs, and exposure to future carbon-credit prices. The Terraton announcement did not specify terms for the proposed financial models, so those details cannot be attributed to this competition.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the announcement does—and does not—show
Indigo’s selection demonstrated interest in building an innovation network around soil-carbon measurement, regenerative agriculture, farmer incentives, and carbon-market infrastructure. It did not by itself show that the Terraton Initiative achieved its one-trillion-ton ambition or that any semifinalist delivered durable, additional carbon removal.
A complete assessment would require later evidence identifying finalists and winners, confirming grants or contracts, documenting field pilots, and reporting independently credible climate and farm outcomes. The available 2019 coverage does not provide that follow-on record.
Publication and wording notes
Indigo’s archived announcement is dated November 8, 2019: Indigo Ag’s archive. Agriculture.com published its related report on November 6, 2019: Agriculture.com coverage. The Agriculture.com URL says “finalists,” but its headline and text refer to 36 semifinalists; “semifinalists” is the precise status supported by the announcement.
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