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Replenishing the soil microbiome.

Oath Soil Life is a fully characterized diverse microbial consortium backed by decades of research and demonstrated efficacy.

The Oath Microbial Discovery Engine

Soil microbes evolved 1 billion years ago. Without them, there would be no plants.

460 million years ago, plants developed roots in the soil and co-evolved functional relationships with the microbes surrounding their roots to enhance each other’s ability to survive storms, droughts, floods, fires, and freezes.

Oath Microbial Discovery Engine

Soil microbes evolved 1 billion years ago. Without them, there would be no plants.

Recently, advanced genomic technologies enable us to sequence the soil microbiome to uncover the specific roles these microbes play. Still, humans have characterized fewer than 1% of soil microbes.

460 million years ago, plants developed roots in the soil and co-evolved functional relationships with the microbes surrounding their roots to enhance each other’s ability to survive storms, droughts, floods, fires, and freezes.

Recently, advanced genomic technologies enable us to sequence the DNA of the soil microbiome to uncover the specific roles these microbes play. Still, humans have characterized fewer than 1% of soil microbes.

This is our science at Oath:

We isolate ideal probiotic candidates from nature.

We isolate ideal probiotic candidates from nature.

This is our science at Oath:

Our microbiologists and data scientists sequence the DNA of the soil microbiome, characterizing these microbes to uncover their specific soil functions, such as: 

Our microbiologists and data scientists sequence the DNA of the soil microbiome, characterizing these microbes to uncover their specific functions, such as: Carbon Cycling, Nitrogen Fixation, Water Holding Capacity, Soil Structure.

Carbon Cycling
Nitrogen Fixation
Water Holding Capacity
Soil Structure

This is our science at Oath:

We compose diverse, targeted microbial communities to replenish the soil microbiome for all applications, rigorously testing each consortium in vitro and in planta.

We compose diverse, targeted microbial communities to replenish the soil microbiome for all applications, rigorously testing each consortium in vitro and in planta.

This is our science at Oath:

Continuously training our Microbial Discovery Engine through an iterative feedback loop. No gene editing or modification ever.

Continuously training our Microbial Discovery Engine through an iterative feedback loop. No gene editing or modification ever.

Proven by performance

We have more than 20 years of data from over 220 pilot studies, demonstrating clear efficacy and replicable results.

Increased Yield by 160% & Provided an Additional Lift with Fertilizers
Increased Yield by 160% & Provided an Additional Lift with Fertilizers

Average of 2 potato trials – Locations: Nyamagabe and Muzanze; Rwanda, Season A 2024/2025

Organic Fertilizer = animal dung and plant residue compost, NPK (1-0.2-1) 10 t/ha = NPK 100-20-100

Inorganic Fertilizer = NPK (17/17/17) 300kg/ha = NPK 51-51-51

Fully Fertilized = organic and inorganic fertilizer

Rwanda Agriculture and Animal Resources Development Board

t/ha

0

5

10

15

20

25

30

35

7

Untreated

19

OSL 1kg/ha

27

Nitrogen 151kg/ha

32

OSL 1kg/ha + Nitrogen 151kg/ha

Increased Root Growth vs. Untreated Control
Increased Root Growth vs. Untreated Control

Greenhouse and nursery tests show significant increase in biomass of trees treated with Oath Soil Life vs. untreated controls in Pines, Red Cedar, and Cypress trees.

North Carolina State University

0%

20%

40%

60%

80%

100%

55%

Bald Cypress

64%

Longleaf Pine

43%

Eastern White Pine

34%

Eastern Red Cedar

37%

Shortleaf Pine

Increased Water Conservation vs. Untreated Control
Increased Water Conservation vs. Untreated Control

Water-deficit trials on turfgrass show two-fold increase in percent water content in treated soils vs. untreated controls.

City of Tucson, Arizona

Percent Water Content in Soil

0%

10%

20%

30%

40%

35%

Treated

17%

Untreated

Improved Grass Visual Quality vs. Untreated Control
Improved Grass Visual Quality vs. Untreated Control

Visual test of turfgrass quality by the National Turfgrass Evaluation Program. Quality ranges from 1 (poor or dead) to 9 (perfect).

Dr. Mohammad Pessarakli, University of Arizona

NTEP Scale 1 to 9

Treated

Untreated

4

5

6

Acceptable Quality

7

8

9

8
6

Test Turf 1

8
6

Test Turf 2

7
6

Test Turf 3

Reduced Soil Bulk Density vs. Untreated Control

Average of 3 Studies

-16%

Increased Soil Organic Carbon vs. Untreated Control

Average of 5 Studies

+51%

Subset of data gathered from university and field pilot trials from institutions such as:

Catalina Foothills School District

Central State University Ohio

City of Tucson, Arizona

Cornell University

Dole Asia

Dole Food Co

Illinois Sustainable Agriculture

Experimental Station

North Carolina State University

Oregon State University

Pennington Seed Co

Tucson Botanical Gardens

University of Arizona

University of Florida

University of Idaho

University of Rwanda

University of Wyoming

Washington State University

The experts at Oath

Oath works side by side with many of the world’s most accomplished microbiologists, data scientists, climate innovators, and field scientists.

Science Leadership
Anna Edlund, PhD

Chief Scientific Officer
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Kirsten Benjamin, PhD

EVP, Research & Development

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Professor Thomas Crowther

Principal Ecologist
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R&D and Production
Julia Baltezore

Director of Operations, Vacaville
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Shib Sankar Basu, PhD

Principal Scientist R&D Lead
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Serena Fraraccio

Scientist & Lab Manager
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Greg Holloway

Head of Production
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Alisha O’Neil

Microbiology Research Technician

Niklas Perslow

Microbiology Research Technician
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Catrina Sengsourinho

Microbiology Research Technician
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Data Science Bioinformatics
Abhinav Grama, PhD

VP of Data Science and Digital Innovation
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Jamison McCorrison, PhD

Sr. Bioinformatics Scientist
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Josh Espinoza, PhD

Computational Scientist

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Climate Innovation
Paul Hawken

Project Regeneration, Project Drawdown (advisor)
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Paul Stamets

Founder Fungi Perfecti, MycoMedica (advisor)
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Mark Stevenson

Founder CUR8 (advisor)
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Regenerative Agriculture
Robert Bonnie

Former US Under Secretary of Agriculture (advisor)
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Peter Byck

Arizona State University (advisor)
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Phil Hogan

Former EU Commissioner for Agriculture (advisor)

Peter Saavedra

Co-Founder & Head of Regeneration
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Field Science & Regulatory
Dr. Martin Voss

Chief Innovation Officer
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Dr. Virginie Boreux

VP, Business Development, Field Science, Regulatory EU
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Dr. Rodrigo Saraiva

VP, Business Development, Field Science, Regulatory LATAM
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Cosette Khawaja

Global Project Manager
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Scientific Advisory Board
Professor Janet Jansson

SAB Chair
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Michael Amaranthus, PhD

Oregon State University, Mycoanalytics
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Professor Thomas Crowther

ETH Zurich, Switzerland
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Professor John E. Fernández

MIT, USA
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Professor Jack Gilbert

UC San Diego, USA
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Professor Paul Jensen

UC San Diego, USA
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Professor Jennifer Martiny

UC Irvine, USA
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Professor Mette Haubjerg Nicolaisen

University of Copenhagen, Denmark
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Professor Joana Falcão Salles

Groningen Institute, Netherlands
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Professor Shibu Yooseph

Claremont McKenna College, USA
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