Can AI help accelerate the scaling and uptake of the Vetiver System?
As we are all aware, communities across the Global South are experiencing the accelerating impacts of climate change — soil erosion, flooding, drought, and degraded farmland. For hundreds of millions of smallholder farmers, credible large-scale planned adaptation programs will arrive too late. What these communities urgently need are low-cost, community-led solutions that are:
- Proven: backed by decades of field evidence
- Scalable: adaptable to diverse climates and soils
- Accessible: simple enough for farmers to implement with minimal inputs
We also know that the Vetiver System (VS) meets these criteria and should be playing a much larger role than it currently is playing. While not to underestimate the impact that the global community of vetiver users has had in building awareness, disseminating the technology, and assisting in its adoption, there is still a very long way to go to achieve impact at scale. We need new and more effective pathways for promotion, dissemination, and support that match the urgency of the climate crisis. In this month’s newsletter, we want to explore the potential for AI in helping us to scale the Vetiver System.
In last month’s newsletter, Dick Grimshaw laid out a very thoughtful and informed critique of what it will take to promote VS and bring it to scale. If you are are an active promoter of VS and have not read it yet, please do take the time to do so. This is crucial discussion to be had and lies at the very heart of what TVNI and its members are seeking to achieve. With that in mind, the question was posed as to what tools AI currently could offer to scale awareness, accelerate adoption, and generate evidence of VS impact, and so extend TVNI’s reach beyond what our current methods can achieve….taking into account Dick’s clear-eyed views on the challenges and and approaches that will be needed to overcome the challenges. It is clear to me that we do need to learn how to use and deploy these tools as their potential, like that of VS, is to provide “low cost and practical” solutions.
The following is a draft strategy that came out of an iterative “discussion” with ChatGPT5, which in the near future we will consider developing into a medium-term fundraising strategy for accelerating the scaling and uptake of VS. If any of our readers are knowledgeable and experienced with developing AI tools and wish to get involved in trying to develop these ideas in the future, please do let us know.
AI Strategy Timeline for Scaling the Vetiver System (VS)
Phase 1: Quick Wins (0–12 Months)
Goal: Use AI to build visibility, credibility, and farmer support.
- AI-Driven Influencer Amplification: Auto-generate multilingual videos, infographics, and posts to extend reach of local Vetiver Champions.
- Vetiver Farmer Chatbot (Pilot): Multilingual, low-bandwidth (SMS/WhatsApp/IVR) chatbot giving practical advice on planting, maintenance, and uses; delivered through platforms like Digital Green.
- AI Knowledge Translator: Convert technical documents into farmer guides, policy briefs, and media-ready stories in multiple languages and literacy levels.
- AI Media & Policy Monitoring: Automated scanning of global climate policy, adaptation finance, and media to alert TVNI when/where to insert the Vetiver System into debates.
Phase 2: Medium-Term Scaling (1–3 Years)
Goal: Deploy AI tools to strengthen institutional legitimacy and community-level scaling capacity.
- Vetiver Knowledge Hub (“Vetiverpedia”): AI semantic search and adaptive learning to make TVNI’s knowledge base universally accessible.
- AI Adaptive Training Systems: Interactive AI-powered modules (including Augmented Reality) to train engineers, NGOs, and extension workers in VS design and application.
Phase 3: Slow-Burn Institutional Shifts (3–5+ Years)
Goal: Apply AI to embed the Vetiver System in policy, finance, and engineering standards.
- AI Impact Monitoring & Verification: Remote sensing + machine learning to quantify soil retention, slope stability, flood damages avoided, water quality gains, and carbon sequestration.
- AI-Driven Finance Integration: Models that calculate ROI, avoided disaster costs, and carbon credits, positioning VS for carbon markets, resilience bonds, and adaptation finance.
- Global Vetiver Dashboard (AI-enabled): A live, public-facing dashboard showing adoption hotspots, verified impacts, and cost-benefit data.
- AI Policy & Stakeholder Targeting: Continuous AI scanning of finance pipelines, engineering codes, and policy frameworks to pinpoint where and how VS should be pitched.
Passing the Torch: Dr. Paul Truong and TVNI Welcome Our Two New Co-Technical Directors
TVNI announces an important transition in its technical leadership. After decades of service, Dr. Paul Truong — who has served as TVNI’s Technical Director since its inception — is moving to emeritus status. To continue his legacy, TVNI is proud to appoint Feng Ziyuan of China and Robinson Vanoh of Papua New Guinea (PNG) as Co-Technical Directors. Our thanks to Feng Ziyuan and Robinson Vanoh for volunteering their time and expertise to assist TVNI and its members; and our deepest appreciation to Dr. Paul Troung whose global efforts have been invaluable to the development and impleentation of so many of VS’ eco-engineering applications
Dr. Truong has been the global standard bearer for vetiver research and applications. His pioneering studies demonstrated vetiver’s extraordinary environmental tolerances—its resilience under extremes of drought, flood, salinity, and toxic contamination. Through groundbreaking work in phytoremediation, he showed how vetiver could rehabilitate mine spoils, clean up wastewater, and capture pollutants from landfills and industrial sites. He started working with vetiver in Queensland, Australia in the early 1990s, and since then has been a leading promoter of VGT worldwide. He has been instrumental in most regional and international workshops and conferences.
His prolific output of numerous journal articles, publications, case studies, and presentations have provided the foundation for national vetiver programs worldwide, as have the many graduate students that he has mentored in their research on aspects of VGT. TVNI’s Document Center and Manuals & Guides hosts dozens of his publications, which continue to guide practitioners, researchers, and policy makers. His latest major publication on VGT “Vetiver Roots – The Vetiver System Technology Hidden Half”, is a first in-depth look on the form and function of vetiver roots. Paul lives in Brisbane, Australia and remains active as a TVNI Director.
Feng Ziyuan has been at the forefront of advancing Vetiver Grass Technology (VGT) in China and beyond since 1995. Over nearly three decades, he has led pioneering work in breeding and propagating vetiver, developing ecological slope stabilization, restoring vegetation in degraded sites, and designing wastewater and pollution treatment systems. His efforts have extended to large-scale applications across more than ten provinces in southern China, covering over four million square meters and generating significant environmental and economic benefits. Feng has published more than 40 research and application papers, widely cited in professional fields ranging from water conservancy to ecology. He founded and leads a multidisciplinary enterprise – Guangzhou Vetiver Ecological Scientific & Technology Co. – that established comprehensive technical standards for vetiver applications. Recognized internationally, he has provided technical guidance from the Democratic Republic of Congo to Southeast Asia. At ICV-7 in 2023, Feng was honored with the prestigious King of Thailand Award for Outstanding Dissemination and Application for his development and application of “Comprehensive Miniaturized Sewage Treatment Technology – Ecological Compound Micro Circulation”
Robinson Vanoh stands as a pioneering force for Vetiver Grass Technology across Papua New Guinea and the greater South Pacific. As Director of TVNI and the founder of Eagle Vetiver Systems Ltd — a biotechnology company with deep expertise in Vetiver grass technology – . he has delivered projects across PNG and the South Pacific Island nations, including Solomon Islands, Fiji and Tuvalu. His work in Fiji included the development of a well-received, and comprehensive training manual for VGT application in that country. He has spearheaded initiatives to stabilize palm oil plantations, mines, highways and riverbanks, and rehabilitate eroding landscapes. His leadership and community engagement were honored with the King of Thailand Vetiver Award – Certificate of Excellence for Peoples Participation in On-farm Applications and Socio-economic Impacts at ICV-7: “Promoting and Dissemination of Information about Vetiver System Technology Applications across the South Pacific Islands.”
Vetiver Advances in China: Tailings Pond Remediation and Training Initiatives
Feng Ziyuan has recently led an ambitious ecological remediation project in Qingyuan City, Guangdong Province, applying the Vetiver System to stabilize and restore a large, heavily polluted tailings pond. Covering more than 114 hectares and divided into 20 treatment zones, the project addressed severe soil and groundwater contamination left by illegal mining, including acidity and heavy metals such as arsenic, lead, and chromium. He personally guided field implementation, ensuring technical standards were upheld in key sections.
The results have been recognized by local government officials and major state-owned enterprises. Encouraged by this success, Feng has designed a second phase that will expand vetiver application to 12 hectares, representing 10% of the total investment. With Guangdong Province set to receive significant central government funding for tailings pond management in 2026, he sees this as a pivotal moment for scaling up vetiver use nationwide.
To build on this momentum, Feng is preparing a symposium and training course in Guangdong to showcase case studies, train practitioners, and engage policymakers, aiming to elevate vetiver’s role in China’s ecological restoration efforts.
Top left, construction phase. Top right and bottom center, 180 days after completion of the work. (Source: Feng Ziyuan)
Can AI provide useful insights to VS “intangibles” & help us make better use of existing information?
An estimate of VS global footprint
An estimate of VS global footprintWe have long known that TVNI knows only a small fraction of what is going on in the world with VS. For example, the question of “How many people around the world are directly using and/or benefiting from VGT?” is obviously of great interest. However, obtaining a defensible estimate using traditional research and survey methods would require a level of effort far beyond TVNI’s reach and capacity. To try and get an estimate, two different AIs (Chat GPT 5 and Gemini AI 2.5 Pro) were used in a multi-step, iterative process. At each step, the two AIs reviewed, critiqued, and and sought to validate the estimates made by the other. The exercise specifically excluded those in the essential oil value chain. After a half-dozen rounds, the estimates began to converge.
The estimate? We estimate ~0.7–1.4 million direct users worldwide; including households, ~3.5–7.0 million people benefit; and counting wider community/consumers yields ~10–21 million beneficiaries (reported as beneficiaries, not users, with explicit overlap adjustments). The caveat: These figures are indicative ranges derived from documented project anchors, region-level household multipliers, and conservative extrapolations; they are not a census. Tier-3 (wider community/consumers) reflects beneficiaries rather than active users and may overlap with Tiers 1–2 (direct users and their households), so totals should be read as order-of-magnitude estimates given sparse country-level counts and market data.
How good do you think this estimate is? Please share your thoughts down in the comment section.
Vetiver Grass, Soil Conservation, and Crop Yield Improvement.
A comprehensive literature review was conducted using the Consensus academic search engine, which aggregates from sources including Semantic Scholar and PubMed. The search strategy targeted studies on vetiver grass, soil conservation, and crop yield impacts. In total, 1,027 papers were identified, 468 were screened, 332 were deemed eligible, and the top 50 most relevant papers were included in this review.
The results showed that research papers reported that vetiver grass is one of the most effective biological tools for soil conservation and crop productivity:
- Erosion control: Vetiver hedgerows cut soil loss by 56–90% and reduce runoff by 60–72%, thanks to their deep roots and dense above-ground barriers that trap sediments.
- Soil fertility: Fields with vetiver show higher organic carbon, available phosphorus, and moisture retention—essential for sustaining long-term productivity.
- Yield impacts: Maize yields rose by 34–50%, cowpea by 11–21%, while cassava, yam, okra, and sweet potato also saw consistent gains.
- Best practices: Closer hedgerow spacing (5–10 m) produced stronger conservation and yield benefits, though at the cost of reduced planting area. Integrating vetiver with mulching or composting amplified soil and yield improvements.
- Adoption factors: Farmer training, awareness, and demonstration plots strongly influenced uptake. Yield gains may be modest in the first few years or under drought conditions, highlighting the need for supportive extension services.
Read the full AI-generated review here
Vetiver Passes the Cost–Benefit Test for Climate Adaptation
A comprehensive literature search was conducted using Consensus. The search strategy targeted cost-benefit analyses, economic evaluations, and comparative studies of vetiver grass technologies for climate change adaptation. In total, 991 papers were identified, 412 were screened, 348 were deemed eligible, and the top 50 most relevant papers were included in this review.
The AI-generated review of peer-reviewed studies confirmed that vetiver grass technologies consistently deliver high benefit–cost ratios for soil stabilization, erosion control, and slope protection.
- Soil erosion reduction: In Bangladesh, simulated rainfall trials found that vetiver hedgerows cut soil loss by 94–97% and reduced runoff by 21%, compared to untreated slopes.
- Slope stabilization: On highway slopes in India and Thailand, vetiver establishment costs were 40–60% lower than conventional retaining structures, with maintenance costs reduced by 70–80% over a 10-year horizon.
- Community projects: In Ethiopia, introducing vetiver for soil and water conservation increased crop yields by 15–25% while reducing gully erosion treatment costs by more than half.
- Climate resilience: Across case studies, vetiver systems increased infiltration rates by up to 35%, reduced shallow landslide risk by 30–50%, and improved slope shear strength by 20–35%.
- Co-benefits: Vetiver hedgerows sequester an estimated 1.2–1.5 tonnes of soil carbon per hectare per year and reduce nitrogen and phosphorus runoff by 25–40%, improving downstream water quality.
Comparative analyses showed that vetiver often matches or outperforms “grey” engineering approaches at a fraction of the cost, especially for shallow slope failures. However, the review notes limitations: vetiver is less effective for deep-seated landslides (>3–4 m depth) and large-scale adoption remains constrained by low policy support and farmer awareness.
The conclusion is clear: vetiver offers a robust, cost-effective, and climate-smart alternative to hard infrastructure. Where communities and governments have adopted it, savings are measurable, yields improve, and resilience to climate shocks grows.
🔗 Read the full AI-generated cost–benefit review here
Recent news and research articles of interest
Vetiver in the Pacific — From the Kokoda Trail to Global Networks
In Papua New Guinea, vetiver is gaining renewed visibility through community-driven projects highlighted in the Post Courier. One feature, “The Grass with Steel Roots,” profiles Robinson Vanoh’s decades of work with the Vetiver System and his role as a Director of TVNI (and now as TVNI’s Co-Technical Director). A companion article reports on the Kokoda Trail Motel’s land rehabilitation program, which also directs readers to TVNI a 2020 training manual that Robinson developed for Fiji. These stories underscore how local champions connect global knowledge with village-level needs, helping communities reduce erosion, restore degraded land, and build climate resilience.
Vetiver + LECA Removes Antibiotics from Wastewater
A study published in the ASCE Journal of Environmental Engineering evaluated the removal of the antibiotic erythromycin using lightweight expanded clay aggregate (LECA) in combination with vetiver plants. Results showed that vetiver’s phytoremediation capacity significantly boosted removal rates compared to physical adsorbents alone. With pharmaceutical residues emerging as a global water quality concern, this research points to the potential for integrated systems where engineered substrates and nature-based solutions complement each other.
Vetiver and Salinity Stress
A recent article in Plants examined how vetiver responds to increasing salinity levels, analyzing osmotic regulation and nutrient uptake. The study confirms vetiver’s strong tolerance to saline conditions, a trait that should be more widely exploited in coastal and estuarine environments where sea-level rise is driving saltwater intrusion. For practitioners working in delta regions, this research provides additional evidence supporting vetiver as a frontline option for protecting agricultural lands against salinity stress.
A Vetiver-Specific Terpene Contributes To The High Attractiveness Of Vetiver To Rice Stem Borer
A new study published in PNAS uncovers the molecular mechanism behind vetiver’s long-observed effectiveness as a trap plant for rice stem borer (RSB), a major pest in Asian rice systems. Researchers identified cedrol, a sesquiterpene volatile, as the key compound attracting female RSB moths. Genome sequencing of vetiver revealed a unique terpene synthase gene, VzTPS9, responsible for producing high levels of cedrol. Behavioral assays confirmed cedrol’s strong attractiveness, while transgenic rice engineered with VzTPS9 produced significantly more cedrol and exhibited enhanced RSB attraction compared to wild-type rice. Importantly, although RSB females lay more eggs on vetiver, the larvae typically fail to survive due to vetiver’s poor nutritional value and toxic compounds—making vetiver a highly effective biological “dead-end trap.” Field trials in Zhejiang, China, have shown vetiver borders can reduce rice damage by more than 50% and suppress RSB populations by over 70%. This discovery strengthens the case for vetiver’s strategic role in integrated pest management and highlights new opportunities for genome-guided identification of additional trap crops.
Excelente Jim. Me gustaría publicar la experiencia de finca dos aguas que está en mi Instagram @vetiverdrluque y en @fincadosaguas