Liberia Harnesses Nuclear Science to Fast-Track Climate-Resilient Rice

Rice is a staple food in Liberia and a cornerstone of rural livelihoods, yet domestic production meets only about one-third of national demand.

Liberia is turning to advanced nuclear-assisted breeding technologies to transform its rice sector, marking a significant leap toward food self-sufficiency in a country long dependent on imports. Backed by the International Atomic Energy Agency (IAEA), the initiative is enabling scientists to develop climate-resilient, high-yield rice varieties at unprecedented speed, with early results already showing promise.

At the heart of this transformation is a new generation of state-of-the-art breeding infrastructure, including a modern molecular laboratory and the country's first speed-breeding centre, allowing researchers to grow multiple rice generations each year and analyse plant traits at the DNA level.

Tackling a Deepening Food Security Challenge

Rice is a staple food in Liberia and a cornerstone of rural livelihoods, yet domestic production meets only about one-third of national demand. This shortfall has made the country heavily reliant on imports, exposing it to global price volatility and supply disruptions.

In 2024 alone, rice ranked among Liberia's top imports—alongside petroleum and vehicles—contributing to 41% of total import value, with over 1,000 shipments recorded in a single year.

Climate pressures are compounding the challenge. Flooding in 2025 caused significant crop losses, while previous lean seasons saw local rice stocks depleted in key regions, heightening food insecurity.

"Our biggest challenge was simple: Liberia could not produce enough rice and remained exposed to global price volatility," said Arthur Bob Karnuah, Director General of the Central Agricultural Research Institute (CARI).

A Technological Leap in Crop Development

To address these challenges, Liberia partnered with the IAEA and the Joint FAO/IAEA Centre to introduce nuclear-assisted plant breeding, a technique that accelerates genetic improvement by inducing beneficial mutations.

Using controlled irradiation, scientists generate new genetic variations in local rice varieties, selecting traits such as:

• Early maturity

• Stronger stems and improved standability

• Enhanced grain quality

• Greater tolerance to climate variability

Combined with advanced molecular tools—such as polymerase chain reaction (PCR) analysis—researchers can identify promising traits at the DNA level, significantly reducing the time required to develop new varieties.

Speed-Breeding: Accelerating Innovation

The newly established speed-breeding facility represents a major innovation. Equipped with programmable LED lighting and controlled temperature systems, it allows plants to grow under extended light cycles—dramatically shortening breeding timelines.

This means:

• Multiple crop generations can be produced annually

• Breeding cycles are reduced from years to months

• New varieties can reach farmers faster

Experts say this capability is critical in responding to rapidly changing climate conditions and rising food demand.

Building Local Expertise for Long-Term Impact

Beyond infrastructure, the initiative has focused heavily on capacity-building, equipping Liberian scientists with advanced skills in:

• Mutation breeding and irradiation techniques

• Molecular diagnostics and DNA screening

• Operation of high-tech breeding facilities

• Digital data systems for crop selection

This ensures that Liberia can sustain and scale its rice improvement programme independently over time.

"Introducing nuclear-assisted plant breeding has transformed what Liberia can achieve in rice research," said Pooja Bhatnagar-Mathur of the Joint FAO/IAEA Centre.

Early Results Show Strong Potential

Several mutant rice lines developed through the programme are already progressing through national trials. Early indicators show:

• Faster maturation rates

• Improved structural strength

• Better grain quality

• Increased resilience to environmental stress

"These new varieties will soon reach farmers' fields, and that is the ultimate goal," said plant breeder James Sulonkwiley Dolo.

Reducing Imports, Strengthening Resilience

Once deployed at scale, the new rice varieties are expected to:

• Increase domestic production and reduce import dependence

• Stabilise food supply and prices

• Improve farmer incomes through higher yields

• Strengthen resilience to climate shocks

The initiative also supports broader national goals of economic diversification and agricultural transformation, reducing vulnerability to external market fluctuations.

A Model for Innovation in Agriculture

The Liberia programme highlights the growing role of nuclear science in agriculture, offering a powerful tool for countries facing similar food security challenges.

By combining cutting-edge technology with local expertise and international collaboration, the approach demonstrates how science-driven solutions can deliver tangible benefits for farmers and consumers alike.

"These technologies are not only practical tools, but also catalysts for building long-term national self-reliance," said IAEA Programme Management Officer Chukwudi Anyanwu.

Looking Ahead

As global food systems face increasing pressure from climate change, population growth, and market volatility, Liberia's experience underscores the importance of investing in innovation, infrastructure, and human capital.

With a fully operational breeding pipeline now in place, the country is poised to shift from dependency toward greater food sovereignty—powered by science, speed, and sustainability.