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" />Farmers & Landowners
We supply and spread crushed silicate rock, such as basalt, on local agricultural land. Discover how we partner with farmers and landowners to enrich soil health and combat climate change.
The Benefits of Enhanced Rock Weathering
Crushed basalt is applied to farmland due to its benefits for soil fertility, soil biology, crop yield and health. This mineral-rich volcanic rock also removes carbon dioxide from the atmosphere through a process called enhanced rock weathering.
Meet the team and experience UNDO’s operations in this short video
Hear first-hand from organic farmers Murray Cooper and Hugh Grierson about the positive impact of crushed basalt on the soil health, crop yield and biodiversity of their farms. Plus, take a deeper dive into the agronomic benefits of enhanced rock weathering from UNDO’s field trials.
Certified By
Our basalt is suitable for all crops, including pasture, and has been approved for use in organic farming systems by respected certification bodies.
Basalt: A Nutrient-Rich Soil Enhancer
After basalt is spread on farmland, it breaks down to release essential nutrients, promoting healthy crop growth and stabilising soil pH. It’s a win-win for your land and the environment.
The Nutrient Composition of Basalt
Phosphorus
Important for protein synthesis, root and shoot development and energy transfer within the plant.
Potassium
Aids the process of photosynthesis and improves root growth to help crops become more drought-resistant.
Magnesium
A vital component of chlorophyll synthesis and central to the plant developing healthy, green leaves.
Calcium
Strengthens plant cell walls, making crops more resistant to mechanical damage, pest attacks and disease.
Sulphur
A key nutrient for crop growth affecting the formation of chlorophyll, protein production and synthesis of oils.
Copper
Essential for chlorophyll synthesis and a central component of enzymes responsible for the reduction of molecular oxygen.
Iron
Supports crop growth, enzyme function and the transport of oxygen throughout the roots and leaves.
Manganese
Vital to a wide range of enzyme processes including hormone synthesis, with a key role in photosynthesis.
Molybdenum
Helps nitrogen assimilation and is important for potassium absorption.
Zinc
Plays a vital role in many functions within the plant including protein synthesis and maintaining cell wall integrity.
The Alkalising Effect of Basalt Rock
As basalt weathers, it helps manage and maintain the target pH of the soil, reducing the need to lime as frequently. Unlike lime, which offers an immediate but temporary adjustment, basalt delivers a slow release of alkalinity to stabilise soil pH at optimum levels for longer. It also increases the availability of essential nutrients, enhancing soil health over time.
Boosting Local Economies
Our Green Jobs Pathway brings green jobs to rural communities increasingly feeling the negative impacts of climate change. We share free soil analysis before and after spreading. We’re not importing machines and talent. We’re importing the ability for local people to do carbon removal in their community.
Climate Action for Every Type of Farm
Our basalt is suitable for every kind of farm – arable, dairy, beef, sheep and mixed. The University of Sheffield claims that “adding rock dust to UK agricultural soils could absorb up to 45% of the atmospheric carbon dioxide needed to reach net-zero…[it] could remove between 6-30 million tonnes of CO2 from the atmosphere annually by 2050.”
Our Field Trials
From small plot field trials to expansive research at Newcastle University’s Nafferton Farm, we’re building a robust dataset to quantify the agronomic benefits of enhanced rock weathering.
We’re studying eight different crops, from cereals and oilseeds to potatoes and grassland, across hundreds of plots as we gather thousands of soil and tissue samples.
"For farmers, the benefits of UNDO’s work are clear: spreading crushed basalt on our fields is good for the soil quality and good for the livestock that grazes here, which is what every farmer wants. It also means that less costly products are needed to maintain the health and pH of our soil. It’s easy to do as UNDO organise the spreading for us, and we’re already reaping the rewards."
"I definitely recommend UNDO’s product. It’s doing something good for the environment. I’m benefiting from it long-term. I’m saving considerable money by not needing other inputs like lime. I'm getting a yield increase and reducing my use of artificial minerals as well to feed the livestock. The dust is organically approved, and the nutrient value the dust provides is considerable, especially for an organic situation."
"I've been looking at rock dust and hearing about its benefits for probably 20 years. At one time, I investigated spreading it myself, but I was put off by the cost, I must confess. I was walking around the Highland Show, and I saw a UNDO stand. I was reading about the effects it had on improving soils and how that then fed through to the yields, soil health and the nutritional benefits in the food. Margins are under pressure and getting something that improves our output is a huge bonus."
"I was pleased to offer UNDO the opportunity to demonstrate how 1,000t of crushed basalt rock would work on my farm. This was of interest to me because as well as the carbon capture it was adding minerals to the soil which was a welcome benefit. I now look forward to treating further areas and topping up fields already spread."
