Getting Started with Surge: Our Biological Seed Treatment
November 7th 2025Good seed treatment can make all the difference between a slow start and a strong, healthy crop. At Fielder, we know growers want to build soil health and strengthen plant resilience whilst cutting back on synthetic inputs, without compromising on yield. That’s exactly why we developed Surge: a new generation biological seed treatment designed to give your crop both a biological and nutritional head start.
Surge combines live beneficial microbes with a targeted micronutrient package, giving seeds everything they need to establish quickly and thrive. After five years of UK trials, the results speak for themselves. Stronger roots. Healthier plants. Sustainable yield gains.
What Makes Surge Different from Other Biological Seed Treatments
Most biological seed treatments focus only on beneficial microbes. Surge takes that a step further by combining them with essential micronutrients in a simple, easy-to-use liquid formula. This dual-action approach is what sets Surge apart.
The microbial side of Surge includes three elite strains of Bacillus, all grown and developed in the UK. These bacteria work in the rhizosphere (the area around the root) to fix nitrogen and solubilise phosphorus, making these nutrients more available to the plant. In doing so, Surge naturally reduces the need for synthetic inputs, supporting long-term soil health.
Alongside this biology, Surge contains a manganese-rich micronutrient mix. Manganese plays a vital role in root development and early plant growth, helping crops get out of the ground faster and more uniformly. Together, these elements form a truly synergistic solution and one that supports the seed from the moment it’s planted.
Designed for UK Conditions
Farming in the UK comes with its own unique challenges, from heavy soils to unpredictable weather. That’s why Surge has been trialled extensively under British conditions. We’ve tested it on cereals and horticultural crops, which guarantees compatibility and consistency across all seed types.
Our trials have shown as much as a 20% increase in yield, with an average uplift of around 5%. These results come from real British farms, managed by real growers who want dependable results.
The Science Behind Surge
Surge works at the root of the issue, quite literally. Once applied, the Bacillus strains colonise the root zone, creating a healthier rhizosphere. This improves water and nutrient uptake whilst strengthening the plant’s natural defences.
At the same time, the manganese component enhances enzyme activity within the seed, encouraging faster germination and stronger root expansion. The combination helps plants cope better with environmental stress, including drought and disease pressure.
Independent testing by the University of Nottingham found that Surge activated the plant’s defence signalling, helping to protect against issues such as Yellow Rust and Fusarium. This makes it a valuable addition to integrated pest and disease management programmes.
Sustainable by Design
At Fielder, we’re proud to support the shift towards more sustainable farming. Surge helps growers cut back on synthetic fertiliser use without sacrificing performance. By fixing atmospheric nitrogen and unlocking phosphorus in the soil, Surge helps reduce input costs and promotes a healthier growing environment.
Easy to Use & Proven to Work
Surge is simple to apply. It’s a true liquid solution, applied at 5L per tonne on cereals, with no premixing required. The formulation is stable, with a shelf life of at least 10 months, so you can use it flexibly across your programme.
It’s also fully compatible with other seed treatments, including plant protection products, meaning there’s no need to change your existing setup. Just treat, drill, and let Surge get to work.
Why Growers Trust Surge
We’ve spent years developing and refining Surge, and we’re confident in what it delivers. The proof lies in the results: stronger early establishment and noticeable gains in yield.
Growers using Surge consistently report quicker emergence and better resilience through dry or stressful periods. In many cases, these early gains carry through to harvest, delivering measurable returns on investment.
Get Started with Our Biological Seed Treatment
If you’re looking for a bio seed treatment that delivers real-world results, Surge is ready for your farm. It’s been designed to perform under British conditions and proven in independent trials, earning the trust of growers who value both performance and sustainability.
You can find detailed trial results and case studies here.
Or, if you’d like to speak directly with a specialist.