Soil compaction has become one of the most significant hidden challenges in modern agriculture. As machinery continues to increase in size and weight, the pressure placed on soils has risen accordingly, often at the expense of long-term soil structure and crop performance. While larger equipment brings clear advantages in efficiency and work rates, it can also lead to widespread compaction across the field. Controlled Traffic Farming (CTF) is gaining increasing attention across the UK as a practical way to address the issue by confining machinery movements to permanent traffic lanes, leaving the majority of the soil undisturbed for crop growth. In conventional systems, it is not uncommon for over 60% of a field to be trafficked during a season, whereas a well-designed CTF system can reduce this to as little as 10-20%, significantly improving the conditions in which crops establish and develop.
The impact of soil compaction on crop performance is often underestimated. When soil becomes compacted, root growth is restricted, water infiltration is reduced, and nutrient uptake becomes less efficient, all of which can lead to slower establishment and reduced yield potential. By keeping machinery on the same tramlines year after year, controlled traffic farming protects the crop-growing zones from repeated pressure, allowing soil structure to recover and function more effectively. One key consideration often overlooked is that the first pass of machinery is where the majority of soil damage occurs. For this reason, ensuring that wheels are set as wide as practically possible, without causing crop damage, can help reduce ground pressure and limit the depth of rutting from outset. This simple adjustment can play an important role in protecting soil structure, particularly in heavier or more vulnerable ground conditions, and is often one of the easiest ways to make an immediate difference in the field. From experience at Brocks Wheel & Tyre, these early decisions around wheel and tyre setup are often where the greatest gains can be achieved. Over time, these improvements can result in measurable benefits, with many systems reporting yield increases of 10-15% alongside operational benefits such as reduced fuel consumption due to lower draft requirements, less wear on machinery, and improved water management through better infiltration and reduced runoff.
This is where machinery setup becomes critical. Controlled traffic systems rely not only on precision guidance technology such as RTK GPS, but also on ensuring that all equipment operates within a consistent track and width system. Matching axle track widths, aligning implement working widths into multiples, and maintaining consistent wheel spacing across tractors, sprayers and drills are all essential for keeping traffic confined to permanent lanes. Without this level of alignment, the benefits of CTF are quickly reduced. Adjusting wheel and tyre configurations is therefore a key part of enabling farms to adopt or move towards controlled traffic systems, helping to improve machine stability, manage weight distribution and reduce unnecessary soil disturbance while maintaining efficiency in the field.
A strong example of this in practice is PX Farms Ltd in Cambridgeshire, one of the few large-scale farming operations in the UK to fully implement a controlled traffic system. By aligning machinery widths, investing in precision guidance and carefully managing field traffic, the business has successfully confined compaction to permanent tramlines across its operation. At BWT, we have worked with PX Farms to support their machinery setup, ensuring wheel and tyre configurations are optimised to match their system. Their approach demonstrates that, with the right planning and attention to detail, controlled traffic farming can be successfully implemented under UK conditions, delivering improvements in soil structure, operational efficiency and long-term crop performance.
Examples such as PX Farms highlight that controlled traffic farming is not simply a concept, but a practical and achievable system when supported by the right equipment and setup. However, it is also important to recognise that CTF is not without challenges. The system is primarily designed to manage the impact of heavy machinery and prevent severe, often irreversible subsoil compaction, but the creation of permanent tramlines can introduce new considerations. For example, these trafficked areas can sometimes act as channels for weed seeds to establish and spread across the field. In crops where grass weeds such as blackgrass are already a concern, this can present an additional management challenge that needs to be carefully considered as part of the overall system.
As more UK farms look to improve soil health while maintaining productivity, the importance of correct machinery configuration continues to grow. At BWT, we work with farmers and contractors to support these changes in a practical and cost-effective way, whether that involves adjusting track widths, supplying specialist wheel equipment or improving load capacity. Ultimately, protecting soil structure while maintaining efficient field operations comes down to getting the fundamentals right, and as farming systems continue to evolve, machinery setup will remain a key factor in building a more sustainable and productive future.
If you’d like to learn more, feel free to get in touch.
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info@bwt.uk.com
Fonts:
Misiewicz, P.A., Galambošová, J. (2023). Controlled Traffic Farming. In: Zhang, Q. (eds) Encyclopedia of Smart Agriculture Technologies. Springer, Cham. https://doi.org/10.1007/978-3-030-89123-7_105-1
