Soil Breakthrough Could Slash Costs For Potato Growers
- 2 hours ago
- 1 min read
A new breakthrough in soil science could significantly cut fertiliser costs for UK potato growers by unlocking previously inaccessible phosphorus already present in the soil.
Researchers and agronomy specialists have identified that large reserves of phosphorus—often referred to as “locked-in” or “legacy” phosphorus—can be made available to crops, reducing the need for additional fertiliser applications. Phosphorus is a vital nutrient for crop growth, but much of it becomes chemically bound in the soil and unavailable to plants, despite being present in significant quantities.
The discovery centres on the use of soil treatments that release this bound phosphorus, enabling crops to access nutrients that would otherwise remain unused. Trials have shown that potato growers could cut phosphate applications by up to 30–40kg per hectare without compromising yields, delivering substantial cost savings.
Beyond the financial benefits, the approach also offers environmental advantages. Reducing reliance on manufactured fertilisers could help limit nutrient runoff into waterways—a long-standing issue linked to water quality and ecosystem damage—while improving overall nutrient efficiency on farm.
Importantly, field trials have demonstrated that unlocking soil phosphorus can not only maintain yields but in some cases improve crop performance, with increases reported in both total yield and marketable produce.
The findings come at a critical time for the potato sector, as growers continue to face rising input costs and pressure to improve sustainability. By making better use of existing soil nutrients, this innovation could offer a practical route to both improved margins and more resilient production systems.
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