Climate change, extreme weather events, and industry commitments to deliver net zero are driving the potato supply chain to focus on reducing the carbon footprint of the crop. Branston, in collaboration with various partners and funded by Innovate UK, is conducting a Net Zero project over a span of three years, aimed at reducing carbon emissions in the potato supply chain. The project is exploring alternative fertilization methods to achieve the lowest possible greenhouse gas (GHG) emissions while maintaining a commercially viable crop.
A key focus of Branston’s Net Zero project is optimizing crop nutrition. Andrew Blair, Branston Field Technical Manager, explains that nitrogen fertilizers are essential for potato growth but contribute significantly to the crop’s carbon footprint. The project is researching novel sources of fertilizers and techniques that reduce reliance on synthetic fertilizers, including recycling nutrition in the field. Field trials have already shown differences in canopy color and vigor, and the project aims to measure variations in yield at harvest.
Additionally, the project is evaluating the effectiveness of R-leaf, a technology developed by Crop Intellect, that allows for nutrient absorption through the leaf as the crop grows. This technology has the potential to reduce fertilizer application at planting and provide precise nutrient timing throughout the growing season. Real-time nutrient analysis from Piketa Systems is also being employed to ensure crops receive the required nutrients in a timely manner, saving costs on lab analysis.
The project acknowledges the impact of fertilizer breakdown on greenhouse gas emissions, particularly nitrous oxide. The University of Lincoln is closely monitoring emissions throughout the growing season across the various fertilizer plots. Furthermore, the project is assessing the role of different potato varieties in reducing the carbon footprint by identifying those that perform well with low nitrogen levels, reduced irrigation, and lower quality land.
While the focus is on reducing inputs, the project recognizes the importance of maintaining yield and quality. The team emphasizes the need for a balanced approach to achieve sustainable potato production and meet ambitious net zero targets. A collective effort is required from the industry to find data-backed, sustainable solutions and steer the potato industry towards a greener future.
The potato supply chain is actively addressing the challenge of reducing carbon emissions. Through innovation and collaboration, Branston’s Net Zero project is exploring alternative fertilization methods and optimizing crop nutrition to achieve sustainable potato production. By adopting environmentally friendly practices and technologies, the industry can contribute to a greener food and beverage sector.