Potato tuber analysis is an important tool for optimising fertilisation, ensuring balanced nutrient supply, and improving yield quality. By assessing nutrient concentrations in tubers, farmers can adjust fertilisation strategies to correct deficiencies and avoid excesses, enhancing nutrient use efficiency and sustainability. However, tuber analysis should be combined with soil and leaf analysis for a complete understanding of nutrient dynamics. While soil analysis determines nutrient availability and leaf analysis reflects real-time plant uptake, tuber analysis evaluates the final nutrient accumulation in the harvested crop. Differences between soil, leaf, and tuber nutrient levels can indicate uptake inefficiencies or nutrient translocation issues. This integrated approach supports site-specific fertilisation, improving crop health, reducing environmental impact, and lowering production costs.