The article highlights the increased costs and reduced yields faced by potato growers due to climate change. The WCA is adjusting its calculation methods to account for lower yields, leading to higher cost prices for potatoes. These costs are expected to rise further due to increased expenses in seed potatoes, crop protection, labour, land, and energy for storage. The proposed margin of 15% on bare cost price is necessary for arable farmers to continue potato cultivation. However, contract prices proposed by the French fries industry are insufficient to cover these costs, and the impending nitrogen discount for farmers in nutrient-polluted areas is expected to further reduce yields.