Holding an information event on the impact of the 2026 summer on potato farming at Zurich's Wasserkirche in early September carries historical irony. Lack of water severely impacted potato crops during this hot summer, while over a century ago, during World War I, the church served as a temporary potato store.

Yield losses and imports: What are the consequences of the 2026 harvest?

The 2026 harvest figures present significant operational challenges. Farmers recorded yields per hectare approximately 20% below initial spring forecasts, reaching a low not seen since 1965. According to reports in the NZZ, total harvested volume fell to its lowest point since record-keeping began a century ago. Due to severe drought conditions, industry association Swisspatat reported that approximately 130,000 tons of potatoes will need to be imported. Consequently, Switzerland's self-sufficiency rate for potatoes dropped from its standard 85% to slightly above 70%. Christian Bucher, Managing Director of Swisspatat, stated to SRF that overall supply security remains established. The reduced harvest is primarily visible in crop sizing: due to smaller tuber dimensions, processed products like french fries and potato chips may be shorter this season. Overall crop quality remains high.

Crop resilience: Why is breeding drought-resistant potatoes becoming urgent?

Future agricultural production requires crop varieties adapted to changing environmental conditions. Data from summer 2026 indicates that irrigated potato fields yielded approximately double the output of non-irrigated fields. Access to water is increasingly critical, yet water availability is constrained.

Developing resilient potato varieties capable of enduring heat and drought is a priority for the sector. In 2024, the industry established a target agreement with the federal government to raise the share of resilient varieties in commercial cultivation from 20% to 80% by 2040.

Legislative timeline: Why has the Federal Council delayed new breeding methods?

Conventional breeding methods require up to 15 years to produce market-ready robust varieties. Consequently, Swisspatat advocates for authorizing crops developed via modern genomic techniques within Switzerland. In 2024, the Swiss Parliament instructed the Federal Council to prepare a legislative framework for new genomic techniques. However, the government postponed the publication of this bill to 2027 (Parliamentary Business 20263751). Meanwhile, the European Union is progressing with steps to legalize the cultivation and sale of gene-edited plants. Swisspatat Director Christian Bucher emphasized in the NZZ that alignment with EU regulatory frameworks is necessary to maintain long-term supply stability for Swiss potatoes.

New breeding technologies: What are the implications for Swiss imports?

Switzerland will import approximately a quarter of its potato requirement this year, primarily from EU member states. As neighboring countries begin harvesting gene-edited varieties that are visually and chemically indistinguishable from conventionally bred crops, restricting these imports will present technical challenges for importers, especially given the absence of mandatory labeling requirements in the EU.

Achieving higher self-sufficiency or maintaining import capability requires addressing the regulatory status of modern breeding technologies in Switzerland. Research institutes such as Agroscope continue trial evaluations under strict regulatory containment protocols pending legislative decisions.

Keywords: Potato harvest · Drought 2026 · Self-sufficiency rate · Swisspatat · Resilient varieties · New breeding technologies · Gene editing · Federal Council