Archive

The hot, dry years between 2021 and 2025 substantially reduced the yeast-assimilable nitrogen in the musts of Vaud wines – particularly in Chasselas – with direct impacts on fermentation and wine quality.

Mixtures of several forage-plant species systematically increase yields with lower fertiliser input. Higher temperatures enhance the benefits of these mixtures, making them a key component of climate-change adaptation.

A recently published paper by Agroscope gives an overview of preventive measures and non-chemical methods of controlling weeds, diseases and pests in arable farming and field vegetable cultivation.

Thanks to the selection of new clones, the ‘Räuschling’ grape variety has become more consistent in terms of cultivation and wine quality. Multi-year trials have shown that four new clones stabilise yield and quality and reduce the risk of both berry splitting and Botrytis (grey mould) infestation.

Plant-plant interactions can contribute to yield security and resilience. The significance of these interactions in agriculture is contentious, not least of all because the mechanisms are largely unclear. This study summarises the current state of knowledge.

Incorporating the SOM:clay ratio in the Principles of Agricultural Crop Fertilisation in Switzerland (PRIF) allows us to give more specific agronomic advice at each site based on a broader considera-tion of soil quality.

Wines produced from resistant grape varieties are in the ascendant in Swizerland. Consumers are showing that they are open to them. The market penetration of these wines, especially in the catering sector, could be improved through better communication.

The biodiversity of grassland areas is a precious resource that must be preserved. The evaluation of the in situ conservation programme by farmers and experts has led to recommendations for its improvement.

Interest in drought-adapted alternative forage plants is growing. What is their potential as catch crops? A study by Agroscope highlights the advantages and limitations of a selection of these crops.

A recent study shows that the risk of exposure during activities involving seeds treated with plant protection products is not always properly understood. Information provided to agricultural professionals should be improved.

An Agroscope study shows that breeding cultivar mixtures is an effective strategy for mitigating the effects of changing abiotic conditions and maintaining stable wheat quality.

White clover and smooth-stalked meadow grass make a significant contribution to persistence and grazeability in high-yielding fodder-production mixtures. Based on the 2022 to 2024 variety trials, Agroscope can now recommend two new varieties for each of these species.

The use of vegetable fibre can reduce plant-protection product residues by up to 80% in white musts, with a more limited effect in red musts.. The method can be applied in cellar, as a complement to the responsible use of products in the vineyard.

The 451 wines analysed on the VITISWISS national platform for monitoring plant-protection product residues show that Swiss wines possess a high level of quality, with only two cases of non-compliance.

A survey conducted in the Canton of Vaud on Chasselas reveals frequent nitrogen deficiencies in the vineyard for the 2022-2023 vintage, despite the application of soil supplements. Only a third of those surveyed measure yeast-assimilable nitrogen (YAN) in the must.

Autumn-sown annual or perennial flower strips support antagonists of aphids, which are vectors of virus yellows, a severe disease in sugar beet. The effectiveness of these strips is influenced by floral composition, sowing time point and surrounding landscape elements.

Faced with climate change that undermines the stability of forage production, the introduction of more-drought-tolerant catch crops represents an adaptive strategy with a high likelihood of success in safeguarding livestock feed supplies.

Cocksfoot is a productive, robust and drought-tolerant forage grass often used in Swiss grass leys. The most recent variety testing by Agroscope has led to the recommendation of several new top-performing cultivars.

A trial conducted at Changins compared the impact of different tillage practices on wheat yields and soil fertility. It showed that minimum tillage provides agronomic and environmental advantages.

Agroscope researchers have assessed the potential impact of the Japanese beetle for Swiss agriculture and outlined integrated, multi-crop control measures for different sectors of production.

Oilseed rape (OSR) requires multiple plant-protection treatments. Growing this crop with companion plants is a promising approach for sustainable pest control.

With its positive contribution to aroma, Metschnikowia pulcherrima is emerging as a valuable yeast in winemaking. The trial conducted suggests that bioprospection is an effective strategy for leveraging local microbial biodiversity.

Many fruit and vegetable crops are dependent on managed pollinators such as honeybees or bumblebees for pollination. Diversification of these pollinators is essential, since they are not always the best choice for specific crop plants, especially during cold, wet weather.

Although there is enormous microbial diversity in blueberry substrate, there is no strong correlation between diversity and yield, according to a new Agroscope study examining the interaction of soil biology and cropping system.

Agroscope researchers tested three natural antagonists of the tomato leafminer on six tomato genotypes. Of the three genotypes displaying a degree of resistance, two were found to be compatible with the natural enemies of the pest.

A study led by Agroscope has deepened our understanding of the genetic mechanisms responsible for grape skin colour. New findings have led to a revision of the genealogy of the Rouge du Pays cultivar (Cornalin du Valais) and contributed to a better understanding of the genetic diversity of the grapevine.