Reference values are required to analyse life cycle assessments of farms. For this purpose 27 model farms were defined for Swiss agriculture, each representing a group of farms, classified by the farm type according to the typology developed by Agroscope FAT Tänikon, by the production region (lowlands, hill, mountains) and by the farming system (integrated, organic). Farm accountancies, extension documents, recommendations and expert knowledge were used for the definition of the farm data. Per area unit the environmental impact was favourable for farms with extensive production such as farms in the mountains, with suckling cows or organic production, and for arable farms, while pig fattening farms had high environmental impacts. Referring to the produced nutritional energy, a high proportion of plant production was environmentally better, extensive production was unfavourable. The results referring to the raw performance showed little differences. Energy consumption for 1 kg milk differed little between farm types and farming systems, but increased with altitude.
A comparison of different methods of winter-wheat fertilisation with nitrogen showed that nitrogen surpluses can be significantly reduced by means of site-specific variable-rate nitrogen fertilisation.
Fabian Y., Roberti G., Jacot K., Gramlich A., Benz R., Szerencsits E., Churko G., Prasuhn V., Leifeld J., Zorn A., Walter T. (ꝉ), Herzog F.
Many tile drainage systems on arable land are in need of renewal. Cantons and stakeholders will now be given a decision-making tool enabling them to assess such areas in detail and to find sustainable solutions.
Ammonia emissions from the Swiss farming sector have scarcely declined over the past 20 years. This is because the factors leading to either an increase or decrease in emissions have for the most part cancelled each other out between 2000 and 2020.