In a 2-year study effects of a special soil tillage on earthworms were investigated in potatoes. Soil separation is a tillage method mainly in potatoe production seperating stones and large soil particles from fine earth. The earthworms were sampled before and twice after soil tillage with the combined method of extraction and hand sorting. The initial status of earthworm populations was evenly distributed on a high level (167 g *m-2, 243 individuals m-2).<br>The abundance and biomass of earthworms were more reduced in the separated than in the traditional soil treatment (rotary harrow). One year after the tillage treatment the abundance was 20 % and the biomass 45 % less than in the traditional treatment. Nicodrilus longus, N. caliginosus, Allobophora rosea were most affected by soil treatments, no negative effects on Lumbricus terrestris and A. chlorotica were observed.
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.