This work presents a method for assessing pesticides transfer risks to the surface water by erosion and runoff. It was developed in a part of the watershed of the Boiron de Morges (Vaud, Switzerland). This method combines observations in the field with the use of Geographic Information Systems (GIS). It considers timeless and timely factors. An evaluation grid permits to classify the different factors by the risk severity they generate. Their combination then allows to produce a synthetic map showing the transfer risks of pesticides in the whole zone examined. This method makes not only possible to identify the plots with an inherent risk of high transfer, but also the factors responsible for it. Once the plots have been identified, targeted measures can be envisaged to limit the soil loss and the pesticides transfer.
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.