The effect of ecological measures in agriculture on the phosphorus contamination of waters caused in particular by surface runoff was investigated in the catchment area of the Lippenruti Brook in the canton of Lucerne. Within the scope of this investigation spanning 270 different fields, site, cultivation and dung spreading factors were examined and placed in a causal connection with the measurements made in the brook. In comparison to the phosphorus contamination of the brook at the beginning of the nineties, first results lead to assume a maximal reduction of 19 % of the contamination caused by agriculture.
Those wishing to promote biodiversity in agriculture by means of result-based schemes need meaningful indicators. An overview of proposed and used indicators highlights developments and challenges.
Foods of animal origin – friend or foe? It all depends on the needs of consumers and on local production conditions, as shown by a major review in which Agroscope took part.
In vegetable production it is usual to leave crop residues on the field. Measurements carried out by Agroscope researchers show that removing these residues significantly reduces nitrate leaching.