From 2003 to 2005 Agroscope Reckenholz-Tänikon (ART) and Changins-Wädenswil (ACW) had been testing 61 varieties of perennial ryegrass at eight experimental sites. Data on yield, juvenile development, persistence, disease resistance, winter hardiness, competitive ability and adaptation to higher altitudes were obtained. With the data an index value was calculated, allowing for a general evaluation of the varieties. Corresponding to the results the variety LP 0097 of the early to mid-early flowering group will be added to the «List of Recommended Varieties of Forage Plants». With the mid-late to late group this is the case for the varieties Aber Dart, Barnauta and Pomposo. Several tested varieties attained an index value that would allow for recommendation, but, for the time being, they cannot be added to the list because they are not eligible for trade in Switzerland yet.
Herbicide-resistant weeds are a growing problem throughout the world. Monitoring herbicide resistance in Switzerland allows us to understand the mechanisms behind it and to better manage the use of herbicides.
Agroscope compared crop protection strategies in apple production. Reducing the use of plant-protection products lowered the local ecotoxological risks, but resulted in trade-offs between environmental and economic performance.
Bacillus thuringiensis (Bt) bacterium proteins protect Bt maize from being fed on by specific insects. A new, systematic analysis of international field data confirms that non-target organisms in Bt maize are largely spared.