In the frame of several research projects in apple breeding and conservation technology at the research station Agroscope Changins-Wädenswil ACW, key factors determining apple quality and the effect of different storage conditions on produce characteristics have been investigated. It is known that, besides classical quality parameters, such as firmness, sugar content and acidity, aroma is one of the most important factors affecting consumer acceptance of apples. In this study, a rapid and extensive analytical method for aroma profiling in apples is presented and its implementation as key tool for research purposes as well as for quality assurance discussed. The aroma production and development of Golden Delicious apples during ripening and storage was followed up with the SMart Nose®, an electronic nose based on mass spectrometry. Measurements of ripening parameters, such as ethylene production, firmness, sugar content and acidity, were also carried out and the results compared with the aroma analyses. The fingerprint data produced by the SMart Nose® showed good correlations with both firmness degradation patterns as well as with the ethylene production rates of the investigated apples.
Tuta absoluta is one of the most destructive pests of solanaceous crops. Agroscope has developed a statistical model to study the population dynamics of the pest and its parasitoids and allows interventions to be optimally planned.
Swiss vineyards are often small and arranged in a mosaic of separate plots and management practices. Therefore, it can be assumed that spray drift from conventional to organic vineyards occurs regularly. Nevertheless, no pesticide residues are detected in most organic wines.
Nay M.M., Grieder C., Frey L.A., Amdahl H., Radovic J., Jaluvka L., Palmé A., Skøt L., Ruttink T., Kölliker R.
Red clover is one of the most important legumes in European forage production. In a multi-year field trial, researchers tested Europe’s largest collection of different red clover accessions at five European locations.