Between 2003 and 2005 Agroscope Reckenholz-Tänikon (ART) and Changins-Wädenswil (ACW) had been conducting trials with 25 varieties of white clover and four varieties of bent grasses at five and eight experimental sites, respectively. For comparison of the varieties, data on yield, juvenile development, persistence, disease resistance, winter hardiness, competitive ability and adaptation to higher altitudes were obtained. With the data of the observed traits an index value was calculated, allowing for a general evaluation of the varieties. Corresponding to the results of the trials, the white clover variety Tasman will be added to the «List of Recommended Varieties of Forage Plants». With bentgrasses this is the case for the varieties Gudrun and Janek. Several varieties which were tested attained an index value that would allow for recommendation but cannot be added to the list because they are not eligible for trade in Switzerland yet.
Stucky T., Hochstrasser M., Meyer S., Segessemann T., Ruthes A. C., Ahrens C. H., Dahlin P., Pelludat C.
The root knot nematode (RKN) Meloidogyne incognita causes damage in field and greenhouse crops. Agroscope researchers have developed a new screening test to identify bacteria that antagonise this agricultural pest.
With CULTAN fertilisation, nitrogen is injected into the soil as an ammonium solution. Multi-year trials conducted by Agroscope show that this method reduces nitrogen leaching by an average 38% without negatively affecting yields.
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.