From spring 2004 until autumn 2006, the value for cultivation and use of thirteen varieties of smooth-stalked meadow grass (Poa pratensis L.) was tested by the federal research stations Agroscope Reckenholz-Tänikon ART and Agroscope Changins-Wädenswil ACW at seven experimental sites. The traits yield, juvenile development, general impression, competitive ability, resistance against diseases, winter hardiness, digestible organic matter, persistence and adaptation to higher altitudes were systematically assessed. The results were summarised in an index value. This index allowed for a general evaluation of the varieties. Two new breeds attained the index required for recommendation. Because of legal constraints, of these two varieties only the variety Likollo will be added to the List of Recommended Varieties of Forage Plants at present. The already recommended variety Monopoly, which was also tested, did not attain the index required for recommendation. However, in order to allow for a sufficient supply of smooth-stalked meadow grass seed to the Swiss market, Monopoly will remain on the list for the time being.
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.