In field trials with artificial infections, the susceptibility of 15 Swiss and 3 foreign wheat varieties to Fusarium culmorum and F. graminearum was examined. The resistance pattern for the two fusaria was equal and no species specific reactions were registered. The cultivars showed big differences in disease severity, yield losses and contamination with the mycotoxin deoxynivalenol (DON). Together with the crop rotation and the soil tillage management the choice of the cultivar is an important mean to prevent problems with fusaria. With low susceptible cultivars the risk of high yield losses and unacceptable high contamination with mycotoxins can be diminished. Early cultivars produced less DON than late ones. In fusaria risk situations, as wheat after corn and with no tillage soil management systems, the use of most resistant varieties like Arina, Danis or Titlis is recommended.
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.